The following display examples are from Transit Router 2. Displays are shown for the show mpls rsvp session and show mpls rsvp session detail commands.
As for Transit Router 2, the displays show an Ingress Detour (DI) path, and a path without a code which identifies a protected path. In addition, a Merged Detour (DM) path is shown. The DM path is the detour path merged from Transit Router 6. All three paths are shown from Ingress Router 4 at Loopback IP address 10.4.4.4 to Egress Router 5 at Loopback IP address 10.5.5.5.
device1# show mpls rsvp session
Codes: DI:Ingress Detour DT:Transit Detour DM:Merged Detour
DE:Egress Detour RP:Repaired Session
Ingress RSVP: 0 session(s)
Transit RSVP: 1 session(s)
To From St Style Lbl_in Lbl_out LSPname
10.5.5.5 10.4.4.4(DI) Up SE 1024 1024 1
10.5.5.5 10.4.4.4 Up SE 1024 1024 1
10.5.5.5 10.4.4.4(DM) Up SE 1025 1024 1
Egress RSVP: 0 session(s)
The following example displays the output from Transit Router 2 using the show mpls rsvp session detail command. This command provides additional details about the paths described in the output from the show mpls rsvp session command.
For the DI path, two PLR and Avoid Node ID pairs are shown labeled [1] and [2]. In [1] the Point of Local Repair (PLR) is at IP Address 10.18.18.1 which is the interface to the primary path on Transit Router 2 and the Avoid Node is IP address 10.18.18.2 on Transit Router 6. In [2] the Point of Local Repair (PLR) is at IP Address 10.19.19.2 on Transit Router 6 and the Avoid Node is IP address 0.0.0.0. The "Explicit path hop count" field indicates that there are four hops on this path from this router to the egress of the path at routers with the following IP addresses 10.13.13.1 (Ingress Router 4), 10.10.10.1 (Transit Router 3), 10.11.11.2 (Transit Router 1) and 10.15.15.2 (Egress Router 5).
For the DM path, one PLR and Avoid Node ID pair is shown labeled [1]. In [1] the Point of Local Repair (PLR) is at IP Address 10.19.19.2 which is an interface on Transit Router 6 and the Avoid Node is IP address 0.0.0.0.
For the primary path, the "Explicit path hop count" field indicates that the path has two hops from this router to the egress to the path at routers with the following IP addresses 10.18.18.2 (Transit Router 6) and 10.19.19.1 (Egress Router 5). The 'Fast Reroute' field indicates that the primary path has been configured for one-to-one backup.
device2# show mpls rsvp session detail
Codes: DI:Ingress Detour DT:Transit Detour DM:Merged Detour
DE:Egress Detour RP:Repaired Session
Ingress RSVP: 0 session(s)
Transit RSVP: 1 session(s)
To From St Style Lbl_in Lbl_out LSPname
10.5.5.5 10.4.4.4(DI) Up SE 1024 1024 1
Time left in seconds (PATH refresh: 1, ttd: 4293570
RESV refresh: 13, ttd: 141)
Tspec: peak 0 kbps rate 0 kbps size 0 bytes m 20 M 1500
Explicit path hop count: 4
10.13.13.1 (S) -> 10.10.10.1 (S) -> 10.11.11.2 (S) -> 10.15.15.2 (S)
Received RRO count: 4
Protection codes: P: Local N: Node B: Bandwidth I: InUse
10.13.13.1 -> 10.10.10.1 -> 10.11.11.2 ->
10.15.15.2
Detour Sent: Number of PLR and Avoid Node ID pair(s): 2
[1]: PLR: 10.18.18.1 Avoid Node: 10.18.18.2
[2]: PLR: 10.19.19.2 Avoid Node: 0.0.0.0
PATH sentto: 10.13.13.1 (e5/10 ) (MD5 OFF)
RESV rcvfrom: 10.13.13.1 (e5/10 ) (MD5 OFF)
To From St Style Lbl_in Lbl_out LSPname
10.5.5.5 10.4.4.4 Up SE 1024 1024 1
Time left in seconds (PATH refresh: 26, ttd: 151
RESV refresh: 13, ttd: 151)
Tspec: peak 0 kbps rate 0 kbps size 0 bytes m 20 M 1500
Fast Reroute: one-to-one backup desired
Setup priority: 7, hold priority: 0
Bandwidth: 0 kbps, hop limit: 255
Detour LSP: UP. Nexthop (node) protection available.
Up/Down times: 1, num retries: 0
Explicit path hop count: 2
10.18.18.2 (S) -> 10.19.19.1 (S)
Received RRO count: 2
Protection codes: P: Local N: Node B: Bandwidth I: InUse
10.18.18.2 (PN) -> 10.19.19.1
PATH rcvfrom: 10.13.13.1 (e5/10 ) (MD5 OFF)
PATH sentto: 10.18.18.2 (e2/1 ) (MD5 OFF)
RESV rcvfrom: 10.18.18.2 (e2/1 ) (MD5 OFF)
To From St Style Lbl_in Lbl_out LSPname
10.5.5.5 10.4.4.4(DM) Up SE 1025 1024 1
Time left in seconds (PATH refresh: 31, ttd: 133
RESV refresh: 13, ttd: 141)
Tspec: peak 0 kbps rate 0 kbps size 0 bytes m 20 M 1500
Received RRO count: 4
Protection codes: P: Local N: Node B: Bandwidth I: InUse
10.13.13.1 -> 10.10.10.1 -> 10.11.11.2 ->
10.15.15.2
Detour Rcvd: Number of PLR and Avoid Node ID pair(s): 1
[1]: PLR: 10.19.19.2 Avoid Node: 0.0.0.0
PATH rcvfrom: 10.18.18.2 (e2/1 ) (MD5 OFF)
RESV rcvfrom: 10.13.13.1 (e5/10 ) (MD5 OFF)
Egress RSVP: 0 session(s)