Transparent Bridge...will it pass vlan traffic?

factory909 · 02-07-2018, 08:33 PM

I am in the process of setting up transparent bridge to set in between our main switch and firewall/router. We run 4 VLANs within our network that the firewall/router takes care of.

My question is, what happens when I stick this linux built bridge in between the switch and firewall/router? Will it shove the VLAN traffic on through? Or am I going to have to build subinterfaces for each VLAN?

ferrari · 02-08-2018, 02:23 AM

The answer might depend on whether VTP pruning is in use:
http://www.ciscopress.com/articles/a...02157&seqNum=3

Quote:

A switch operating in VTP transparent mode does not create VTP advertisements or synchronize its VLAN configuration with information received from other switches in the management domain. A switch in transparent mode forwards VTP advertisements received from other switches that are part of the same management domain. A switch configured in VTP transparent mode can create, delete, and modify VLANs, but the changes are not transmitted to other switches in the domain; they affect only the local switch. Table 3-1 offers a comparative overview of the three VTP modes.

My apologies in advance if I'm on the wrong track with this.

ferrari · 02-08-2018, 02:28 AM

This thread may also help answer your question (if I understood it right)
https://learningnetwork.cisco.com/thread/59363