Confused about Sh IPv6 route outpout on test exam question.

[Reprovoid]

   Hi.I'm doing a lab test question.It's a simple configuration task for IPv6 and RIPng.I've attached an Image.

There are two routers with a single serial link that each have a lan connected to there fa0/0 interface.When I enter the sh ipv6 route command on either router , I see the RIP learned route to the fa0/0 Interface ends with " via (link local address) , fast ethernet 0/0.I understand the link local addresses for the fast ethernet and serial are the same due to serial interfaces not having a mac address.Why Is the fa0/0 interface mentioned as the outgoing Interface Instead of the routers serial Interface ?

[John Blakley · Accepted solution]

Good eye...it should be pointing out your s0/0/1 interface as you would expect. It's a problem with the question/simulator. I labbed it up so you can see:

R3#sh ipv6 route

IPv6 Routing Table - 6 entries

Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP

       U - Per-user Static route, M - MIPv6

       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary

       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2

       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2

       D - EIGRP, EX - EIGRP external

C   2001:23::/64 [0/0]

     via ::, Serial0/0

L   2001:23::3/128 [0/0]

     via ::, Serial0/0

R   3001:12::/64 [120/2]

     via FE80::C609:B6FF:FEA5:0, Serial0/0

C   3001:34::/64 [0/0]

     via ::, FastEthernet0/0

L   3001:34::3/128 [0/0]

     via ::, FastEthernet0/0

L   FF00::/8 [0/0]

     via ::, Null0

R3#

HTH,

John

[Reprovoid]

Hi.Thanks for taking a look! I was getting confused there.