Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 378)

350 Multi-Service IronWare Routing Configuration Guide
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Configuring MBGP
Optional configuration tasks
The following sections describe how to perform some optional BGP4 configuration tasks.
NOTE
This section shows some of the more common optional tasks, including all the tasks that require
you to specify that they are for MBGP. Most tasks are configured only for BGP4 but apply both to
BGP4 and MBGP.
Advertising routes from the local AS to MBGP
You can configure the Brocade device to advertise directly-connected and static multicast routes
from the local AS to other ASs using the following methods:
• For directly-connected routes:
• Enable redistribution of directly-connected multicast routes.
• For indirectly-connected routes:
• Configure static IP multicast routes. The corresponding IP route must be present in the IP
multicast table.
• Explicitly configure network prefixes to advertise (network command).
NOTE
You can configure the device to advertise directly-connected networks into MBGP using the network
command. You are not required to use redistribution or configure static multicast routes.
Configuring a network prefix to advertise
By default, the Brocade device advertises MBGP routes only for the networks you identify using the
network command or that are redistributed into MBGP from IP multicast route tables.
NOTE
The exact route must exist in the IP multicast route table so that the Brocade device can create a
local MBGP route.
To configure the Brocade device to advertise network 10.95.22.0/24 as a multicast route, enter
the following command.
Brocade(config-bgp-ipv4m)# network 10.95.22.0 255.255.255.0
Syntax: [no] network ip-addr ip-mask [route-map map-name] [backdoor] [weight num]
The ip-addr is the network number and the ip-mask specifies the network mask.
NOTE
For IPv6 address family, make sure you enter the IP address in IPv6 format.
The route-map map-name parameter specifies the name of the route map you want to use to set or
change BGP4 attributes for the network you are advertising. The route map must already be
configured.
The backdoor parameter changes the administrative distance of the route to this network from the
EBGP administrative distance (20 by default) to the Local BGP weight (200 by default), thus tagging
the route as a backdoor route.