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Beginner

High Availability box to box for cisco 4000 series

Hi ,

how can be configured high availability on a couple of cisco 4351 or 4451 serie router ?

 

someone can help me, send a config link

3 REPLIES 3
VIP Expert

Re: High Availability box to box for cisco 4000 series

Generally, for ISRs, high availability is obtained by having more than one with (ideally) an independent path to your destination. If your ISRs are the also the first hop (i.e. gateway), you can use a FHRP (e.g. HSRP). If they are a transit router, you would have routes that "know" a destination can be reached via either.
Beginner

Re: High Availability box to box for cisco 4000 series

local HA, we can use interchassis ha ?

 

 

VIP Expert

Re: High Availability box to box for cisco 4000 series

Yes. Without it, the best you might accomplish is using two different modules for links (hoping if one fails the other will not) and/or dual power supplies (if offered). The "box" itself, and the "CPU" are single points of failure.
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