Cisco Catalyst 9200 Switch Stacking

Categories Cisco, Switch

Things to know:

  • A switch stack can have up to eight stacking-capable switches connected through their StackWise ports.
  • Only homogenous stacking is supported -Catalyst 9200 switches will only allow other 9200s as stack members.
  • Switch members can’t have different licenses

Overview

  • up to eight stacking-capable switches connected through their StackWise ports
  • The stack as seen as one device across Layers 2 and 3.
  • Active switch controls the operation and managment of the entire stack.
  • The active switch contains the saved and running configuration files for the switch stack. The configuration files include the system-level settings for the switch stack and the interface-level settings for each stack member. Each stack member has a current copy of these files for back-up purposes.

Mac Address and Bridge ID (Layer 2)

  • Configuring MAC persistency so that the stack MAC address never changes to a different MAC address to avoid LACP and PAgP flaps/inconsistencies.
  • If the changes, the MAC address of the new determines the new bridge ID and router MAC address.
  • If the entire switch stack reloads, the switch stack uses the MAC address of the .

Upgrading Software

  • auto-upgrade and auto-advise features enable a switch with software packages that are incompatible with the switch stack to be upgraded to a compatible software version so that it can join the switch stack.

Priority

  • The switch with the higher priority becomes the stack master. This can be seen by using the show switch command and looking at the priority values. switch x priority x if switch 1 priority 15 and switch 2 priority 10 than switch 1 will be elected the master.

Adding a new member

  1. Power off the new switch.
  2. Connect the new switch to the stack using the StackWise cables.
  3. Power on the new switch.

Failure

  • If the stack master is removed or powered off the standby switch will become the new active switch. All other stack members in the stack remain as members and will not reboot.
  • If two devices become stack master one stack will have members the other stack master will show as a standalone device. Use the mode button and port LEDs on the device to identify which device is the master and which devices belong to that stack.

Configure ISE: BYOD Wireless Network

Categories Cisco, ISE, Wireless
  • Configure a native supplicant profile for wireless clients
  • Configure a BYOD Portal for onboarding
  • Create the authentication policy that allows users to log in
  • Configure authorization policy that permits access to resources
  • Configure ACLs on WLC

Users will connect to the BYOD WLAN.  If the mobile device does not have a certificate, the user will be prompted to enter their Active Directory Username and Password. Once they complete the onboarding process, ISE will initiate a Change of Authorization (CoA). This will disconnect the client and they will immediately re-associate to the WLAN using the new certificate.

Certificate Template

This is the certificate that clients will download when attempting to connect to the SSID “MGMT”.

  • Go to: Administration > System > Certificates > Certificate Authority > Certificate Templates
  • Select EAP_Authentication_Certificate_Template and Click Duplicate
  • Enter the name BYOD_EAP_Authentication_Certificate_Template
  • Edit the Organizational Unit and Organization
  • Set SCEP RA Profile to ISE Internal CA
  • Click Submit

Native Supplicant Profile

This is the wireless profile the device will use to connect to the WLAN once the device is onboarded.

  • Go to: Policy > Policy Element > Results > Client Provisioning > Resources
  • Click Add > Native Supplicant Profile
  • Enter a Name (BYOD_EAP_TLS_NSP)
  • Click Add under Wireless Profile
  • Enter the SSID
  • Set Security to WPA2 Enterprise
  • Set Allowed Protocol to TLS
  • Set Certificate Template to BYOD_EAP_Authentication_Certificate_Template
  • Click Submit

Client Provisioning Policy

  • This determines which Native Supplicant Profile gets installed on which type of device.
  • Policy > Client Provisioning
  • Edit each type of device with the Native Supplicant Profile that you created earlier
  • (Set Results to BYOD_EAP_TLS_NSP)
  • Click Save

BYOD Portal

  • This is the web page the user is redirected to in order to “onboard” their device.
  • Administration > Device Portal Management > BYOD
  • Click Create
  • Enter a Portal Name (BYOD WEB PAGE)
  • Use the default settings.

