Can we have two different external VLANS on Active/Active Scenario

So you're looking to have multiple traffic groups (2) running on two differnt external vlans? Sure, but assuming that you're wanting them to back eachother for those traffic groups, they'll need to be built on built out that way. It's all just a matter of how you split things up between the traffic groups.

 

Unit 1 (Active )

 

• External VLAN 10 (Active TG1)
• External VLAN 20 (Standby TG2)

Unit 2 (Active )

 

• External VLAN 20 (Active TG2)
• External VLAN 10 (Standby TG1)

I believe the setup would more closely resemble:

 

Unit 1 (Active )

 

External VLAN 10 (Active TG1) Internal VLAN 30 (Standby TG2)

 

Unit 2 (Active )

 

External VLAN 20 (Active TG2) Internal VLAN 30 (Standby TG1)

 

It may work, but there could be problems. If for example, Vlan 10 were enabled on a VIP on Unit 1, when the object syncs to Unit 2, there's going to be an error because VLAN 10 doesn't exist there. It seemss better to have complete layer 2 parity.

 

Kevin

 

I'd actually recommend putting both Traffic Groups on the same vlan, both for internal and external. Traffic Groups are ultimately pinned to IP addresses or Partitions so there's often no benefit to trying to pin them to vlans. It would just add more work both on the LTM and also the switch.

 

The only scenario I can see where it would be useful is if you're not running BGP and have different IP blocks dependent on different ISPs. Then there would be some kind of DNS management system like a GTM doing round-robin on both IP addresses.