Routing

Dears

Hope you are doing great.

Need your assistace please regarding below command

R1> show ospf route router
Topology default Route Table:

Prefix Path Route NH Metric NextHop Nexthop
Type Type Type Interface Address/LSP
10.0.0.0/24 Intra Router IP 5100 ae10.0 1.1.1.1
11.0.0.0/24 Intra AS BR IP 5100 ae2.0 2.2.2.2
12.0.0.0/24 Intra Network IP 5101 ae3.0 3.3.3.3
13.0.0.0/32 Ext1 Network IP 1050 ae4.0 4.4.4.4

Intra should be intra (level-1/level-2) LSA and Ext should be level-5 LSA

However what does "Rotuer" , " Network" means ??  It can't be level-1 / level-2 as Ext1 is with Network

Many Thanks for your assistance

Best Regards

Sherif Ismail

First of all, there is no level-1/level-2 in OSPF, only in IS-IS. 🙂 

Back to your question:

(1) The Path Type is either Intra (type-1/2 LSAs), Inter (type-3 LSAs) or Ext1/2 (type-5/7 LSAs - depending on the metric type)

(2) The Route type is either AS BR (AS boundary router), Area BR (ABR), Area/AS BR (both ASBR and ABR at the same time), Router (neither an Area BR nor an AS BR), Network which are those prefixes within the type-1 LSAs that have link type 3 (stub network), i.e. all those interfaces that have no OSPF neighbor (= other than p2p or transit).

Cheers,

Carsten

Thanks Carsten for your reply

For ISIS levels yes it was a mistpe 🙂

One more thing why then Network appears with External (LSA-5) appears ?

Many thanks

Best Regards

Sherif Ismail