Zte ZXR10 ZSR V2 Configuration Manual (System Management page 164

ZXR10 ZSR V2 Configuration Guide (System Management)
3. When the packet reaches the destination device, the destination device responds
with a UDP Echo Reply packet whose port number is 3503.
To prevent IP packets from being forwarded when an IP path is operating properly
but an LSP is disconnected, the value of the IP TTL field in an LSP ping Echo
Request packet is set to 1, and the destination address of the packet is set to
an address in the 127.0.0.0/8 segment. LSRs do not forward such an IP packet
without an MPLS label.
An LSP is unidirectional. An LSP ping Echo Request packet is only forwarded along
the LSP to be tested. The corresponding Echo Reply packet only sends necessary
information to the source, and it does not need to go along the same path as that of
the Echo Request packet. The reply packet can also be an IP packet without a label.
The path of an MPLS Echo Request packet of LSP ping and that of the corresponding
Echo Reply packet may be different. The destination address and destination port of
the Echo Reply packet are the source address and source port of the Echo Request
packet respectively.
Configuration Commands
To configure LSP ping on the ZXR10 ZSR V2, run the following commands:
Command
ping mpls ipv4 <ip-address><mask-length
ZXR10#
>[output-interface <interface-name>][destination
<start-ipv4-address>[<end-ipv4-address>][<increment>]][repeat
<repeat-count>| size <datagrame-size>| timeout <timeout>| source
{<source-ipv4-address>|<source-ipv6-address>}| ttl <ttl>]
ping mpls traffic-eng te_tunnel<id>[{master|slave}][repeat
ZXR10#
<repeat-count>| size <datagrame-size>| timeout <timeout>| source
{<source-ipv4-address>|<source-ipv6-address>}| ttl <ttl>]
ping mpls pseudowire [multisegment]<pw-name>[repeat
ZXR10#
<repeat-count>| size <datagrame-size>| timeout <timeout>| source
{<source-ipv4-address>|<source-ipv6-address>}| ttl <ttl>]
<repeat-count>: number of retry attempts, range: 1–65535, default: 5.
<datagram-size>: LSP ping packet size, range: 100-1500, unit: byte, default: 120.
<timeout>: timeout period, unit: second, range: 1–20, default: 2.
master : specifies that the master LSP sends LSP ping packets.
slave : specifies that the slave LSP sends LSP ping packets.
multisegment: enables the ping multisegment pseudowire function.
Maintenance Commands
To maintain LSP ping on the ZXR10 ZSR V2, run the following command:
SJ-20140504150128-007|2014-05-10 (R1.0)
15-16
ZTE Proprietary and Confidential
Function
Configures IPv4 LDP LSP ping.
Configures RSVP LSP ping.
Configures PWE3 LSP ping.