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NOTE: Whenever you make IS-IS configuration 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 configure IPv6 IS-IS routes in one of the following three different methods:
• Congruent Topology — You must configure 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 configuration mode.
• Multi-topology — You must configure the IPv6 address. Configuring the IPv4 address is optional. You
must enable the ipv6 router isis command on the interface. If you configure IPv4, also enable
the
router isis command. In router isis configuration mode, enable multi-topology under
address-family ipv6 unicast.
• Multi-topology Transition — You must configure the IPv6 address. Configuring the IPv4 address is
optional. You must enable the ipv6 router isis command on the interface. If you configure IPv4,
also enable the ip router isis command. In router isis configuration mode, enable multi-
topology transition
under address-family ipv6 unicast.
Figure 54. IPv6 IS-IS Sample Topography
IS-IS Sample Configuration — Congruent Topology
IS-IS Sample Configuration — Multi-topology
IS-IS Sample Configuration — Multi-topology Transition
The following is a sample configuration for enabling IPv6 IS-IS.
Dell(conf-if-te-3/17)#show config
!
interface TenGigabitEthernet 3/17
ip address 24.3.1.1/24
512
Intermediate System to Intermediate System