Ttl Expiration - H3C MSR 20-20 Command Reference Manual

Description
Example

ttl expiration

Syntax
View
Parameter
Description
-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 65,535 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 message, which can be any address on segment 127.0.0.0/8,
that is, any local loopback address.
te interface-type interface-number: Specifies a tunnel interface by its type and
number.
Use the command to locate an MPLS LSP error.
tracert lsp
# 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
0
1 10.4.5.1
2 100.1.4.2
3 100.1.2.1
ttl expiration pop
undo ttl expiration pop
MPLS view
None
Use the
ttl expiration pop
message be transported back along the IP route when the TTL of an MPLS packet
expires.
Use the undo ttl expiration pop
be transported back along the LSP when the TTL of an MPLS packet expires.
By default, the ICMP response message of an MPLS packet with a one-level label is
transported back along the IP route.
Note that configuring the undo mpls command will remove the configuration of
the ttl expiration pop command.
Time Type Downstream
Ingress 10.4.5.1/[1025]
1 Transit 100.3.4.1/[1024]
63 Transit 100.1.2.1/[3]
129 Egress
command to specify that the ICMP response
command to specify that the ICMP response
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