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Cisco IOS-XE TACACS+ priority and load balance

bakaholic39
Level 1
Level 1

Hello!

I am curious if I'm configuring TACACS like this

tacacs-server host 192.168.10.11
tacacs-server host 192.168.10.12

Will it be load balanced?
Will it prioritize in order?

Thanks!

1 Accepted Solution

Accepted Solutions

M02@rt37
VIP
VIP

Hello @bakaholic39 

TACACS+ configuration on most devices does not inherently support load balancing in the sense of distributing requests evenly across multiple servers. The typical behavior is failover, not load balancing. Thus, the second server acts as a backup rather than sharing the load with the first server.

 

Best regards
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5 Replies 5

balaji.bandi
Hall of Fame
Hall of Fame
tacacs-server host 192.168.10.11
tacacs-server host 192.168.10.12

Will it prioritize in order?  - this is first one order, if that fails then second.

If you like to LB, then you need to use LoadBalancer.

BB

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Reza Sharifi
Hall of Fame
Hall of Fame

Hi,

Priority based. It will try .11, if not available, it will try .12

HTH

M02@rt37
VIP
VIP

Hello @bakaholic39 

TACACS+ configuration on most devices does not inherently support load balancing in the sense of distributing requests evenly across multiple servers. The typical behavior is failover, not load balancing. Thus, the second server acts as a backup rather than sharing the load with the first server.

 

Best regards
.ı|ı.ı|ı. If This Helps, Please Rate .ı|ı.ı|ı.

johnlloyd_13
Level 9
Level 9

hi,

just be mindful, in 'newer' IOS-XE these commands are no longer supported.

these are now configured under 'aaa group server'

aaa new-model
aaa group server tacacs+ <TACACS GROUP NAME>
 server-private <TACACS HOST IP 1> key <TACACS KEY>
 server-private <TACACS HOST IP 2> key <TACACS KEY>

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