To verify the configuration of BFD triggered FRR, use the show commands as shown in the following examples.
- show mpls traffic-eng tunnels brief
- show ip rsvp sender detail
- show mpls traffic-eng fast-reroute database
- show mpls traffic-eng tunnels backup
- show ip rsvp reservation detail
- show ip rsvp hello
- show ip rsvp interface detail
- show ip rsvp hello bfd nbr
- show ip rsvp hello bfd nbr detail
- show ip rsvp hello bfd nbr summary
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Use the following command to verify whether or not the backup tunnels are up:
Router# show mpls traffic-eng tunnels brief
Signalling Summary:
LSP Tunnels Process: running
RSVP Process: running
Forwarding: enabled
Periodic reoptimization: every 3600 seconds, next in 1706 seconds
TUNNEL NAME DESTINATION UP IF DOWN IF STATE/PROT
Router_t1 10.112.0.12 - Gi4/0/1 up/up
Router_t2 10.112.0.12 - unknown up/down
Router_t3 10.112.0.12 - unknown admin-down
Router_t1000 10.110.0.10 - unknown up/down
Router_t2000 10.110.0.10 - Gi4/0/1 up/up
Displayed 5 (of 5) heads, 0 (of 0) midpoints, 0 (of 0) tails
Use the following command to verify whether the LSPs are protected by the appropriate backup tunnels.
Router# show ip rsvp sender detail
PATH:
Tun Dest: 10.10.0.6 Tun ID: 100 Ext Tun ID: 10.10.0.1
Tun Sender: 10.10.0.1 LSP ID: 31
Path refreshes:
arriving: from PHOP 10.10.7.1 on Et0/0 every 30000 msecs
Session Attr:
Setup Prio: 7, Holding Prio: 7
Flags: (0x7) Local Prot desired, Label Recording, SE Style
session Name: R1_t100
ERO: (incoming)
10.10.7.2 (Strict IPv4 Prefix, 8 bytes, /32)
10.10.0.6 (Strict IPv4 Prefix, 8 bytes, /32)
RRO:
10.10.7.1/32, Flags:0x0 (No Local Protection)
10.10.4.1/32, Flags:0x9 (Local Prot Avail/to NNHOP) !Available to NNHOP
10.10.1.1/32, Flags:0x0 (No Local Protection)
Traffic params - Rate: 10K bits/sec, Max. burst: 1K bytes
Min Policed Unit: 0 bytes, Max Pkt Size 4294967295 bytes
Fast-Reroute Backup info:
Inbound FRR: Not active
Outbound FRR: No backup tunnel selected
Path ID handle: 50000416.
Incoming policy: Accepted. Policy source(s): MPLS/TE
Status: Proxy-terminated
Use the following command to verify whether the LSPs are protected:
Router# show mpls traffic-eng fast-reroute database
Tunnel head end item frr information:
Protected tunnel In-label Out intf/label FRR intf/label Status
Tunnel500 Tun hd AT4/0.100:Untagg Tu501:20 ready
Prefix item frr information:
Prefix Tunnel In-label Out intf/label FRR intf/label Status
10.0.0.8/32 Tu500 18 AT4/0.100:Pop ta Tu501:20 ready
10.0.8.8/32 Tu500 19 AT4/0.100:Untagg Tu501:20 ready
10.8.9.0/24 Tu500 22 AT4/0.100:Untagg Tu501:20 ready
LSP midpoint item frr information:
LSP identifier In-label Out intf/label FRR intf/label Status
Use the following command to verify the backup tunnel information.
Router# show mpls traffic-eng tunnels backup
Router_t578
LSP Head, Tunnel578, Admin: up, Oper: up
Src 10.55.55.55, Dest 10.88.88.88, Instance 1
Fast Reroute Backup Provided:
Protected i/fs: PO1/0, PO1/1, PO3/3
Protected lsps: 1
Backup BW: any pool unlimited; inuse: 100 kbps
Router_t5710
LSP Head, Tunnel5710, Admin: admin-down, Oper: down
Src 10.55.55.55, Dest 10.7.7.7, Instance 0
Fast Reroute Backup Provided:
Protected i/fs: PO1/1
Protected lsps: 0
Backup BW: any pool unlimited; inuse: 0 kbps
Router_t5711
LSP Head, Tunnel5711, Admin: up, Oper: up
Src 10.55.55.55, Dest 10.7.7.7, Instance 1
Fast Reroute Backup Provided:
Protected i/fs: PO1/0
Protected lsps: 2
Backup BW: any pool unlimited; inuse: 6010 kbps
Use the following command to verify detailed RSVP-related receiver information currently in the database.
