[c-nsp] bgp as pe ce

[Aaron]

Charlie and Cisco NSP group, y'all are awesome!

local-as 16527 no-prepend replace-as  (ios xr)

bam!

Thanks man

Aaron

p.s. my only hope is to help y'all somehow someway in the future as much and
as fast as y'all have helped me these last few months.

P.s.s  - details....i had to get pe-ce bgp working to my sp....  I wanted to
use a private as for my internal mpls l3vpn purposes...  my overarching
global bgp AS number was showing up as part of the as path list and my sp as
rcv'ng it BUT when I got handed to another sp (at&t) that seemed to break
the bgp peering for that /24. (this is a first for me doing this previously
I was solely connected to at&t)

neighbor 1.2.3.4
  remote-as 789
  local-as 345 no-prepend replace-as  <--------------this did the trick
  address-family ipv4 unicast
  route-policy ipv4-allow-in in
  route-policy ipv4-allow-out out

(the rest of the config is below....)


-----Original Message-----
From: Charlie Burns [mailto:cburns at frontiernetworks.ca] 
Sent: Tuesday, July 10, 2012 3:32 PM
To: Aaron; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] bgp as pe ce

http://blog.ioshints.info/2008/01/fix-bgp-as-number-mismatch.html

no-prepend disables local-as prepending on incoming EBGP updates; replace-as
replaces router's own AS with local-as on outgoing EBGP updates.

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Aaron
Sent: July-10-12 4:24 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] bgp as pe ce

When I advertise 1.3.9.0/24 to my ISP they are seeing the as-path as..  345
64512

 

How do I get rid of 64512 so it's not sent as part of the as-path ?

 

My intentions were to use 64512 as my internal As that I use to run bgp
between all my pe's for my internal mpls l3vpn's...

 

router bgp 64512

bgp router-id 10.10.0.10

address-family vpnv4 unicast

!

neighbor 10.101.12.253

  remote-as 64512

  update-source Loopback0

  address-family vpnv4 unicast

  !

!

vrf one

  rd 10.10.0.10:1

  address-family ipv4 unicast

   maximum-paths ibgp 2 unequal-cost

   network 1.3.9.0/24

 

  neighbor 1.2.3.4

   remote-as 789

   local-as 345

   address-family ipv4 unicast

    route-policy ipv4-allow-in in

    route-policy ipv4-allow-out out

 

I also tried the two ways  of removing private AS and this didn't work.

 

  neighbor 1.2.3.4

   remote-as 789

   local-as 345

address-family ipv4 unicast

  route-policy ipv4-allow-in in

  route-policy ipv4-allow-out out

  remove-private-AS entire-aspath

 

didn't work

 

  neighbor 1.2.3.4

   remote-as 789

   local-as 345

address-family ipv4 unicast

  route-policy ipv4-allow-in in

  route-policy ipv4-allow-out out

  remove-private-AS

 

didn't work

 

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