3com S7906E Guía De Referencia
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-exp exp-value: Specifies the EXP value for the echo request messages. The exp-value argument
ranges from 0 to 7.
-h ttl-value: Specifies the TTL value for the echo request messages. The ttl-value argument ranges from
1 to 255.
-r reply-mode: Specifies the reply mode in response to an echo request message. The reply-mode
argument can be 1 or 2. A value of 1 means “Do not response”, while a value of 2 means “Respond
using a UDP packet”.
-t time-out: Specifies the timeout interval for the response to an echo request message. The time-out
argument ranges from 0 to 65535 milliseconds.
ipv4 dest-addr mask: Specifies the LDP IPv4 destination address and the mask. The mask argument
ranges from 0 to 32.
destination-ip-addr-header: Specifies the IP header destination address for the MPLS echo request
messages. It can be any address on segment 127.0.0.0/8, that is, any local loopback address.
Description
Use the tracert lsp command to locate an MPLS LSP error.
Examples
# Locate an error along the LSP to 3.3.3.9 on host 1.1.1.1.
<Sysname> tracert lsp ipv4 3.3.3.9 32
LSP Trace Route FEC: LDP IPV4 PREFIX 3.3.3.9/32 , press CTRL_C to break.
TTL Replier Time Type Downstream
0 Ingress 10.4.5.1/[1025]
1 10.4.5.1 1 Transit 100.3.4.1/[1024]
2 100.1.4.2 63 Transit 100.1.2.1/[3]
3 100.1.2.1 129 Egress
ttl expiration pop
Syntax
ttl expiration pop
undo ttl expiration pop
View
MPLS view
Default Level
2: System level
Parameters
None
Description
Use the ttl expiration pop command to specify that ICMP responses travel along the IP route when the
TTL of an MPLS packet expires.