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Forum Discussion

smp_86112's avatar
smp_86112
Icon for Cirrostratus rankCirrostratus
Jan 08, 2009

Routing multiple VLANs to single LTM interface

Let me apologize up front if I mangle the terminology I'm about to use. This type of discussion does not fall within my area of expertise.     Up until now, we have been routing one VLAN to...
config
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dennypayne's avatar
dennypayne
Icon for Employee rankEmployee
Jan 08, 2009
I'm not sure exactly which scenario you're trying to support here, so I'll try to explain the procedures for both:

 

 

1. LTM is directly attached to VLAN 100 now and you want LTM to be directly attached to both VLAN 100 and VLAN 200

 

 

When you define the VLAN you set up the VLAN tag, so you'd have one with tag 100 and another with VLAN 200. Then you assign the same interface under both VLANs as a tagged interface (instead of untagged). The switch then needs to be configured as an 802.1q "trunk" (confusing to some because on an LTM a "trunk" is a 802.3ad aggregate interface).

 

 

However you will not be able to have the same self IP of 192.168.0.254 on both VLANs. The self IP's on each VLAN will need to be on separate networks.

 

 

2. LTM is forwarding traffic for VLAN 100 currently and you want it to forward both VLAN 100 and VLAN 200 traffic. (I don't think this is what you are asking but I'm a little confused when you say you are "routing" the VLAN to LTM)

 

 

Depending on how your forwarding virtual server is currently configured you may not need to do anything. If it's currently a wildcard virtual then just enabling it on the new VLAN should be sufficient.

 

 

Denny