Reference Guide

Intermediate System to Intermediate System | 505
Figure 26-8. Command Example: show isis database
Controlling routing updates
Use the following commands in ROUTER ISIS mode to control the source of IS-IS route information.
Distributing 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
Dell Networking OS 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 Chapter 7, Access Control Lists (ACLs).
IPv4 routes:
Command Syntax Command Mode Purpose
passive-interface interface
ROUTER ISIS Disable a specific interface from sending or receiving
IS-IS routing information.
Enter the type of interface and slot/port information:
• For the Loopback interface, enter the keyword
loopback followed by a number from 0 to 16383.
• For a port channel, enter the keyword port-channel
followed by a number from 1 to 255.
• For a 10-Gigabit Ethernet interface, enter the
keyword TenGigabitEthernet followed by the slot/
port information.
• For a VLAN, enter the keyword vlan followed by a
number from 1 to 4094.
Dell#show isis database
IS-IS Level-1 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
B233.00-00 0x00000003 0x07BF 1088 0/0/0
eljefe.00-00 * 0x00000009 0xF76A 1126 0/0/0
eljefe.01-00 * 0x00000001 0x68DF 1122 0/0/0
eljefe.02-00 * 0x00000001 0x2E7F 1113 0/0/0
Dell.00-00 0x00000002 0xD1A7 1102 0/0/0
IS-IS Level-2 Link State Database
LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL
B233.00-00 0x00000006 0xC38A 1124 0/0/0
eljefe.00-00 * 0x0000000D 0x51C6 1129 0/0/0
eljefe.01-00 * 0x00000001 0x68DF 1122 0/0/0
eljefe.02-00 * 0x00000001 0x2E7F 1113 0/0/0
Dell.00-00 0x00000004 0xCDA9 1107 0/0/0
Dell#