strange issue on 9800-L SSO via L2 RP port

[atifali.zaidi1]

hi folks

facing a strange issue on the two 9800-L's that i have , please check the below output .running 17.3.3 on both the controllers, but the HA has some issues.  the one with the lower priority has the ap's , the other one which has higher priority does not have.

#show chassis
Chassis/Stack Mac Address : xxxxxxxxxxxxxxxx - Local Mac Address
Mac persistency wait time: Indefinite
Local Redundancy Port Type: Twisted Pair
H/W Current
Chassis# Role Mac Address Priority Version State IP
------------------------------------------------------------------------------------- <<<<<<<<<<<< has all the ap's
*2 Active xxxxxxxxxxxx 1 V02 Ready xxxxxxxxxx

#show chassis
Chassis/Stack Mac Address : xxxxxxxxxx - Local Mac Address
Mac persistency wait time: Indefinite
Local Redundancy Port Type: Twisted Pair
H/W Current
Chassis# Role Mac Address Priority Version State IP
-------------------------------------------------------------------------------------
*1 Active xxxxxxxxxxxxxx 2 V02 Ready xxxxxxxxxxxx
2 Member 0000.0000.0000 0 V02 Removed xxxxxxxxxxxx

[atifali.zaidi1]

here's the topology 

wlc 1 ----- switch (server room 1) ---------Layer 2 RP -----------  switch (server room 2) -------- wlc 2

i can access the other wlc via the redundancy management IP address

[Rasika Nayanajith]

when you issue "show redundancy" or "show redundancy state" if you cannot see units are in SSO hot/standby status, then there is an issue with your setup.

I would go through below deployment guide and see if you have configured it correctly

https://www.cisco.com/c/dam/en/us/td/docs/wireless/controller/9800/17-1/deployment-guide/c9800-ha-sso-deployment-guide-rel-17-1.pdf 

HTH

Rasika

*** Pls rate all useful responses ***

[atifali.zaidi1]

hi there, i have tried removing the HA config on the secondary and put it back again, i reloaded the secondary unit as well. still it comes up as individual unit and does not pair up with the active unit, please see below mentioned outputs from secondary unit.

the secondary unit is connected to the second core switch, and i have also checked the RP port status , it is UP and also has the correct RP layer 2 vlan config . what is wrong ?

#show redundancy
Redundant System Information :
------------------------------
Available system uptime = 2 days, 15 hours, 7 minutes
Switchovers system experienced = 0
Standby failures = 0
Last switchover reason = none

Hardware Mode = Simplex
Configured Redundancy Mode = sso
Operating Redundancy Mode = Non-redundant
Maintenance Mode = Disabled
Communications = Down Reason: Failure

Current Processor Information :
-------------------------------
Active Location = slot 2
Current Software state = ACTIVE
Uptime in current state = 2 days, 15 hours, 7 minutes
Image Version = Cisco IOS Software [Amsterdam], C9800 Software (C9800_IOSXE-K9), Version 17.3.3, RELEASE SOFTWARE (fc7)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2021 by Cisco Systems, Inc.
Compiled Thu 04-Mar-21 12:37 by mcpre
BOOT = bootflash:packages.conf,12;
CONFIG_FILE =
Configuration register = 0x102
Recovery mode = Not Applicable

Peer (slot: 0) information is not available because it is in 'DISABLED' state

#show chassis
Chassis/Stack Mac Address : xxxx.xxxx.xxxx - Local Mac Address
Mac persistency wait time: Indefinite
Local Redundancy Port Type: Twisted Pair
H/W Current
Chassis# Role Mac Address Priority Version State IP
-------------------------------------------------------------------------------------
*2 Active xxxx.xxxx.xxxx 1 V02 Ready x.x.x.x

[marce1000]

-  Review the 9800-L   (HA) configuration with the CLI command : show  tech wireless , have the output analyzed by  https://cway.cisco.com/tools/WirelessAnalyzer/  , please note do not use classical show tech-support (short version) , use the command denoted in green for Wireless Analyzer

 M.