BGP Multi-homing: Design and Troubleshooting - Video from live Webcast

[Mani Ganesan]

This is a video from the live webcast on BGP Multi-homing with Cisco Support Engineer and CCIE Manigandan Ganesan. This webcast provides an overview of BGP Multihoming and gives advice on how to troubleshoot common BGP problems like peering and high CPU.

This FAQ has all the questions that were asked during the event. You can also view more related questions answered by Manigandan in this Ask the Expert Event.

[ciscodaze]

very nice presentation Mani, very clear.

KN

[peddapalli.p]

Hi Everybody, I'm new to this forum. I cannot view the above video. Can you pls suggest me how to open it?

[Steven73]

hi Manigandan

It is informative and BGP useful case

I have queries on Load Balancing mode

1. on p.29,

 network 121.10.0.0 mask 255.255.224.0
network 121.10.0.0 mask 255.255.240.0

Is network 121.10.0.0 mask 255.255.240.0 already included in network 121.10.0.0 mask 255.255.224.0 ? if yes, then network 121.10.0.0 mask 255.255.224.0 is enough ? no need

network 121.10.0.0 mask 255.255.240.0 ?

on p.23, Announce /19 aggregate on each link

but on p.28, Split /19 and announce as two /20s, one on each link

to split 121.10.0.0 /19, would it be  121.10.0.0/20 and 121.10.16.0/20 ?

apply 121.10.0.0/20 on router A, 121.10.16.0/20 on router B ?

2. on p.29, ip prefix-list default permit 0.0.0.0/0. if which networks would be inbound, then that networks is allowed ? to minimize unknown inbound traffic

thanks

Steven73