Regarding Auto switch of WAN links

[ncnaveen_arasu]

Hi Team,

If we have two routers A & B with both interconnected via LAN ports. these routers will be my WAN routers.

If router A Bandwidth exceeds 50% it should switch over to Router B, if Router A BW drops belwo 50% again it has to switch back to Router A.

Whether its possible to do the same in routers.

We do not need Active-Active, or Active standby config as we do in redundant protocols.

Please guide.

Thanks

Naveen

[paul driver]

Hello

Performance edge routing ( PER/OER) is a possible solution

This can monitor the wan links and advertise a preferred path based on the BW utilisation

res
Paul

[Joseph W. Doherty]

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Posting

Might be doable with EEM script.

As Paul has already suggested, PfR might be a better approach, although I'm unsure it can be configured to flip all traffic between routers based on bandwidth loading.  (Yours is a bit of an unusual request.)

[paul driver]

Hello Joseph,

My thinking was to inject a default route of some kind to push the traffic out of the desired wan link based on the PER monitoring?

@Naveen
Maybe if you can provide a topology I could try and lab this for you for testing purposes?

res

Paul
 

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Well if you're using PfR, you let it control route inject, and default, I don't recall, being one it injects for you.

Then there's also the question of inbound traffic, i.e. does that too need to be redirected?