Verifying the IP and IGP Layers

This chapter describes how to check the Internet Protocol (IP) and interior gateway protocol (IGP) layers of the layered Multiprotocol Label Switching (MPLS) model. (See Table 15.)

Table 15: Checklist for Verifying the IP and IGP Layers

Verifying the IP and IGP Layer Tasks	Command or Action
Verifying the IP and IGP Layers
Verifying the IP Layer
Verify the LSP	show mpls lsp extensive
Verify IP Addressing	show interfaces terse
Verify Neighbors or Adjacencies at the IP Layer	show ospf neighbor extensive show isis adjacency extensive
Take Appropriate Action	The following sequence of commands addresses the specific problem described in this section: [edit interfaces so-0/0/2] show rename unit 0 family inet address 10.1.13.2/30 to address      10.1.13.1/30 show commit
Verify the LSP Again	show mpls lsp extensive
Verifying the OSPF Protocol
Verify the LSP	show mpls lsp extensive
Verify OSPF Interfaces	show ospf interface
Verify OSPF Neighbors	show ospf neighbor
Verify the OSPF Protocol Configuration	show configuration protocols ospf
Take Appropriate Action	The following sequence of commands addresses the specific problem described in this section: [edit] edit protocols ospf area 0.0.0.0 [edit protocols ospf area 0.0.0.0] set interface lo0 set interface lo0 passive up [edit protocols ospf] set traffic-engineering show commit
Verify the LSP Again	show mpls lsp extensive
Verifying the IS-IS Protocol
Verify the LSP	show mpls lsp extensive
Verify IS-IS Adjacencies and Interfaces	show isis adjacency show isis interface
Verify the IS-IS Configuration	show configuration protocols isis
Take Appropriate Action	The following sequence of commands addresses the specific problem described in this section: edit [edit] edit protocols isis [edit protocols isis] show delete level 2 set level 1 disable show commit run show isis adjacency
Verify the LSP Again	show mpls lsp extensive