CA for External Identity Sources

  • Administration > Identity Management > External Identity Sources > Certificate Authentication Profile
  • Click Add
  • Enter a Name (Ge_Cert_CommonName)
  • Set Use Identity from “Subject – Common Name”
  • Click Save

Active Directory External Identity Source

  • Administration > Identity Management > External Identity Sources > Active Directory
  • Click Add
  • Enter the Join Point Name (For instance, wifiworkshop_AD)
  • Enter the Active Directory Domain
  • Click Submit
  • Once the Join Point is created, Click the Groups Tab
  • Add AD Groups of users who will be allowed to onboard their device.

Authentication Policy

  • Policy > Policy Sets > Wireless Devices
  • Create an Authentication Policy above the default rule
  • Set the Condition to Radius:Called-Station-ID contains Mgmt
  • Set the Allowed Protocols to Default Network Access
  • Set Network Access:AuthenticationMethod EQUALS x509_PKI to use “Ge_Cert_CommonName”
  • Click the drop-down arrow next to Actions and Insert Row Above the Default Rule
  • Set Network Access:AuthenticationMethod EQUALS MSCHAPv2 to use “Ge”
  • Set the Default Rule to Deny Access

Authorization Profile

  • Work Centers > BYOD > Policy Elements > Results > Authorization Profiles
  • Click Add
  • Enter a Name (BYOD_NSP_AuthZ_Profile)
  • Select Web Redirection (CWA, MDM, NSP, CPP)
  • Set it to Native Supplicant Provisioning
  • Create an ACL named BYOD_REDIRECT
  • Set the Value BYOD WEB PAGE

Authorization Profile for Android Devices

  • Work Centers > BYOD > Policy Elements > Results > Authorization Profiles
  • Click Add
  • Enter a Name (BYOD_NSP_Google_AuthZ_Profile)
  • Select Web Redirection (CWA, MDM, NSP, CPP)
  • Set it to Native Supplicant Provisioning
  • Manually type in BYOD_Google_REDIRECT for the ACL
  • (You’ll create the ACL on the WLC later)
  • Set the Value BYOD WEB PAGE

Authorization Policy for Android Devices

  • Work Centers > BYOD > Policy Sets
  • Create a new Authorization Policy Rule above the default rule
  • Set the Condition to Network Access:Authentication Method EQUALS MSCHAPV2 AND Session:Device-OS EQUALS Android
  • Set Permissions to BYOD_NSP_Google_AuthZ_Profile

Authorization Policy for all other devices

  • Work Centers > BYOD > Policy Sets
  • Create a new Authorization Policy Rule above the default rule
  • Set the Condition to Network Access:Authentication Method EQUALS MSCHAPV2
  • Set Permissions to Ge_NSP_AuthZ_Profile

Add the ACL to the WLC

  • Deny statements in the ACL trigger the redirect on WLC. Create permit statements to allow traffic to the Policy Service Nodes and DNS (not redirected). Create a rule for each direction. Create deny statements for web traffic, so that they get redirected to the BYOD Portal
  • Log into the WLC
  • Security > Access Control Lists > Access Control Lists
  • Click New
  • Name it BYOD_DIRECT (or whatever you manually named the ACL in the Authorization Rule)
  • Click on the BYOD_DIRECT acl and click Add New Rule
  • Create Rule to permit traffic all traffic outbound from controller
  • Create Rule to permit TCP traffic on 8443 to all Policy Service Nodes
  • Create Rule to permit UDP traffic to DNS
  • Create Rule to permit UDP traffic to DHCP  (I believe DHCP is allowed by default, so you may not need this rule.)
  • Deny all other traffic (to be redirected)
  • Save Configuration

