Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 415)

To set the number of equal-cost multipath IBGP routes or paths that will be selected, enter commands
such as the following.
device(config)# router bgp
device(config-bgp)# maximum-paths ibgp
Syntax: [no] maximum-paths ibgp number
The number variable specifies the number of equal-cost multipath IBGP routes that will be selected.
The range is 2 to 8. If the value is set to 1, BGP4 level equal-cost multipath is disabled for IBGP routes.
To set the number of equal-cost multipath EBGP routes or paths that will be selected, enter commands
such as the following.
device(config)# router bgp
device(config-bgp)# maximum-paths ebgp
Syntax: [no] maximum-paths ebgp num
The number variable specifies the number of equal-cost multipath EBGP routes that will be selected.
The range is 2 to 8. If the value is set to 1, BGP4 level equal-cost multipath is disabled for EBGP routes.
Specifying a list of networks to advertise
By default, the device sends BGP4 routes only for the networks you either identify with the network
command or are redistributed into BGP4 from OSPF, RIP, or connected routes.
NOTE
The exact route must exist in the IP route table before the device can create a local BGP4 route.
To configure the device to advertise network 10.157.22.0/24, enter the following command.
device(config-bgp-router)# network 10.157.22.0 255.255.255.0
Syntax: [no] network ip-addr ip-mask [route-map map-name] | [weight num] | [backdoor]
The ip-addr is the network number and the ip-mask specifies the network mask.
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.
If it is not, the default action is to deny redistribution.
The weight num parameter specifies a weight to be added to routes to this network.
The backdoor parameter changes the administrative distance of the route to this network from the
EBGP administrative distance (20 by default) to the Local BGP4 weight (200 by default), tagging the
route as a backdoor route. Use this parameter when you want the device to prefer IGP routes such as
RIP or OSPF routes over the EBGP route for the network.
Specifying a route map when configuring BGP4 network advertising
You can specify a route map when you configure a BGP4 network to be advertised. The device uses
the route map to set or change BGP4 attributes when creating a local BGP4 route.
NOTE
You must configure the route map before you can specify the route map name in a BGP4 network
configuration; otherwise, the route is not imported into BGP4.
Specifying a list of networks to advertise
FastIron Ethernet Switch Layer 3 Routing Configuration Guide 415
53-1003087-04