Router# show ip rsvp reservation detail
Reservation:
Tun Dest: 10.1.1.1 Tun ID: 1 Ext Tun ID: 10.1.1.1
Tun Sender: 10.1.1.1 LSP ID: 104
Next Hop: 10.1.1.2 on Gi1/0
Label: 18 (outgoing)
Reservation Style is Shared-Explicit, QoS Service is Controlled-Load
Average Bitrate is 0 bits/sec, Maximum Burst is 1K bytes
Min Policed Unit: 0 bytes, Max Pkt Size: 0 bytes
RRO:
10.1.1.1/32, Flags:0x1 (Local Prot Avail/to NHOP)
Label subobject: Flags 0x1, C-Type 1, Label 18
10.1.1.1/32, Flags:0x0 (Local Prot Avail/In Use/Has BW/to NHOP)
Label subobject: Flags 0x1, C-Type 1, Label 16
10.1.1.2/32, Flags:0x0 (No Local Protection)
Label subobject: Flags 0x1, C-Type 1, Label 0
Resv ID handle: CD000404.
Policy: Accepted. Policy source(s): MPLS/TE
Use this command to display hello status and statistics for FRR, reroute (hello state timer), and graceful restart.
Router# show ip rsvp hello
Hello:
RSVP Hello for Fast-Reroute/Reroute: Enabled
Statistics: Disabled
BFD for Fast-Reroute/Reroute: Enabled
RSVP Hello for Graceful Restart: Disabled
Use this command to display the interface configuration for Hello.
Router# show ip rsvp interface detail
Gi9/47:
RSVP: Enabled
Interface State: Up
Bandwidth:
Curr allocated: 0 bits/sec
Max. allowed (total): 0 bits/sec
Max. allowed (per flow): 0 bits/sec
Max. allowed for LSP tunnels using sub-pools (pool 1): 0 bits/sec
Set aside by policy (total): 0 bits/sec
Signalling:
DSCP value used in RSVP msgs: 0x3F
Number of refresh intervals to enforce blockade state: 4
Authentication: disabled
Key chain: <none>
Type: md5
Window size: 1
Challenge: disabled
FRR Extension:
Backup Path: Configured (or "Not Configured")
BFD Extension:
State: Disabled
Interval: Not Configured
RSVP Hello Extension:
State: Disabled
Refresh Interval: FRR: 200 , Reroute: 2000
Missed Acks: FRR: 4 , Reroute: 4
DSCP in HELLOs: FRR: 0x30 , Reroute: 0x30
Use this command to display information about all MPLS traffic engineering link and node protected neighbors that use the
BFD protocol.
Router# show ip rsvp hello bfd nbr
Client Neighbor I/F State LostCnt LSPs
FRR 10.0.0.6 Gi9/47 Up 0 1
Use this command to display detailed information about all MPLS traffic engineering link and node protected neighbors that
use the BFD protocol:
Router# show ip rsvp hello bfd nbr detail
Hello Client Neighbors
Remote addr 10.0.0.6, Local addr 10.0.0.7
Type: Active
I/F: Gi9/47
State: Up (for 00:09:41)
Clients: FRR
LSPs protecting: 1 (frr: 1, hst upstream: 0 hst downstream: 0)
Communication with neighbor lost: 0
Use this command to display summarized information about all MPLS traffic engineering link and node protected neighbors that
use the BFD protocol.
Router# show ip rsvp hello bfd nbr summary
Client Neighbor I/F State LostCnt LSPs
FRR 10.0.0.6 Gi9/47 Up 0 1