Nortel/Tasman BGP Configuration by topology

   April 9, 2008

 

BGP Configuration by Topology

I believe that the below topologies will cover most of BGP configuration out there. If you need a configuration for more specific topology, please send email me at [email protected].

 

BGP topology 1

  • ISPs : 1
  • WAN links : 1
  • CPE : 1
  • PE : 1

 

Sample configurations

1-1-1. Nortel Single BGP with default route
1-2-1. Nortel Single BGP with Local pref
1-3-1. Nortel Single BGP with AS prepend
1-4-1. Nortel Single BGP with Community string
 
 

BGP topology 2

  

  • ISPs : 1
  • WAN links : 2
  • CPE : 1
  • PE : 1

 

Sample configurations

2-1-1. Nortel BGP with Multi-hop eBGP
2-1-2. BGP with Local pref (Load-balancing)
2-2-1. BGP with AS prepend (Redundancy)
2-2-2. BGP with AS prepend (Load-balancing)
2-3-1. BGP with Community string(Redundancy)
2-3-1. BGP with Community string(Load-balancing)
 
 

BGP topology 3

  

  • ISPs : 1
  • WAN links : 2
  • CPE : 1
  • PE : 2

 

Sample configurations

3-1-1. Nortel dual BGP with Local pref (Redundancy)
3-1-2. Nortel dual BGP with Local pref (Load-balancing)
3-2-1. Nortel dual BGP with AS prepend (Redundancy)
3-2-2. Nortel dual BGP with AS prepend (Load-balancing)
3-3-1. Nortel dual BGP with Community string(Redundancy)
3-3-2. Nortel dual BGP with Community string(Load-balancing)
 
 

BGP topology 4

  

  • ISPs : 2
  • WAN links : 2
  • CPE : 1
  • PE : 2

 

Sample configurations

4-1-1. Nortel dual BGP with Local pref (Redundancy)
4-1-2. Nortel dual BGP with Local pref (Load-balancing)
4-2-1. Nortel dual BGP with AS prepend (Redundancy)
4-2-2. Nortel dual BGP with AS prepend (Load-balancing)
4-3-1. Nortel dual BGP with Community string(Redundancy)
4-3-2. Nortel dual BGP with Community string(Load-balancing)

BGP topology 5

  

  • ISPs : 1
  • WAN links : 2
  • CPE :2
  • PE : 2

 

Sample configurations

5-1-1. Nortel dual BGP with Local pref (Redundancy)
5-1-2. Nortel dual BGP with Local pref (Load-balancing)
5-2-1. Nortel dual BGP with AS prepend (Redundancy)
5-2-2. Nortel dual BGP with AS prepend (Load-balancing)
5-3-1. Nortel dual BGP with Community string(Redundancy)
5-3-2. Nortel dual BGP with Community string(Load-balancing)
 
 

BGP topology 6

  

  • ISPs : 2
  • WAN links : 2
  • CPE :2
  • PE : 2

 

Sample configurations

6-1-1. Nortel dual BGP with Local pref (Redundancy)
6-1-2. Nortel dual BGP with Local pref (Load-balancing)
6-2-1. Nortel dual BGP with AS prepend (Redundancy)
6-2-2. Nortel dual BGP with AS prepend (Load-balancing)
6-3-1. Nortel dual BGP with Community string(Redundancy)
6-3-2. Nortel dual BGP with Community string(Load-balancing)

 

 

 

 

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Author: Chris Yoon

IT professional