NTC/362: Fundamentals of Networking
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NTC/362: Fundamentals of Networking
Q: Consider the following output:
R1#show ipv6 int fa 0/0
FastEthernet0/0 is up, line protocol is up
IPv6 is enabled, link-local address is FE80::200:11FF:FE11:1111
No Virtual link-local address(es):
Global unicast address(es):
2001:12:32::1, subnet is 2001:12:32::/64
Joined group address(es):
FF02::1
FF02::2
FF02::5
FF02::6
FF02::9
FF02::A
FF02::1:FF00:1
FF02::1:FF11:1111
MTU is 1500 bytes
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ICMP unreachables are sent
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds (using 42973)
ND advertised reachable time is 0 (unspecified)
ND advertised retransmit interval is 0 (unspecified)
ND router advertisements are sent every 200 seconds
ND router advertisements live for 1800 seconds
ND advertised default router preference is Medium
Hosts use stateless autoconfig for addresses.
R1#
What can be determined based on the output provided?
Each correct answer represents a complete solution. Choose all that apply.
A: The router is running IPv6 EIGRP, The router is running OSPFv3.
Explanation: IPv6 devices join multicast groups depending on which multicast traffic they want to process. OSPF is the multicast group ending in 5 and 6. EIGRP is the group ending in A, and RIPng is the group ending in 9.
The router is enabled for IPv6 unicast routing because it has joined the group ending in 2. The link-local address very well could be using the defaults, if the MAC address is 0000.1111.1111. The output shows that duplicate address detection (DAD) is on.
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