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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 64. IPv6 IS-IS Sample Topography
The following is a sample configuration for enabling IPv6 IS-IS.
IS-IS Sample Configuration Congruent Topology
DellEMC(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
DellEMC(conf-if-te-3/17)#
DellEMC(conf-router_isis)#show config
!
router isis
metric-style wide level-1
metric-style wide level-2
net 34.0000.0000.AAAA.00
DellEMC(conf-router_isis)#
IS-IS Sample Configuration Multi-topology
DellEMC(conf-if-te-3/17)#show config
!
interface TenGigabitEthernet 3/17
ipv6 address 24:3::1/76
ipv6 router isis
no shutdown
DellEMC(conf-if-te-3/17)#
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Intermediate System to Intermediate System