Border Gateway Protocol (BGP) – Peer Relationships

Categories Cisco, Route
  • iBGP Split Horizon – When an iBGP speaker learns of an iBGP Prefix it will not send the prefix to another iBGP speaker.
  • This means you will need to configure either a full mesh of iBGP peerings or use a function like route reflection or confederation to work around this rule.
  • eBGP Peering – Peering between different Autonymous Systems.
  • eBGP multi-hop – Used whenever you want to peer between loopback addresses between eBGP peers.

eBGP Multi-hop Lab

  • Configure the BGP topology given in the diagram.
  • All peering should be formed between loopback addresses.
  • Do not form an iBGP peering between R2 and R3.
  • Allowed to create static routes in AS 400 and AS 500 if needed.

ESXi VM Backup On Synology NAS

Categories ESXi, NAS

Preparation

  • From the Synology Package Center we will download “Active Backup for Business”.

Create a backup of the VMs

  • Open the Active Backup for Business.
  • Activate the application using your Synology account. (This is free)
  • Click the “VMware vSphere” tab and click “Manage Hypervisor” to add your ESXi host.
  • As long as the input is correct you will immediately see your ESXi host added.

Backup Task

  • Select Create Task and give it a name.
  • Select the backup destination directory.
  • Run through the settings, select the VMs to backup.
  • Give specifics on backup parameters.
  • I’m just clicking through the assistant, keeping the default options selected.
  • Check the task summary to review if everything is as you like to configure it. If all is fine, click “Apply”.
  • Run the backup task and once completed you will see it under the “Task List” section.

Troubleshooting: C9200L-48P-4X Fuji code Locked Up

Categories Cisco, Switch
  • A C9200L had locked up. All switchports were dead/no light and the Fiber modules were a solid amber lit color. All ports had hosts on the other end that were still alive and sending electrical signal to their ports. I attempted to power cycle by pulling the power cables and reseating the redundant power supplies. After two attempts the switch was still locked up with fans staying on high after POST should have cleared.

Troubleshooting Information

  • Do any lights at all illuminate? I see the switchports don’t, but is any activity seen on the front panel?
    Sfp ports stayed solid amber – switchports none lit, no activity when reseating connections
  • Do the PSUs appear to power on?
    Yes both PSUs appear to power on, switch fans kick on during POST and stay on full speed
  • Has the device ever powered on?
    Yes device was pulled from production
  • What version of code was running (if known/applicable)?
    Fuji – 16.9.4

While attempting to swap the 9200L with a loaner switch I ran into the following warning messages. NOTE: The fiber and SFP modules were being reseated into different members of the stack until the RMA could come in.

No Big Deal

  • I had never ran into the Duplicate GBIC error before. While attempting to do some research on this I ran into bug reports of this occuring on 3850s.

Solution/Work Around

  • Remove the old switch member
  • no errdisable detect cause gbic-invalid
  • reseat connections
  • admin shut/no shut the module ports.




