34-56
Cisco ME 3800X and 3600X Switch Software Configuration Guide
OL-23400-01
Chapter 34 Configuring MPLS, MPLS VPN, MPLS OAM, and EoMPLS
Configuring MPLS OAM and IP SLAs MPLS
To remove an IP SLAs operation, enter the no ip sla operation-number global configuration command.
This is an example of manually configuring an MPLS LSP ping operation:
Switch#
config t
Switch(config)#
ip sla 1
Switch(config-ip-sla)#
mpls lsp ping ipv4 192.168.1.4 255.255.255.255 lsp-selector
127.1.1.1
Switch(config-ip-sla-lspPing)#
secondary-frequency connection-loss 30
Switch(config-ip-sla-lspPing)#
secondary-frequency timeout 30
Switch(config-ip-sla-lspPing)#
exit
Switch(config)# ip
sla schedule 1 start-time now life forever
Switch(config)#
exit
Using LSP Tree Trace
LSP tree trace is the capability to trace through all possible paths of an LSP network between the ingress
and egress routers by using downstream mapping. You can manually configure tree trace using the trace
mpls multipath privileged EXEC command. You can use IP SLAs Health Monitor for (ECMP tree trace
by entering the path-discover command in auto IP SLA MPLS parameter configuration mode. VPN end
points are automatically discovered and ping or traceroute actions are automatically generated for each
provider edge router.
This section includes these configuration procedures:
•
Manually Setting LSP Tree Trace, page 34-56
•
Configuring ECMP IP SLAs Tree Trace, page 34-57
Manually Setting LSP Tree Trace
Beginning in privileged EXEC mode, follow these steps to manually set LSP tree trace:
Command
Purpose
Step 1
traceroute mpls multipath ipv4
destination-address destination-mask
[destination address-start address-end
increment] [exp exp-bits] [reply dscp
dscp-value] [reply mode {ipv4 |
router-alert}] [revision {1 | 2 | 3}]
[source source-address] [timeout
seconds] [ttl time-to-live] [verbose]
[revision tlv-revision-number]
[force-explicit-null] [output interface
interface-id [nexthop ip-address]] [flags
fec]
Configure LSP LDP IPv4 traceroute. The keywords have these meanings:
•
destination-address destination-mask—Specify the address and
network mask of the target FEC.
•
(Optional) destination address-start address-end increment —Enter
the destination 127 network address range.
•
(Optional) exp exp-bits—Specify the MPLS experimental field value
in the MPLS header for an echo reply. The range is from 0 to 7. The
default is 0.
•
(Optional) reply dscp dscp-value—Specify a specific class of
service (CoS) in an echo reply by providing a differentiated services
code point (DSCP) value.
