Reference Guide

Intermediate System to Intermediate System | 441
Redistribute 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 syntax, you can include BGP, OSPF, RIP, static, or directly
connected routes in the IS-IS process.
IPv4 routes
Use any of the following commands in ROUTER ISIS mode to add routes from other routing instances or
protocols.
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. Use the ADDRESS-FAMILY IPV6 mode shown later to
apply prefix lists to IPv6 routes.
Command Syntax Command Mode Purpose
redistribute {bgp as-number | connected | rip |
static} [level-1 level-1-2 | level-2] [metric
metric-value] [metric-type {external | internal}]
[
route-map map-name]
ROUTER ISIS Include BGP, directly connected, RIP, or
user-configured (static) routes in IS-IS.
Configure the following parameters:
•
level-1, level-1-2, or level-2: Assign
all redistributed routes to a level.
Default is
level-2.
•
metric range: 0 to 16777215. Default is
0.
•
metric-type: choose either external or
internal. Default is internal.
•
map-name: name of a configured route
map.
redistribute ospf process-id [level-1| level-1-2 |
level-2] [metric value] [match external {1 | 2} | match
internal]
[metric-type {external | internal}]
[
route-map map-name]
ROUTER ISIS Include specific OSPF routes in IS-IS.
Configure the following parameters:
•
process-id range: 1 to 65535
•
level-1, level-1-2, or level-2:: Assign
all redistributed routes to a level.
Default is
level-2.
•
metric range: 0 to 16777215. Default is
0.
•
match external range: 1 or 2
• match internal
• metric-type: external or internal.
•
map-name: name of a configured route
map.