About Oh Drother

Oh Drother · 05-27-2020

Hi all, I was hoping for some insight regarding an issue I have been experiencing when peering OSPF via IP unnumbered. As per the Nexus 9k documenation, I have added the ip router ospf 100 area 0.0.1.146 to both the physical interfaces on 7236/cores,...

Oh Drother · 05-21-2020

Hi all, I was hoping for clarification regarding the OSPF database, with respect to the topology above. Both cores have type-7 LSAs coming from the directly redistributed subnets at 7236 site, which they then turn into type-5 LSA's. I'm confused as t...

Oh Drother · 04-15-2020

Does anyone have any insight on why I would be able to successfully ping a loopback address, but cannot successfully traceroute to it without the last hop timing out? I am not using any ACLs/NAT/Firewalls in this test. Example topology:R3<->R1<->R2R1...

Oh Drother · 05-21-2020

This is likely one of the best in depth and precise answers I could have ever hoped for. Thank you so much!

Oh Drother · 04-18-2020

Sorry about that. Show IP int lo101 is below: R2#show ip int lo101Loopback101 is up, line protocol is upInternet address is 2.2.2.2/32Broadcast address is 255.255.255.255Address determined by non-volatile memoryMTU is 1514 bytesHelper address is not ...

Oh Drother · 04-17-2020

Sure: R2#show ip int g1GigabitEthernet1 is up, line protocol is upInterface is unnumbered. Using address of Loopback101 (2.2.2.2)Broadcast address is 255.255.255.255MTU is 1500 bytesHelper address is not setDirected broadcast forwarding is disabledMu...

Oh Drother · 04-16-2020

Thanks so much for your thorough explanation and taking the time to go through this issue. Regarding the OSPF adjacency forming via different subnets - you are correct in assuming that is related to the ip unnumbered feature. If you're interested, RF...

Oh Drother · 04-16-2020

Of course: R2#show ip route | b GateGateway of last resort is not set1.0.0.0/32 is subnetted, 1 subnetsO 1.1.1.1 [110/2] via 1.1.1.1, 00:35:03, GigabitEthernet12.0.0.0/32 is subnetted, 1 subnetsC 2.2.2.2 is directly connected, Loopback1013.0.0.0/32 i...

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OSPF Peering Via IP Unnumbered Sourcing Loopback - Not Added In DB As A Type-7?

OSPF Type-5's preferring to be advertised from BDR in OSPF DB?

Final traceroute hop failing

Re: OSPF Type-5's preferring to be advertised from BDR in OSPF DB?

Re: Final traceroute hop failing

Re: Final traceroute hop failing

Re: Final traceroute hop failing

Re: Final traceroute hop failing