| Exam 642-883 | Question id=3436 | IS-IS, IPv4, and IPv6 in Service Provider Environments |
Refer to the Cisco IOS XE IS-IS configuration exhibit.
interface GigabitEthernet0/0/0
ip address 192.168.104.40 255.255.255.0
ip router isis
ipv6 address 2001:DB8:192:168:104::40/80
ipv6 enable
ipv6 router isis
!
interface GigabitEthernet0/0/1
ip address 192.168.134.40 255.255.255.0
ip router isis
ipv6 address 2001:DB8:192:168:134::40/80
ipv6 enable
ipv6 router isis
!
router isis 1
net 49.0004.0100.0400.1001.00
summary-address 10.4.10.0 255.255.255.0
!
What are two problems with the configuration that are causing the IPv4, or the IPv6, or the IPv4 and IPv6 IS-IS operations to fail?
| A. |
The configuration is missing the interface gi0/0 and interface gi0/0 commands under router isis 1. | |
| B. |
The configuration is missing the address-family ipv4 unicast and address-family ipv6 unicast commands under router isis 1. | |
| C. |
IPv6 unicast routing has not been enabled globally on the Cisco IOS XE router. | |
| D. |
The gi0/0 and gi0/1 interfaces are not participating in the router isis 1 routing instance. | |
| E. |
Multitopology IS-IS must be enabled to support both IPv4 and IPv6. | |
| F. |
Another router isis instance must be enabled to support IPv6. |
When using user-network interface (UNI) or enhanced network interface (ENI) ports for any IPv6-related features, you must first globally enable IP routing and IPv6 routing on the switch by entering the ip routing ipv6 unicast-routing