CLI Reference Guide-R04

Chapter 27 | CFM Commands
Loopback Operations
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Loopback Operations
ethernet cfm
loopback
This command sends CFM loopback messages to a MAC address for a MEP or MIP.
Syntax
ethernet cfm loopback {dest-mep destination-mpid | src-mep source-mpid
{dest-mep destination-mpid | mac-address} | mac-address} md domain-name
ma ma-name [count transmit-count] [size packet-size]
destination-mpid – The identifier of a MEP that is the target of the loopback
message. (Range: 1-8191)
source-mpid – The identifier of a source MEP that will send the loopback
message. (Range: 1-8191)
mac-address – MAC address of the remote maintenance point that is the
target of the loopback message. This address can be entered in either of
the following formats: xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx
domain-name – Domain name. (Range: 1-43 alphanumeric characters)
ma-name – Maintenance association name. (Range: 1-43 alphanumeric
characters)
transmit-count – The number of times the loopback message is sent.
(Range: 1-1024)
Ing. Action Action taken on the ingress port:
IngOk – The target data frame passed through to the MAC Relay Entity.
IngDown – The bridge port’s MAC_Operational parameter is false. This
value could be returned, for example, by an operationally Down MEP that
has another Down MEP at a higher MD level on the same bridge port that
is causing the bridge port’s MAC_Operational parameter to be false.
IngBlocked – The ingress port can be identified, but the target data frame
was not forwarded when received on this port due to active topology
management, i.e., the bridge port is not in the forwarding state.
IngVid – The ingress port is not in the member set of the LTM’s VIDs, and
ingress filtering is enabled, so the target data frame was filtered by ingress
filtering.
Egr. Action Action taken on the egress port:
EgrOk – The targeted data frame was forwarded.
EgrDown – The Egress Port can be identified, but that bridge port’s
MAC_Operational parameter is false.
EgrBlocked – The egress port can be identified, but the data frame was not
passed through the egress port due to active topology management, i.e.,
the bridge port is not in the forwarding state.
EgrVid – The Egress Port can be identified, but the bridge port is not in the
LTM’s VID member set, and was therefore filtered by egress filtering.
Relay Relay action:
FDB – Target address found in forwarding database.
MPDB – Target address found in the maintenance point database.
HIT – Target located on this device.
Table 159: show ethernet cfm linktrace-cache - display description (Continued)
Field Description