Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 368)

344 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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traceroute mpls ldp
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traceroute mpls ldp
The LDP LSP traceroute command in the (enable) mode, sends and MPLS echo request from the
ingress to the egress LSR.
Syntax traceroute mpls ldp ip-address/mask-length [destination ip-address] [dsmap] [min-ttl
min-num] [max-ttl max-num] [reply-mode router-alert] [reply-tos num] [size bytes] [source
ip-address] [timeout msec] [nexthop ipv4 address]
Parameters ip-address/mask-length
The ldp ip-address/mask-length variable specifies the LDP IPv4 destination prefix and mask
length. If the mask-length is not specified, the default value is 32.
destination ip-address
The destination ip-address option specifies an IP address within the 127/8 subnet. The default
address is 127.0.0.1
dsmap
The dsmap option enables the Downstream (DS) mapping TLV in the echo request for
traceroute operation.
min-ttl min-num
The min-ttl min-num option specifies a minimum value in the min-num variable for the
outermost label intraceroute operation. The default minimum TTL value is one. Acceptable
values that can be configured are: 1 - 255.
max-ttl max-num
The max-ttl max-num option specifies a maximum value in the max-num variable for the
outermost label in traceroute operation. The default maximum TTL value is 30. Acceptable
values that can be configured are: 1 - 255.
reply-mode router-alert
The reply-mode router-alert option is used when the normal IP return path is unreliable. This
option indicates that the reply should be sent as an IPv4 UDP packet with the Router Alert
option. This option requires extra overhead processing at each LSR along the return path.
reply-tos num
The reply-tos num option specifies a TOS value between zero and 254 to be included in the
Reply-TOS-byte TLV. This value is copied to the IP header TOS byte of the echo reply. By default,
the reply-tos TLV is not included in the echo request.
NOTE
The last bit of the TOS byte is always zero.
size bytes
The size bytes option specifies that the size of the echo request including the label stack to be
sent will be the value of the variable bytes. The pad TLV is used to fill the echo request
message to the specified size. The minimum size is 92 bytes for an MPLS Echo request. The
maximum size is the size of the LSP MTU.
source ip-address