Alcatel-Lucent 7750 SR OS Service Manual page 1438

OAM and SAA Command Reference
interval interval — The interval parameter in seconds, expressed as a decimal integer. This
count send-count — The number of messages to send, expressed as a decimal integer. The count
timeout timeout — The timeout parameter in seconds, expressed as a decimal integer. This value is
mac-trace
Syntax mac-trace service service-id destination ieee-address [size octets] [min-ttl vc-label-ttl]
[max-ttl vc-label-ttl] [send-control] [return-control] [source ieee-address] [probe-count
probes-per-hop] [interval interval] [timeout timeout]
Context <GLOBAL>
config>saa>test>type
Description
Displays the hop-by-hop path for a destination MAC address within a VPLS.
The MAC traceroute operation is modeled after the IP traceroute utility which uses ICMP echo
request and reply packets with increasing TTL values to determine the hop-by-hop route to a
destination IP. The MAC traceroute command uses Alcatel-Lucent OAM packets with increasing
TTL values to determine the hop-by-hop route to a destination MAC.
In a MAC traceroute, the originating device creates a MAC ping echo request packet for the MAC to
be tested with increasing values of the TTL. The echo request packet is sent through the control plane
or data plane and awaits a TTL exceeded response or the echo reply packet from the device with the
destination MAC. The devices that reply to the echo request packets with the TTL exceeded and the
echo reply are displayed.
When a source ieee-address value is specified and the source MAC address is locally registered
within a split horizon group (SHG), then this SHG membership will be used as if the packet
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parameter is used to override the default request message send interval and defines the minimum
amount of time that must expire before the next message request is sent.
If the interval is set to 1 second where the timeout value is set to 10 seconds, then the maximum
time between message requests is 10 seconds and the minimum is 1 second. This depends upon
the receipt of a message reply corresponding to the outstanding message request.
Default
1
Values
1 — 10
parameter is used to override the default number of message requests sent. Each message request
must either timeout or receive a reply before the next message request is sent. The message
interval value must be expired before the next message request is sent.
Default
1
Values
1 — 100
used to override the default timeout value and is the amount of time that the router will wait for
a message reply after sending the message request. Upon the expiration of message timeout, the
requesting router assumes that the message response will not be received. Any response received
after the request times out will be silently discarded.
Default
5
Values
1 — 10
7750 SR OS Services Guide