  • I figured that removing the stack member, reseating the connections would be enough but for some reason the ports were still errdisabled.
  • I had to shut/no shut the ports twice after reseating each connection. Once I did this the ports moved out of errdisable.
 SWITCH-NAME(config)#
 *Feb 24 15:00:25.568: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/2 removed
 SWITCH-NAME(config)#
 *Feb 24 15:00:54.982: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2
 SWITCH-NAME(config)#
 *Feb 24 15:02:52.913: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/3 removed
 SWITCH-NAME(config)#
 *Feb 24 15:04:47.672: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/3
 SWITCH-NAME(config)#Warning: [1 51] is dup of [3 50]
 SWITCH-NAME(config)#end
 SWITCH-NAME#sh logg
 Syslog logging: enabled (0 messages dropped, 7 messages rate-limited, 0 flushes, 0 overruns, xml disabled, filtering disabled)
 No Active Message Discriminator.
 No Inactive Message Discriminator.
 Console logging: level emergencies, 0 messages logged, xml disabled,                  filtering disabled Monitor logging: level debugging, 173 messages logged, xml disabled,                  filtering disabled     Logging to: vty2(7) Buffer logging:  level debugging, 46694 messages logged, xml disabled,                 filtering disabled Exception Logging: size (4096 bytes) Count and timestamp logging messages: disabled File logging: disabled Persistent logging: disabled
 No active filter modules.
 Trap logging: level informational, 46254 message lines logged     Logging Source-Interface:       VRF Name:
 Log Buffer (4096 bytes):
  port Gi1/0/26 and port Gi1/0/25
 *Feb 24 14:25:45.184: %SYS-6-LOGOUT: User pete has exited tty session 2(10.10.16.40)
 *Feb 24 14:46:24.069: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te2/1/2Warning: [2 50] is dup of [3 52]
 *Feb 24 14:46:24.069: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te2/1/2, putting Te2/1/2 in err-disable state
 *Feb 24 14:46:49.152: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:46:50.168: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:46:58.360: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/1Warning: [1 49] is dup of [3 49]
 SWITCH-NAME#ter le 0
 SWITCH-NAME#sh logg
 *Feb 24 14:51:02.833: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/1Warning: [1 49] is dup of [3 49]
 *Feb 24 14:51:48.227: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2Warning: [1 50] is dup of [3 51]
 *Feb 24 14:51:48.227: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te1/1/2, putting Te1/1/2 in err-disable state
 *Feb 24 14:52:18.181: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/2 removed
 *Feb 24 14:52:38.420: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2Warning: [1 50] is dup of [3 51]
 *Feb 24 14:53:07.578: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/3Warning: [1 51] is dup of [3 50]
 *Feb 24 14:53:07.578: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te1/1/3, putting Te1/1/3 in err-disable state
 SWITCH-NAME#conf t
 Enter configuration commands, one per line.  End with CNTL/Z.
 SWITCH-NAME(config)#no errdisable detect cause gbic-invalid
 SWITCH-NAME(config)#exi
 SWITCH-NAME#
 *Feb 24 15:12:05.166: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te2/1/2 removed
 SWITCH-NAME#
 *Feb 24 15:12:32.313: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te2/1/2
 SWITCH-NAME#Warning: [2 50] is dup of [3 52]
 SWITCH-NAME#sh logg
 *Feb 24 14:46:24.069: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te2/1/2Warning: [2 50] is dup of [3 52]
 *Feb 24 14:46:24.069: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te2/1/2, putting Te2/1/2 in err-disable state
 *Feb 24 14:46:49.152: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:46:50.168: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:46:58.360: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/1Warning: [1 49] is dup of [3 49]
 *Feb 24 14:46:58.360: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te1/1/1, putting Te1/1/1 in err-disable state
 *Feb 24 14:47:00.408: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:47:02.420: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:28.930: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:29.942: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:32.982: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:35.463: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:38.714: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:39.922: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/1 removed
