Administrator Guide

NOTE: Whenever you make IS-IS conguration changes, clear the IS-IS process (re-started) using the clear isis command.
The clear isis command must include the tag for the ISIS process. The following example shows the response from the
router:
Dell#clear isis *
% ISIS not enabled.
Dell#clear isis 9999 *
You can congure IPv6 IS-IS routes in one of the following three dierent methods:
•
Congruent Topology — You must congure both IPv4 and IPv6 addresses on the interface. Enable the ip router isis and ipv6
router isis commands on the interface. Enable the wide-metrics parameter in router isis conguration mode.
• Multi-topology — You must congure the IPv6 address. Conguring the IPv4 address is optional. You must enable the ipv6 router
isis command on the interface. If you congure IPv4, also enable the router isis command. In router isis conguration mode,
enable multi-topology under address-family ipv6 unicast.
• Multi-topology Transition — You must congure the IPv6 address. Conguring the IPv4 address is optional. You must enable the
ipv6 router isis command on the interface. If you congure IPv4, also enable the ip router isis command. In router isis
conguration mode, enable multi-topology transition under address-family ipv6 unicast.
Figure 60. IPv6 IS-IS Sample Topography
IS-IS Sample Conguration — Congruent Topology
The following is a sample conguration for enabling IPv6 IS-IS.
Dell(conf-if-te-3/17)#show config
!
interface TenGigabitEthernet 3/17
ip address 24.3.1.1/24
ipv6 address 24:3::1/76
ip router isis
ipv6 router isis
no shutdown
Dell (conf-if-te-3/17)#
Dell (conf-router_isis)#show config
!
router isis
metric-style wide level-1
metric-style wide level-2
Intermediate System to Intermediate System
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