Ingress And Egress Pw Statistics - Alcatel-Lucent 7450 Quality Of Service Manual
Ethernet service switch; service router; extensible routing system
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- Manual (816 pages) ,
- Configuration manual (778 pages) ,
- Basic system configuration manual (576 pages)
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A:PE1#
Ingress and Egress PW Statistics
The PW forwarded packet and octet statistics (SDP binding statistics) are currently supported
for both ingress and egress and are available via show command, monitor command, and
accounting file. These statistics consist of the ingress-forwarded and ingress-dropped packet
and octet counters, as well as the egress-forwarded packet and octet counters. However, they
do not include discards in the ingress network queues. The latter are counted in the stats of
the queues defined in the network-queue policy applied to the ingress of the MDA/FP.
The ingress and egress SDP binding stats do not count the label stack of the PW packet but
count the PW Control Word (CW) if included in the packet.
With the introduction of the PW shaping feature—the ingress or egress queue-group
policer—a PW FC is redirected to also provide packet and octet forwarded and dropped-
statistics by means of the show command, monitor command, and accounting file of the
ingress or egress queue-group instance.
Similar to the SDP binding stats, the ingress policer stats for a spoke-SDP does not count the
label stack. When the spoke-SDP is part of a L2-service, they will count the L2-
encapsulation, minus CRC and VLAN tag if popped out, and they also count the PW CW, if
included in the packet. When the spoke-SDP is part of a L3-service, the policer stats only
count the IP payload and do not count the PW CW. Unlike the ingress SDP binding stats, if
the user enables the packet-byte-offset {add bytes | subtract bytes} option under the queue-
group policer, then the policer stats reflect the adjusted packet size in both L2 and L3-spoke-
SDPs.
The egress queue-group policer and/or queue counts the full label stack of the PW packet
including the CW. If the user enables the packet-byte-offset {add bytes | subtract bytes}
option under the queue-group policer and queue-group queue, then the policer and queue stats
reflect the adjusted packet size.
The SDP binding and queue-group statistics does however remain separate as one or more
PWs can have FCs redirected to the same policer ID in the queue-group instance.
Quality of Service Guide
: 5
Queue Sharing and Redirection
460
417
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