DELL S50V User Manual

Intermediate System to Intermediate System | 525

Distribute Routes

Another method of controlling routing information is to filter the information through a prefix list. Prefix 
lists are applied to incoming or outgoing routes and routes must meet the conditions of the prefix lists or 
FTOS does not install the route in the routing table. The prefix lists are globally applied on all interfaces 
running IS-IS. 

Configure the prefix list in the PREFIX LIST mode prior to assigning it to the IS-IS process. For 
configuration information on prefix lists, see 

.

Use the following commands in ROUTER ISIS mode to apply prefix lists to incoming or outgoing IPv4 
routes.

Note: These commands apply to IPv4 IS-IS only. Use the ADDRESS-FAMILY IPV6 mode shown later to 
apply prefix lists to IPv6 routes

 

 

[

] 

ROUTER ISIS

Apply a configured prefix list to all incoming 
IPv4 IS-IS routes.
Enter the type of interface and slot/port 
information:

•

For a 1-Gigabit Ethernet interface, enter 
the keyword 

 followed 

by the slot/port information. 

•

For the Loopback interface on the RPM, 
enter the keyword 

 followed by 

a number from 0 to 16383.

•

For a port channel, enter the keyword 

 followed by a number from 

1 to 255 for TeraScale and ExaScale, 1 to 
32 for EtherScale.

•

For a SONET interface, enter the keyword 

 followed by slot/port information. 

•

For a 10-Gigabit Ethernet interface, enter 
the keyword 

 

followed by the slot/port information. 

•

For a VLAN, enter the keyword 

 

followed by a number from 1 to 4094.
E-Series ExaScale platforms support 

4094 VLANs with FTOS version 

8.2.1.0 and later. Earlier ExaScale 

supports 2094 VLANS.