Alcatel-Lucent 7750 SR OS Service Manual page 1437

A mac-ping with data plane reply can only be initiated on nodes that can have an egress MAC
address binding. A node without a FIB and without any SAPs cannot have an egress MAC address
binding, so it is not a node where replies in the data plane will be trapped and sent up to the control
plane.
A control plane request is responded to via a control plane reply only.
By default, MAC OAM requests are sent with the system or chassis MAC address as the source
MAC. The source option allows overriding of the default source MAC for the request with a specific
MAC address.
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
originated from this SHG. In all other cases, SHG 0 (zero) will be used. Note that if the mac-trace is
originated from a non-zero SHG, such packets will not go out to the same SHG.
If EMG is enabled, mac-ping will return only the first SAP in each chain.
Parameters
service service-id — The service ID of the service to diagnose or manage.
destination ieee-address — The destination MAC address for the OAM MAC request.
size octets — The MAC OAM request packet size in octets, expressed as a decimal integer. The
request payload is padded to the specified size with a 6 byte PAD header and a byte payload of 0xAA
as necessary. If the octet size specified is less than the minimum packet, the minimum sized packet
necessary to send the request is used.
ttl vc-label-ttl — The TTL value in the VC label for the OAM MAC request, expressed as a decimal
send-control — Specifies the MAC OAM request be sent using the control plane instead of the data
return-control — Specifies the MAC OAM reply to a data plane MAC OAM request be sent using
source src-ieee-address — The source MAC address from which the OAM MAC request originates.
fc fc-name — The fc parameter is used to test the forwarding class of the MPLS echo request
7750 SR OS Services Guide
Values
1 — 2147483647
Default
No OAM packet padding.
Values
1 — 65535
integer.
Default
255
Values
1 — 255
plane.
Default
MAC OAM request sent using the data plane.
the control plane instead of the data plane.
Default
MAC OAM reply sent using the data plane.
By default, the system MAC address for the chassis is used.
Default
The system MAC address.
Values
Any unicast MAC value.
packets. The actual forwarding class encoding is controlled by the network egress LSP-EXP
mappings.
Values
be, l2, af, l1, h2, ef, h1, nc
OAM and SAA Command Reference
Page 1439