 *Feb 24 14:50:40.721: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:52.774: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:53.788: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:56.717: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:58.729: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:51:02.833: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/1Warning: [1 49] is dup of [3 49]
 *Feb 24 14:51:48.227: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2Warning: [1 50] is dup of [3 51]
 *Feb 24 14:51:48.227: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te1/1/2, putting Te1/1/2 in err-disable state
 *Feb 24 14:52:18.181: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/2 removed
 *Feb 24 14:52:38.420: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2Warning: [1 50] is dup of [3 51]
 *Feb 24 14:53:07.578: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/3Warning: [1 51] is dup of [3 50]
 *Feb 24 14:53:07.578: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te1/1/3, putting Te1/1/3 in err-disable state
 *Feb 24 14:56:02.489: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: pete] [Source: 192.168.1.5] [localport: 23] at 14:56:02 UTC Wed Feb 24 2021
 *Feb 24 15:00:25.568: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/2 removed
 *Feb 24 15:00:54.982: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2
 *Feb 24 15:02:52.913: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/3 removed
 *Feb 24 15:04:47.672: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/3Warning: [1 51] is dup of [3 50]
 *Feb 24 15:06:07.071: %SYS-5-CONFIG_I: Configured from console by pete on vty0 (192.168.1.5)
 *Feb 24 15:11:22.731: %SYS-5-CONFIG_I: Configured from console by pete on vty0 (192.168.1.5)
 *Feb 24 15:12:05.166: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te2/1/2 removed
 *Feb 24 15:12:32.313: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te2/1/2Warning: [2 50] is dup of [3 52]
 SWITCH-NAME#
 *Feb 24 15:14:09.249: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/2 removed
 SWITCH-NAME#
 *Feb 24 15:14:16.391: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2
 SWITCH-NAME#Warning: [1 50] is dup of [3 51]
 SWITCH-NAME#show sw
 SWITCH-NAME#show switch
 Switch/Stack Mac Address : 10b3.d582.9880 - Local Mac Address
 Mac persistency wait time: Indefinite
                                              H/W   Current
 Switch#   Role    Mac Address     Priority Version  State
 1       Standby  4c71.0d81.xxxx     1      V01     Ready
  2       Member   7c21.0e62.xxxx     1      V01     Ready
  3       Member   0000.0000.xxxx     0      V01     Removed
 *4       Active   10b3.d582.xxxx     1      V01     Ready
 SWITCH-NAME#conf t
 Enter configuration commands, one per line.  End with CNTL/Z.
 SWITCH-NAME(config)#no switch 3 provision
 SWITCH-NAME(config)#
 *Feb 24 15:19:14.899: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/1 removed
 SWITCH-NAME(config)#
 *Feb 24 15:19:24.716: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/1
 SWITCH-NAME(config)#Warning: [1 49] is dup of [3 49]
 SWITCH-NAME(config)#int ra te 1/1/1 - 2
 SWITCH-NAME(config-if-range)#no shut
 SWITCH-NAME(config-if-range)#do sh logg
 Syslog logging: enabled (0 messages dropped, 7 messages rate-limited, 0 flushes, 0 overruns, xml disabled, filtering disabled)
 No Active Message Discriminator.
 No Inactive Message Discriminator.
 Console logging: level emergencies, 0 messages logged, xml disabled,                  filtering disabled Monitor logging: level debugging, 183 messages logged, xml disabled,                  filtering disabled     Logging to: vty2(17) Buffer logging:  level debugging, 46704 messages logged, xml disabled,                 filtering disabled Exception Logging: size (4096 bytes) Count and timestamp logging messages: disabled File logging: disabled Persistent logging: disabled
 No active filter modules.
 Trap logging: level informational, 46261 message lines logged     Logging Source-Interface:       VRF Name:
 Log Buffer (4096 bytes):
 PDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:46:50.168: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:46:58.360: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/1Warning: [1 49] is dup of [3 49]
 *Feb 24 14:46:58.360: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te1/1/1, putting Te1/1/1 in err-disable state
 *Feb 24 14:47:00.408: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:47:02.420: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:28.930: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:29.942: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:32.982: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:35.463: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:38.714: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:39.922: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/1 removed
 *Feb 24 14:50:40.721: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:52.774: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:53.788: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to down
 *Feb 24 14:50:56.717: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:50:58.729: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/42, changed state to up
 *Feb 24 14:51:02.833: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/1Warning: [1 49] is dup of [3 49]
 *Feb 24 14:51:48.227: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2Warning: [1 50] is dup of [3 51]
 *Feb 24 14:51:48.227: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te1/1/2, putting Te1/1/2 in err-disable state
 *Feb 24 14:52:18.181: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/2 removed
 *Feb 24 14:52:38.420: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2Warning: [1 50] is dup of [3 51]
 *Feb 24 14:53:07.578: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/3Warning: [1 51] is dup of [3 50]
 *Feb 24 14:53:07.578: %PM-4-ERR_DISABLE: gbic-invalid error detected on Te1/1/3, putting Te1/1/3 in err-disable state
 *Feb 24 14:56:02.489: %SEC_LOGIN-5-LOGIN_SUCCESS: Login Success [user: pete] [Source: 192.168.1.5] [localport: 23] at 14:56:02 UTC Wed Feb 24 2021
 *Feb 24 15:00:25.568: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/2 removed
 *Feb 24 15:00:54.982: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2
 *Feb 24 15:02:52.913: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/3 removed
 *Feb 24 15:04:47.672: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/3Warning: [1 51] is dup of [3 50]
 *Feb 24 15:06:07.071: %SYS-5-CONFIG_I: Configured from console by pete on vty0 (192.168.1.5)
 *Feb 24 15:11:22.731: %SYS-5-CONFIG_I: Configured from console by pete on vty0 (192.168.1.5)
 *Feb 24 15:12:05.166: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te2/1/2 removed
 *Feb 24 15:12:32.313: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te2/1/2Warning: [2 50] is dup of [3 52]
 *Feb 24 15:14:09.249: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/2 removed
 *Feb 24 15:14:16.391: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/2Warning: [1 50] is dup of [3 51]
 *Feb 24 15:19:14.899: %PLATFORM_PM-6-MODULE_REMOVED: SFP module with interface name Te1/1/1 removed
 *Feb 24 15:19:24.716: %PLATFORM_PM-6-MODULE_INSERTED: SFP module inserted with interface name Te1/1/1Warning: [1 49] is dup of [3 49]
 SWITCH-NAME(config-if-range)#do sh clock
 *15:33:51.262 UTC Wed Feb 24 2021
 SWITCH-NAME(config-if-range)#shut
 SWITCH-NAME(config-if-range)#no shut
 SWITCH-NAME(config-if-range)#
 *Feb 24 15:34:28.246: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/1/1, changed state to up
 *Feb 24 15:34:28.259: %LINK-3-UPDOWN: Interface TenGigabitEthernet1/1/2, changed state to up
 SWITCH-NAME(config-if-range)#
 *Feb 24 15:34:31.578: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/1, changed state to up
 *Feb 24 15:34:31.757: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/2, changed state to up
 SWITCH-NAME(config-if-range)#exi
 SWITCH-NAME(config)#int te 2/1/2
 SWITCH-NAME(config-if)#shut
 SWITCH-NAME(config-if)#no shut
 SWITCH-NAME(config-if)#
 *Feb 24 15:34:54.208: %LINK-3-UPDOWN: Interface TenGigabitEthernet2/1/2, changed state to up
 SWITCH-NAME(config-if)#
 *Feb 24 15:34:57.425: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet2/1/2, changed state to up
 

