About joshvogel0

joshvogel0 · 09-16-2020

I'm new to interface bridging, and I have an ISR4431 running 03.16.04b.S on which I need to bridge between two interfaces for two hosts: One interface is connecting directly to a host, the other to a switch (diagram below). I initially configured it ...

joshvogel0 · 09-16-2020

This post is a duplicate, please see https://community.cisco.com/t5/routing/isr4431-bdi-not-forwarding-l2-traffic/td-p/4152279

joshvogel0 · 09-17-2020

I think we've found the problem.These hosts are a vendor's special proprietary blend, which I have next to no control over. With their blessing, I increased the subnet mask on the old host to /29 from /30 so we could add the new host. I reached out t...

joshvogel0 · 09-17-2020

Thanks for looking out! The top switch already handles the inter-vlan routing in my organization, so it's set up.

joshvogel0 · 09-17-2020

After moving the default gateway to the top switch, the "new host" acted the same, while the "old host" lost all connectivity. I'll keep fiddling with it a bit.Router:no interface bdi111Top switch: interface vlan111 ip address 1.1.1.1 255.255.255.248...

joshvogel0 · 09-17-2020

That is true, the hosts were using the router for their default gateway because it made the most sense logically with everything else that's going on with that router and the networks it's a part of. However, I can try moving the gateway to the top s...

joshvogel0 · 09-17-2020

Thank you, that is how it's currently configured, but good to have confirmation that it's correct now.Both hosts still need L3 access to other subnets/the internet, so the BDI is needed for that. However, for troubleshooting, I removed the BDI and th...

Member Since	‎10-27-2017 08:02 AM
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ISR4431 BDI not Forwarding L2 Traffic?

ISR4431 BDI Not Forwarding L2 Traffic

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Re: ISR4431 BDI not Forwarding L2 Traffic?

Re: ISR4431 BDI not Forwarding L2 Traffic?

Re: ISR4431 BDI not Forwarding L2 Traffic?