User's Manual

User’s Manual of SGS-5240 Series Managed Switch
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4.8.7.17 Show Link Trace Cache
Device Management > CFM > Show Link Trace Cache page is used to show information about link trace operations launched
from this device.
 Hops – The number hops taken to reach the target MEP.
 MA – Maintenance association name.
 IP/Alias – IP address or DNS alias of the target device’s CPU.
 Forwarded – Shows whether or not this link trace message was forwarded. A message is not forwarded if received by the
target MEP.
 Ingress MAC Address – MAC address of the ingress port on the target device.
 Egress MAC Address – MAC address of the egress port on the target device.
 Ingress 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.
 Egress 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.
 Reply – Reply action:
 FDB – Target address found in forwarding database.
 MPDB – Target address found in the maintenance point database.
 HIT – Target located on this device.
4.8.7.18 Show Fault Notification Generator
Device Management > CFM > Show Fault Notification Generator page is used to display configuration settings for the fault
notification generator.