3com S7906E 참조 가이드

 

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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. 

Use the tracert lsp command to locate an MPLS LSP error. 

# 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 

MPLS view 

2: System level 

None 

Use the ttl expiration pop command to specify that ICMP responses travel along the IP route when the 

TTL of an MPLS packet expires.