White Papers

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#
Controlling Routing Updates
To control the source of IS-IS route information, use the following command.
● Disable a specific interface from sending or receiving IS-IS routing information.
ROUTER ISIS mode
passive-interface interface
○ For the Loopback interface on the RPM, enter the keyword loopback then a number from 0 to 16383.
○ For a port channel, enter the keywords 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 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 PREFIX LIST mode prior to assigning it to the IS-IS process. For configuration information on prefix
lists, refer to Access Control Lists (ACLs).
Redistributing IPv4 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.
NOTE: Do not route iBGP routes to IS-IS unless there are route-maps associated with the IS-IS redistribution.
To add routes from other routing instances or protocols, use the following commands.
NOTE:
These commands apply to IPv4 IS-IS only. To apply prefix lists to IPv6 routes, use ADDRESS-FAMILY IPV6 mode,
shown later.
● Include BGP, directly connected, RIP, or user-configured (static) routes in IS-IS.
ROUTER ISIS mode
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]
Configure the following parameters:
○ level-1, level-1-2, or level-2: assign all redistributed routes to a level. The default is level-2.
○ metric-value the range is from 0 to 16777215. The default is 0.
○ metric-type: choose either external or internal. The default is internal.
○ map-name: enter the name of a configured route map.
● Include specific OSPF routes in IS-IS.
ROUTER ISIS mode
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Intermediate System to Intermediate System