The following configuration example shows how to specify the SRLG value of each link that has a shared risk with another link:
config t
srlg
interface POS0/4/0/0
value 10
value 11
|
interface POS0/4/0/1
value 10
|
The following example shows the SRLG values configured on a specific link.
RP/0/RP0/CPU0:router# show mpls traffic-eng topology brief
My_System_id: 100.0.0.2 (OSPF 0 area 0)
My_System_id: 0000.0000.0002.00 (IS-IS 1 level-1)
My_System_id: 0000.0000.0002.00 (IS-IS 1 level-2)
My_BC_Model_Type: RDM
Signalling error holddown: 10 sec Global Link Generation 389225
IGP Id: 0000.0000.0002.00, MPLS TE Id: 100.0.0.2 Router Node (IS-IS 1 level-1)
IGP Id: 0000.0000.0002.00, MPLS TE Id: 100.0.0.2 Router Node (IS-IS 1 level-2)
Link[1]:Broadcast, DR:0000.0000.0002.07, Nbr Node Id:21, gen:389193
Frag Id:0, Intf Address:51.2.3.2, Intf Id:0
Nbr Intf Address:51.2.3.2, Nbr Intf Id:0
TE Metric:10, IGP Metric:10, Attribute Flags:0x0
Attribute Names:
SRLGs: 1, 4, 5
Switching Capability:, Encoding:
BC Model ID:RDM
Physical BW:1000000 (kbps), Max Reservable BW Global:10000 (kbps)
Max Reservable BW Sub:10000 (kbps)
The following example shows the configured tunnels and associated SRLG values.
RP/0/RP0/CPU0:router# show mpls traffic-eng tunnels
<snip>
Signalling Summary:
LSP Tunnels Process: running
RSVP Process: running
Forwarding: enabled
Periodic reoptimization: every 3600 seconds, next in 1363 seconds
Periodic FRR Promotion: every 300 seconds, next in 181 seconds
Auto-bw enabled tunnels: 0 (disabled)
Name: tunnel-te1 Destination: 100.0.0.3
Status:
Admin: up Oper: up Path: valid Signalling: recovered
path option 1, type explicit path123 (Basis for Setup, path weight 2)
OSPF 0 area 0
G-PID: 0x0800 (derived from egress interface properties)
SRLGs excluded: 2,3,4,5
6,7,8,9
Bandwidth Requested: 0 kbps CT0
<snip>
The following example shows all the interfaces associated with SRLG.
RP/0/RP0/CPU0:router# show mpls traffic-eng topo srlg
My_System_id: 100.0.0.5 (OSPF 0 area 0)
My_System_id: 0000.0000.0005.00 (IS-IS 1 level-2)
My_System_id: 0000.0000.0005.00 (IS-IS ISIS-instance-123 level-2)
SRLG Interface Addr TE Router ID IGP Area ID
__________ ______________ ____________ _______________
10 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2
11 50.2.3.3 100.0.0.3 IS-IS 1 level-2
12 50.2.3.3 100.0.0.3 IS-IS 1 level-2
30 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2
77 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2
88 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2
1500 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2
10000000 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2
4294967290 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2
4294967295 50.4.5.5 100.0.0.5 IS-IS ISIS-instance-123 level-2
The following example shows the NHOP and NNHOP backup tunnels with excluded SRLG values.
RP/0/RP0/CPU0:router# show mpls traffic-eng topology path dest 100.0.0.5 exclude-srlg ipaddr
Path Setup to 100.0.0.2:
bw 0 (CT0), min_bw 0, metric: 30
setup_pri 7, hold_pri 7
affinity_bits 0x0, affinity_mask 0xffff
Exclude SRLG Intf Addr : 50.4.5.5
SRLGs Excluded : 10, 30, 1500, 10000000, 4294967290, 4294967295
Hop0:50.5.1.5
Hop1:50.5.1.1
Hop2:50.1.3.1
Hop3:50.1.3.3
Hop4:50.2.3.3
Hop5:50.2.3.2
Hop6:100.0.0.2
The following example shows an extract of explicit-path set to protect a specific interface.
RP/0/RP0/CPU0:router#sh mpls traffic-eng topology path dest 10.0.0.5 explicit-path name name
Path Setup to 100.0.0.5:
bw 0 (CT0), min_bw 9999, metric: 2
setup_pri 7, hold_pri 7
affinity_bits 0x0, affinity_mask 0xffff
SRLGs Excluded: 10, 30, 77, 88, 1500, 10000000
4294967290, 4294967295
Hop0:50.3.4.3
Hop1:50.3.4.4
Hop2:50.4.5.4
Hop3:50.4.5.5
Hop4:100.0.0.5