R3303-HP HSR6800 Routers MPLS Command Reference

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Parameters
-a source-ip: Specifies the source IP address for the echo request messages.
-exp exp-value: Specifies the EXP value for the echo request messages. The value range for the exp-value
argument is 0 to 7, and the default is 0.
-h ttl-value: Specifies the maximum TTL value for the echo request messages. The value range for the
ttl-value argument is 1 to 255, and the default is 30.
-r reply-mode: Specifies the reply mode of the receiver in response to the echo request messages. The
reply-mode argument can be 1 or 2, where 1 means "Do not respond" and 2 means "Respond using a
UDP packet." The default is 2.
-t time-out: Specifies the timeout interval for the response to an echo request message. The value range
for the time-out argument is 0 to 65535 milliseconds, and the default is 2000 milliseconds.
ipv4 dest-addr mask-length: Specifies a FEC by an IPv4 destination address and the mask length. The
value range for the mask-length argument is 0 to 32.
destination-ip-addr-header: Specifies the destination address in the IP header of the MPLS echo request
messages. It can be any address on subnet 127.0.0.0/8—any local loopback address.
Examples
# Locate errors along the LSP to 3.3.3.9/32.
<Sysname> tracert lsp ipv4 3.3.3.9 32
LSP Trace Route FEC: 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 enable
Use ttl expiration enable to enable the device to send back an ICMP TTL exceeded message when it
receives an MPLS TTL expired packet.
Use undo ttl expiration enable to disable sending back of ICMP TTL exceeded messages for MPLS TTL
expired messages.
Syntax
ttl expiration enable
undo ttl expiration enable
Default
This function is enabled.
Views
MPLS view
Default command level
2: System level