Example For Configuring Bgp To Interact With An Igp - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

8.28.2 Example for Configuring BGP to Interact with an IGP

Configuring BGP to interact with an IGP can enrich routing tables.
Networking Requirements
As the Internet grows, devices in different networks need to access each other, data needs to be
reliably transmitted, and the traffic interruption time needs to be minimized. This requires that
routing information be transmitted widely and network convergence be accelerated. BGP can
transmit routing information efficiently and widely. BGP, however, does not calculate routes by
itself. An IGP can implement rapid route convergence, but it transmits routing information with
a low efficiency in a limited scope. After BGP is configured to interact with an IGP, IGP routes
can be imported into BGP routing tables and can be transmitted efficiently, and BGP routes can
also be imported to IGP routing tables so that ASs can access each other.
The network shown in
IGP is used to calculate routes. In this example, OSPF is used as an IGP. BGP can be configured
to enable the two ASs to access each other. Interaction between BGP and the IGP can be
configured on edge routers in the two ASs so that the two ASs can exchange routes efficiently
and access each other.
Figure 8-30 Networking diagram for configuring BGP to interact with an IGP
Configuration Roadmap
The configuration roadmap is as follows:
1.
2.
3.
4.
Data Preparation
To complete the configuration, you need the following data:
Issue 02 (2014-09-30)
Figure 8-30
GE1/0/0
8.1.1.1/24
POS2/0/0
3.1.1.2/24
POS2/0/0
RouterA
3.1.1.1/24
AS 65008
Configure OSPF on Routers B and C so that these devices can access each other.
Establish an EBGP connection between Routers A and B so that these devices can exchange
routing information.
Configure BGP and OSPF to import routes from each other on Router B and view routing
information in the routing table of Router B.
(Optional) Configure BGP route summarization on Router B to simplify the BGP routing
table.
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is divided into AS 65008 and AS 65009. In AS 65009, an
POS1/0/0
9.1.1.1/24
POS1/0/0
9.1.1.2/24
RouterB
AS 65009
8 BGP Configuration
GE2/0/0
9.1.2.1/24
RouterC
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