| Exam 400-101 | Question id=772 | Layer 3 Technologies |
Which of the following statements is correct regarding EIGRPv6?
| A. |
The ipv6 router eigrp asnumber command enables EIGRPv6 on all router interfaces, including passive interfaces and loopback interfaces. | |
| B. |
The network command configures the networks that should be advertised by EIGRPv6. | |
| C. |
The auto-summary command enables automatic summarization for EIGRPv6. | |
| D. |
The distribute-list route-map command enables route filtering for EIGRPv6. | |
| E. |
The no shutdown command enables the EIGRPv6 routing process. | |
| F. |
The v6routerid command configures an EIGRPv6 router ID. |
The no shutdown command enables the Enhanced Interior Gateway Routing Protocol version 6 (EIGRPv6) routing process. EIGRPv6 is also referred to as EIGRP for IPv6. To enable EIGRPv6 on a router, you should issue the ipv6 router eigrp as-number command in global configuration mode, where as-number is the autonomous system number (ASN), then issue the no shutdown command in router configuration mode to start the routing process.
The ipv6 router eigrp as-number command does not enable EIGRPv6 on any router interfaces; it only creates the EIGRPv6 routing process. EIGRPv6 must be enabled on each interface that should participate in EIGRP routing. To enable EIGRPv6 on an interface, you should issue the ipv6 eigrp as-number command in interface configuration mode. You need not configure EIGRPv6 on any interfaces that are configured as passive interfaces.
The network command does not configure the networks that should be advertised by EIGRPv6, because EIGRPv6 is configured directly on each participating interface.
The network command is used with EIGRP for IPv4 to specify the networks that should be advertised out the router's interfaces.
The auto-summary command does not enable automatic summarization for EIGRPv6. IPv6 does not use classful routing like IPv4 does, so automatic summarization is not possible with EIGRPv6.
The distribute-list route-map command cannot be used to filter routes in EIGRPv6. However, you can filter the EIGRPv6 routing updates by prefix-list. To implement
prefix list route filtering, you should issue the distribute-list prefix-list list-name command in router configuration mode.
The v6routerid command does not configure an EIGRPv6 router ID. The EIGRPv6 router ID is the same as the EIGRPv4 router ID, which is automatically configured unless there are no IPv4 addresses configured on the router. If there are no IPv4 addresses configured on the router, you must issue the routerid id command in router configuration mode to manually configure a router ID, where id is a 32bit value similar to an IPv4 address.