Firepower Threat Defense – Interfaces and Zones

Categories Cisco, fmc
  • FTD is a true zone based firewall.
  • Security zones are collections of interfaces or sub-interfaces.
  • Policy rules can apply to source and/or destination zones.
  • This is NOT an ASA – We do NOT use security levels.

Interface Types

  • Management Interface
  • Diagnostic Interface
  • Physical Interface
  • Etherchannel
  • Redundant
  • Routed
  • Bridged

WAN/Outside

  • Our WAN/Outside will be our untrusted traffic.
  • We will use DHCP to get an IP address leased from the internet service provider.

LAN/Inside

  • Our LAN interface will be for our internal (inside) traffic.
  • We will use a static IP address and this port will be a routed interface that is connected to a routed port on our Cisco switch.
  • You can have different designs and use sub interfaces with dot1q trunking but I prefer to use as much layer 3 that I can.

Routing

  • We are using OSPF for our routing protocol.
  • We will advertise all of our inside networks and keep everything in the backbone.
  • We are going to be a normal router, we don’t need stub or not-so-stubby – we are an internal router.
  • We don’t need to worry about range or virtual links.

Firepower Threat Defense – Logical Objects

Categories Cisco, fmc

Network Address Objects

  • A network object represents one or more IP addresses. Network objects are used in various places, including access control policies, network variables, intrusion rules, identity rules, network discovery rules, event searches, reports, and so on.
  • It is a good idea to create objects for each VLAN
  • If possible creating objects for individual devices may be required.
  • It is a good idea to be as granular as possible because this will allow for flexibility and scalability to your rules offering more insights on what is happening within your network.
  • After the individual objects are created we will create a network group object that will encompass all of our internal network.
  • This group object will be used throughout our policy creation.

Ports

  • Port objects or groups represent different protocols. You can use port objects and groups in various places in the systems web interface, including access control policies, identity rules, network discovery rules, port variables, and event searches.
  • Just like our network objects we can create layer4 tcp/udp objects that will be used in the same manner.
  • You can also add service ports in the ACP when creating access control policies but they will not have a descriptive name.

Interfaces and Zones

  • Interface objects segment your network to help you manage and classify traffic flow. An interface object simply groups interfaces. These groups may span multiple devices; you can also configure multiple interface objects on a single device.
  • FTD is a zone based system creating security zones allows for easier management.

Application Filter

  • Application filters help you perform application control by organizing applications according to basic characteristics: type, risk, business relevance, category, and tags.
  • This can be used as a way to block web sites if you don’t have a license for URL filtering (This feature is included with the base license.
  • Add the selected filters.
  • You can choose the applications you want selected if you don’t want to choose all.
  • Add to Rule.
  • Save the new application filter.

Variable Sets

  • Variables represent values commonly used in intrusion rules to identify source and destination IP addresses and ports.You can also use variables in intrusion policies to represent IP addresses in rule suppressions, adaptive profile updates, and dynamic rule states.
  • Now we will edit our HOME_NET variable from ‘any’ to our network group object we created earlier.
  • This will help give a better insight and more security.
  • Update the new group object into the Included Networks list to remove the ‘any’ object.
  • After saving the new object we can see it has been applied and our new variable set has been created.

FMC Health Policies and Alerts

Categories Cisco, fmc
  • Health policies and alerts are an important part of managing devices.
  • At the top right corner of FMC we can see that their is currently an alert which is being generated because I am using a demo license.
  • The FMC is making a ‘call’ every 5 minutes and Cisco is replying that I’m not worthy!
  • Let’s disable that since this is a lab environment and you would not want to do this for production but I’m annoyed with seeing red.
  • The monitor gives us a break down of the health monitors that are hitting counters.

Health Policies

  • Now we go into the policy section of the health tab and create a new policy.
  • This policy will be applied to our FTD and FMC.
  • Disable the Smart licensing status monitor by selecting off and then saving the configuration.

SNMP Alert

  • Next we will continue to create our Syslog and SNMP alerts.

Syslog Alerts

That’s All Folks!

  • The SNMP/SYSLOG alerts should now be live once we have selected all modules we want, the severity at which they are defined and the alerts we choose.

Firepower Management Console System Configuration

Categories Cisco, fmc, Security

Syslog

  • Setting up a syslog server prevents allowing another user on the FMC to delete the logs. This also keeps a backup of your logs.
  • Set the ‘send audit to syslog’ as enabled
  • enter in the sys log serves IP address for the host.
  • Change the faility to SYSLOG
  • Set severity to what you would like.
  • Test the syslog server and then Save once verified it’s working.
  • You will be greeted with a Sucess message after the configuration change has took affect.

Login Banner

  • Create a login banner with whatever login greeting you would like.
  • It is a good idea to display an authorization warning for the login banner or any message you would like users to see once logged into the FMC.
  • Save the login banner once completed.

Change Reconciliation

  • Change reconciliation allows a reported to be generated every x hours:minutes to provide a history of what configurations have changed.

