Bridge-groups VS VLANs

Hey guys,

I was wondering if someone can help clarify the fundamental difference between bridge-groups and vlans.

They both seem to support virtual interfaces, and you can apply interfaces to each one as well as STP support.

I do see that you can apply the BVI1 interface to a vlan which I am curious about. I configured BVI and bridge-groups on my 1811 router but I don't think I fully understand exactly what's going on here.

So I'm hoping another "human" might be able to provide the right interpretation that will click for me. I've read Cisco's docs and they are so dry I feel like a robot reading them...

Thanks!

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Comments

kalebksp

A bridge group allows you to make the normally L3 interfaces on a router act like a switch. The BVI is equivalent to an SVI.

For a bit more detail: Understanding and Configuring VLAN Routing and Bridging on a Router Using the IRB Feature - Cisco Systems

notgoing2fail

kalebksp wrote: »

A bridge group allows you to make the normally L3 interfaces on a router act like a switch. The BVI is equivalent to an SVI.

For a bit more detail: Understanding and Configuring VLAN Routing and Bridging on a Router Using the IRB Feature - Cisco Systems

Thanks, I had read some docs but not this one, looks like it will take me awhile to inhale all this info...

Just to be clear, SVI is the same thing as a vlan interface right?

creamy_stew

notgoing2fail wrote: »

Just to be clear, SVI is the same thing as a vlan interface right?

Yes

(config)#int vlan 333 !creates an SVI