ipv6 ospf and rip understaning the routing table

hossameldinroshdy · ‎07-12-2014

Hello,

I faced an issue that i dont understand the reason for it. A case study to practice the ospf and rip for ipv6 it contains two routers each with one loopback.

when configuring ripng and ospf3 on both routers the loopbacks on both routers are in the routing table with two entries once with ripng (/64) and the other with osps3 (/128). I understand that the two entries must be in the routing table because the different prefix. The question here why rip sends (/64 preifx) while ospf sends (/128 prefix).

R4 table:

R   2011:5555::/64 [120/2]
     via FE80::C800:FF:FEDC:8, Serial1/1
O   2011:5555::1/128 [110/64]
     via FE80::C800:FF:FEDC:8, Serial1/1

R5 table:

R   2011:1111::/64 [120/2]
     via FE80::C803:1CFF:FE48:8, Serial1/1
O   2011:1111::1/128 [110/64]
     via FE80::C803:1CFF:FE48:8, Serial1/1

Thanks,

sincerely,

Hossam El-Din Roshdy

Fahad Wasi · ‎07-13-2014

Hi

we can see from this is that it is an IPV6 based configuration ,and these protocols must be on different subnet ,that's why you see /64 for RIP and /128 for OSPF.