Brocade Network OS Administrator’s Guide v4.1.1 - Manual (Page 629)

switch(config-bgp-ipv4u)# redistribute ?
Possible completions:
connected Connected
ospf Open Shortest Path First (OSPF)
static Static routes
While redistributing routes learned by OSPF, you can specify the type of routes to be redistributed. You
can choose to redistribute internal, external type1, or external type2 routes.
The redistribute ospf command redistributes internal OSPF routes in a way that is equivalent to the
effect of the redistribute ospf match internal command, as illustrated in this running-config excerpt:
router bgp
local-as 6500
address-family ipv4 unicast
redistribute ospf match internal
redistribute ospf match external1
redistribute ospf match external2
Advertised networks
As described in the previous section, you can advertise routes into BGP by redistributing static,
connected, or OSPF routes. However, you can explicitly specify routes to be advertised by BGP by
using the network command in IPv4 address-family submode:
switch(config-bgp-ipv4u)# network 10.40.25.0/24
Before BGP can advertise this route, the routing table must have this route already installed.
Another use of the network command is to specify a route to be local. In case the same route is
received by means of EBGP, the local IGP route will be preferred. 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.
switch(config-bgp-ipv4u)# network 10.40.25.0/24 backdoor
The neighbor weight command specifies a weight that the device adds to routes that are received from
the specified BGP neighbor. (BGP4 prefers larger weights over smaller weights.)
Static networks
Before advertising any route, BGP checks for its existence in the routing table. If you want BGP to
advertise a stable route that does not depend on its existence in the routing table, then use the static-
network command to advertise that network:
switch(config-bgp-ipv4u)# static-network 10.40.25.0/24
When the configured route is lost, BGP installs the "null0" route in the routing table. Later, when the
route is resolved, the null0 route is removed. You can override the administrative local distance of 200
by specifying the distance value in the command:
switch(config-bgp-ipv4u)# static-network 10.40.25.0/24 distance 300
Route reflection
A BGP device can act as a route-reflector client or as a route reflector. You can configure a BGP peer
as a route-reflector client from the device that is going to reflect the routes and act as the route reflector:
switch(config-bgp-ipv4u)# neighbor 10.61.233.2 route-reflector-client
Advertised networks
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