Cisco Nexus 7000 Series - Limiting the Number of Redistributed Routes

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9-20
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 9 Configuring IS-IS
Configuring IS-IS
The following example shows how to redistribute EIGRP into IS-IS:
switch# config t
switch(config)# router isis Enterprise
switch(config-router)# address-family ipv4 unicast
switch(config-router-af)# redistribute eigrp 201 route-map ISISmap
switch(config-router-af)# copy running-config startup-config
Limiting the Number of Redistributed Routes
Route redistribution can add many routes to the IS-IS route table. You can configure a maximum limit
to the number of routes accepted from external protocols. IS-IS provides the following options to
configure redistributed route limits:
Step 3
address-family ipv4 unicast
Example:
switch(config-router)# address-family
ipv4 unicast
switch(config-router-af)#
Enters address family configuration mode.
Step 4
redistribute {bgp as | {eigrp | isis |
ospf | ospfv3 | rip}
instance-tag |
static | direct} route-map
map-name
Example:
switch(config-router-af)# redistribute
eigrp 201 route-map ISISmap
Redistributes routes from other protocols into IS-IS.
See the “Configuring Route Maps” section on
page 16-11 for more information about route maps.
Step 5
default-information originate [always]
[route-map map-name ]
Example:
switch(config-router-af)#
default-information originate always
(Optional) Generates a default route into IS-IS.
Step 6
distribute {level-1 | level-2} into
{level-1 | level-2} {route-map
route-map
| all}
Example:
switch(config-router-af)# distribute
level-1 into level-2 all
(Optional) Redistributes routes from one IS-IS level to
the other IS-IS level.
Step 7
show isis [vrf vrf-name ] ip route
ip-prefix [ detail | longer-prefixes
[summary | detail]]
Example:
switch(config-router-af)# show isis ip
route
(Optional) Shows the routes IS-IS.
Step 8
copy running-config startup-config
Example:
switch(config-router-af)# copy
running-config startup-config
(Optional) Saves this configuration change.
Command Purpose