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Adel_N_114257's avatar
Adel_N_114257
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Oct 28, 2013

Deploying LTM and integrating with BGP

Hi all

 

I have a client who has 2x LTM. They want to deploy one per DC. I have two concerns:

 

One: the hearthbeat that indicates and facilitate the failover is communicated over layer 2; does this mean that the two LTMs cannot sync configs and be deployed in a HA active/passive scenario?

 

Two: if a backend server goes down in DC one, can the LTM route the traffic to the mirror server is DC2? I guess this links into the first question in terms of the two devices having visibility of what the other one is doing?

 

The easy option is for the client to buy 2x advanced routing license and 2x GTM add-on but I am curious to know if there is a work around i.e. not buying any additional software licenses or just buying the advanced routing license.

 

Any help you can offer to assist with this deployment would be greatly apprecaited.

 

BR

 

Adel

 

availability
bgp
deployment
f5 big-ip ltm
TMSH

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  • Adel_N_114257's avatar
    Adel_N_114257
    Icon for Nimbostratus rankNimbostratus
    Oct 28, 2013

    additionaly after reading all articles on dev central and askF5 and Cisco website, I found the below to be the most useful:

     

    https://devcentral.f5.com/questions/ltm-with-bgp-and-not-working-snat https://devcentral.f5.com/questions/ltm-with-bgp-route-advertisement

     

    Do I simply SNAT the traffic to introduce the redundancy? If so that takes care of the second issue but the issue about ConfigSync and HA pairing remains.

     

    Probably worth letting you know that I am somewhat of a newb to both Cisco and F5.

     

    again thanks for any helop that you can offer.