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teguh_wilidarma's avatar
teguh_wilidarma
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Sep 27, 2012

Implementing Link Controller in WAN Point to Point network - OSPF, iRule, and IP Forwarding VS question -

Dear All,

 

we are currently deploying F5 LC 1600 for WAN enhancement in two sites, namely site A and site B.

 

Please see attached simplified diagram.

 

What we are trying to achieve is to have F5 load balances the connection from site A to site B and vice versa through each site's gateways (there are two gateways in each site).

 

The condition is :

 

a. previously no LC is implemented, site A and site B communicates using OSPF routing. It provides failover, but no link load balance. The company purchase F5 LC to enable them to use both links better.

 

b. There are numerous Qos related command in their gateway routers which matches with certain IP address from respective LAN's workstations. The objective is to prioritize voice and video traffic over other traffic.

 

My question is:

 

a. Am I seeing a working design here? my experience is only with Internet facing LC, not WAN type.

 

b. I am attempting to implement OSPF in LC in order to keep every subnets known to each other, creating two IP Forwarding virtual server (for incoming and outgoing traffic) - basically instructing LC to look at its routing table, and create iRule so it can override the gateway address by the pool member. Is that even possible? Can I implement iRule on IP Forwarding type VS? Is there any simpler workaround?

 

c. To keep Qos command in the gateway router, will there be any impact in route path if I uncheck the SNAT box? If SNAT is enabled, many of Qos commands will have to be edited to now match the IP address of the LC. I am trying to avoid this.

 

Thanks a lot for all your attention and answer.

 

Regards

 

Teguh

 

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