Email Notification

  • Enter in your information as needed.
  • The from address can be whatever you like all other information will need to be legitimate

HTTPS Server Certificate

  • Creating an HTTPS certificate.

Management Interfaces

  • Hostname of the device
  • Domain name the device is in.
  • DNS servers
  • Remote management port
  • Don’t forget to hit save!

Remote Storage Device

SNMP

  • Setup snmpv2
  • Create an ACL pointing to ISE or whatever you’re using for SNMP.

vWLC with Hotspot Guest Access using ISE 2.7

Categories Cisco, ISE
  • Hotspots are a portal where users can access an open SSID. Generally, they will need to accept an Acceptable Use Policy before being granted access to the internet. You can have different scenarios than just this lab scenario.
  • Log into the vWLC. Click the security tab at the top.
  • Click the New button to add a new AAA server.
  • Enter the IP address of the ISE server, port number is 1812, and that Support for COA is checked. *** Change of Authorization is a feature that allows a RADIUS server to adjust an active client session. ***
  • Create a Shared Secret and make note of it as ISE will need to be configured with the same secret. Click Apply.
  • Next click Accounting from the Security/AAA menu on the left. Hit New and enter the required information.
  • Next we will log into ISE and configure the WLC as a network device
  • Go to Work Centers, then Network Resources.
  • Click Add and fill out the WLC information. Check Radius Auth. Settings and be sure to fill out the Shared Secret we filled out earlier in the WLC.
  • After you save the network device you can verify it has been added by checking the Network Devices section.

Configuring the Guest SSID

  • Log into your WLC and click the WLANs tab. Choose Create New from the drop down box and click Go.
  • Enter a profile name and SSID.

Select Status Enabled, and the correct interface for your guest traffic. *** NOTE: My screen shot doesn’t show the Guest SSID as being enabled ***

  • Next click the Security tab.
  • Change Layer 2 Security to None, and check MAC Filtering.
  • Click AAA Servers, and change the Authentication and Authorization servers to the ISE server via the drop down boxes.
  • Click the Advanced tab.
  • Check Allow AAA Override.
  • Under NAC change the drop down to ISE NAC.
  • Uncheck Flex Connect Local Switching if enabled.
  • Check DHCP/HTTP profiling under Radius Client Profiling.
  • Next we have to create a few ACLs. One for Web Auth Redirect that will allow DNS and traffic to ISE and another ACL for restricting guest access.
  • You can verify your ACLs have been added to the vWLC from the Access control list section.

ISE Policies

Our policy goals will be:

  • redirect users who connect to the Guest network to a web portal.
  • Once the AUP has been accepted they will get a new policy applied to them restricting their access to internet only via the ACL we created earlier.
  • Log in to ISE. Go to Work CentersGuest Access, Policy Elements.
  • Click Results and and go to Authorization Profiles.
  • Click Add to create a new profile.
  • Give the policy a descriptive name and description.
  • Scroll down to the Common Tasks and check Web Redirection.
  • Select Hotspot from the drop down.
  • Enter WEB_AUTH_REDIRECT as the ACL and the value will be the Hotspot guest portal.
  • Click Submit.
  • Click Add again, enter a new name and description. This policy will apply the guest restriction ACL we created on the WLC.
  • Scroll down into the Common Tasks and find Airespace ACL, enter the name Guest_ACL
  • Click Submit.
  • Now, go to Work CentersGuest AccessPolicy Sets.
  • Create a new policy set
  • Add a new profile above the one we just created
  • This will be for applying the Guest ACL for the user once going through the portal. Conditions will be Wireless_MABIdentityGroup = GuestEndpoints, and Guest_Flow. Result will be the Guest_Access policy we created which applies the ACL we created on the WLC.
  • Lastly, use whatever wireless device to verify you can connect to the new SSID.
  • Save all configurations and backup if needed.