topic Ha on different switch in Wireless

Ha on different switch

Augustgood — Sun, 04 Jul 2021 08:18:41 GMT

This is my environment, 2 wlc 5508 on HA (firmware 7.4.110.8), from on-line documentation i know that we can't configure HA on two different switch (with 2 different port-channel). But is it possibile ? and why no ? ha don't works.

Ha on different switch

Leo Laohoo — Fri, 22 Nov 2013 00:59:48 GMT

HA SSO requires that the Management and Redundant IP address of both appliance need to be in the same subnet.

Ha on different switch

Saurav Lodh — Fri, 22 Nov 2013 02:33:23 GMT

Moreover,It is highly recommended to have back-to-back direct physical connectivity between redundant ports!!

Ha on different switch

Stephen Rodriguez — Fri, 22 Nov 2013 03:14:56 GMT

Adding on to Leo's post:

you can have them be on different switches for the port channel, and that would be the recommended setup. that way if you lose one switch you don't lose all the WLC as well. But you do have to have the WLC in the same management subnet, and the RP port should be directly connected between the WLC, and not going through a switch.

HTH,
Steve

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Ha on different switch

Augustgood — Fri, 22 Nov 2013 08:41:26 GMT

the online documentation (and the experts of the forum "ask the expert") does not recommend configuring HA on different switch, i don't understand why ? i think of possible arp problem, can not run AP SSO .

i know same subnet, same location (<100 m) between redundant port (no through a switch).