Reference Guide

510 | Intermediate System to Intermediate System
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Redistributing Routes
In addition to filtering routes, you can add routes from other routing instances or protocols to the IS-IS
process. With the
redistribute command, you can include border gateway protocol (BGP), open shortest
path first (OSPF), routing information protocol (RIP), static, or directly connected routes in the IS-IS
process.
To add routes from other routing instances or protocols, use the following commands.
Command Syntax Command Mode Purpose
distribute-list prefix-list-name in [interface] ROUTER ISIS-AF
IPV6
Apply a configured prefix list to all incoming
IPv6 IS-IS routes.
Enter the type of interface and slot/port
information:
• For a 1-Gigabit Ethernet interface, enter
the keyword
GigabitEthernet then the
slot/port information.
• For the Loopback interface on the RPM,
enter the keyword
loopback then a
number from 0 to 16383.
• For a port channel, enter the keyword
port-channel then a number from 1 to
255.
• For a 10-Gigabit Ethernet interface, enter
the keyword
TenGigabitEthernet then
the slot/port information.
• For a VLAN, enter the keyword
vlan then
a number from 1 to 4094.
distribute-list prefix-list-name out [bgp
as-number | connected | ospf process-id | rip |
static]
ROUTER ISIS-AF
IPV6
Apply a configured prefix list to all outgoing
IPv6 IS-IS routes. You can configure one of
the optional parameters:
•
connected: for directly connected routes.
•
ospf process-id: for OSPF routes only.
•
rip: for RIP routes only.
•
static: for user-configured routes.
•
bgp: for BGP routes only.
distribute-list redistributed-override in
ROUTER ISIS-AF
IPV6
Deny RTM download for pre-existing
redistributed IPv6 routes.
Note: Do not route iBGP routes to IS-IS unless there are route-maps associated with the IS-IS
redistribution.
Note: These commands apply to IPv4 IS-IS only. To apply prefix lists to IPv6 routes, use the
ADDRESS-FAMILY IPV6 mode.