User guide

Configuring BGP Configuring Redistribution
OmniSwitch AOS Release 7 Advanced Routing Configuration Guide March 2015 page 4-51
To add addresses to an access list, use the ip access-list address (IPv4) or the ipv6 access-list address
(IPv6) command. For example, the following commands add addresses to an existing access list:
-> ip access-list ipaddr address 16.24.2.1/16
-> ipv6 access-list ip6addr address 2001::1/64
Use the same access list name each time the above commands are used to add additional addresses to the
same access list. In addition, both commands provide the ability to configure if an address and/or its
matching subnet routes are permitted or denied redistribution. For example:
-> ip access-list ipaddr address 16.24.2.1/16 action deny redist-control all-
subnets
-> ipv6 access-list ip6addr address 2001::1/64 action permit redist-control no-
subnets
For more information about configuring access list commands, see the “IP Commands” chapter in the
OmniSwitch AOS Release 7 CLI Reference Guide.
Configuring Route Map Redistribution
The ip redist command is used to configure the redistribution of routes from a source protocol into the
BGP destination protocol. This command is used on the BGP router that will perform the redistribution.
A source protocol is a protocol from which the routes are learned. A destination protocol is the one into
which the routes are redistributed. Make sure that both protocols are loaded and enabled before
configuring redistribution.
Redistribution applies criteria specified in a route map to routes received from the source protocol.
Therefore, configuring redistribution requires an existing route map. For example, the following command
configures the redistribution of OSPF routes into the BGP network using the ospf-to-bgp route map:
-> ip redist ospf into bgp route-map ospf-to-bgp
OSPF routes received by the router interface are processed based on the contents of the ospf-to-bgp route
map. Routes that match criteria specified in this route map are either allowed or denied redistribution into
the BGP network. The route map may also specify the modification of route information before the route
is redistributed. See “Using Route Maps” on page 4-47 for more information.
To remove a route map redistribution configuration, use the no form of the ip redist command. For
example:
-> no ip redist ospf into bgp route-map ospf-to-bgp
Use the show ip redist command to verify the redistribution configuration:
-> show ip redist
Source Destination
Protocol Protocol Status Route Map
------------+------------+---------+--------------------
LOCAL4 RIP Enabled rip_1
LOCAL4 OSPF Enabled ospf_2
LOCAL4 BGP Enabled bgp_3
RIP OSPF Enabled ospf-to-bgp
Configuring the Administrative Status of the Route Map Redistribution
To change the default administrative status of a route map redistribution configuration, use the status
parameter with the ip redist command. For example, the following command disables the redistribution
administrative status for the specified route map: