Linux – Simple Quagga BGP router

bgpgentooip-routinglinuxrouter

We are attempting to setup a Gentoo Linux box to run a Quagga BGP router for our internet connection. We've tried many things, but everything we've tried results in Quagga reporting that there is no BGP network available and it never connects to the neighbor router. I think a fresh start is going to be our best bet, so our question is:

What configuration would we need to use (bgpd.conf/zebra.conf) to get the following setup working:
(please note: I just chose a couple random Google IP ranges, these are not the real IP addresses)

  • Router IP: 74.125.53.103/29
  • Router AS: 9283
  • Public IP Range: 209.85.171.0/24 (these are the public IP addresses we use which run through the router listed above)
  • Neighbor IP: 74.125.53.104/29
  • Neighbor AS: 9283

We currently have this setup and running through a Linksys home router running the DD-WRT firmware. It works like a champ, but the load is beginning to be too much for it. We've considered several options for routers and for various reasons I won't go into, running our own custom built router seems to be the favored choice.

Thank you in advance for your help, we've been pulling our hair out trying to figure this out!

Best Answer

Here's another example, with basic filtering (no RFC1918 inbound routes, only advertise your local prefix:

router bgp YOURASN
 bgp router-id BGP_ROUTER_IP_ADDRESS
 network 209.85.171.0/24
 neighbor myisp peer-group
 neighbor myisp remote-as ISPASN
 neighbor myisp distribute-list 3 in
 neighbor myisp distribute-list 4 out
 neighbor myisp filter-list 2 out
 neighbor ISP_ROUTER_IP_ADDRESS peer-group myisp
 distance bgp 150 150 150
!
access-list 3 deny 10.0.0.0 0.0.0.255
access-list 3 deny 192.168.0.0 0.0.255.255
access-list 3 deny 172.16.0.0 0.15.255.255
access-list 3 permit any
access-list 4 permit 209.85.171.0 0.0.0.255
!
ip as-path access-list 2 permit ^$
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