Configure Mbgp Community Attributes; Importing Igp Routing Information Into Mbgp; Defining As Path List And Routing Policy; Configuring Mbgp Route Filtering - 3Com 8800 Configuration Manual

3Com Switch 8800 Configuration Guide

31.2.10 Configure MBGP Community Attributes

Within the MBGP, a community is a set of destinations with some characteriestics in
common. A community is not limited to a network or an AS has no physical boundary.
For details, refer to "BGP Configuration" in the Routing Protocol part.

31.2.11 Importing IGP Routing Information into MBGP

MBGP can advertise intra-area netwrok informaiton to other ASs. To this end, you can
use MBGP to advertise the intra-area network information that local router gets through
IGP routing protocol.
Please perform the following configurations in IPV4 multicast sub-address family view.
Table 31-13 Importing IGP routing information
Import IGP Routing Information into
MBGP
Delete the imported IGP routing
information
By default, MBGP does not import any route of other protocols.
Parameter Protocol specifies the source routing protocols of import, which can be
direct, static, rip, isis, ospf, ospf-ase or ospf-nssa at present.

31.2.12 Defining AS Path List and Routing Policy

To configure AS path list and routing polity you need to:
Configure the regular expression of autonomous systems (in system view);
The UPDATE information of MBGP contains an AS_PATH domain. The autonomous
system paths for MBGP routing information exchange is recorded in this domain.
Define the routing policy (in system view);
Define matching rules (in routing policy view);
Define value assigning rules (in routing policy view)
For the detailed configuration of regular expression of AS, refer to "BGP Configuration"
(section 6.2.4) of the Routing Protocol part of this manual. For the other configuration,
refer to the "IP Routing Policy Configuration" of the Routing Protocol part of this
manual.

31.2.13 Configuring MBGP Route Filtering

The route filtering configuration of MBGP is the same as that of unicast BGP.
For details, refer to "BGP Configuration" of the Routing Protocol part of this manual.
Operation
31-10
Chapter 31 MBGP Multicast Extension Configuration
Command
import-route protocol
policy-name ] [ med med-value ]
undo import-route protocol
[ route-policy