Cisco Cisco ONS 15454 M2 Multiservice Transport Platform (MSTP)
The total number of packets received that had a length
(excluding framing bits, but including FCS octets) of between
64 and 1518 octets, inclusive, but had either a bad FCS with
an integral number of octets (FCS Error) or a bad FCS with a
nonintegral number of octets (Alignment Error).
(excluding framing bits, but including FCS octets) of between
64 and 1518 octets, inclusive, but had either a bad FCS with
an integral number of octets (FCS Error) or a bad FCS with a
nonintegral number of octets (Alignment Error).
etherStatsCRCAlignErrors
In certain congestion scenarios in GE_XP and 10GE_XP cards, dropped packets are counted both in
ingress (IfIndiscards) and egress interface (IfOutDiscards) interface. As a result of this, some dropped
packets are counted twice. The dropped packets on ingress interface can be ignored under this scenario.
ingress (IfIndiscards) and egress interface (IfOutDiscards) interface. As a result of this, some dropped
packets are counted twice. The dropped packets on ingress interface can be ignored under this scenario.
Note
Ether Ports Utilization Window
The Utilization window shows the percentage of transmit (Tx) and receive (Rx) line bandwidth used by the Ethernet ports during
consecutive time segments. The Mode field displays the real-time mode status, such as 100 Full, which is the mode setting configured
on the E-Series port. However, if the E-Series port is set to autonegotiate the mode (Auto), this field shows the result of the link
negotiation between the E-Series and the peer Ethernet device attached directly to the E-Series port.
consecutive time segments. The Mode field displays the real-time mode status, such as 100 Full, which is the mode setting configured
on the E-Series port. However, if the E-Series port is set to autonegotiate the mode (Auto), this field shows the result of the link
negotiation between the E-Series and the peer Ethernet device attached directly to the E-Series port.
The Utilization window provides an Interval drop-down list that enables you to set time intervals of 1 minute, 15 minutes, 1 hour,
and 1 day. Line utilization is calculated with the following formulas:
and 1 day. Line utilization is calculated with the following formulas:
Rx = (inOctets + inPkts * 20) * 8 / 100% interval * maxBaseRate
Tx = (outOctets + outPkts * 20) * 8 / 100% interval * maxBaseRate
The interval is defined in seconds. The maxBaseRate is defined by raw bits per second in one direction for the Ethernet port (that is,
1 Gbps).
1 Gbps).
Ether Port History Window
The Ether Port History window lists past Ethernet statistics for the previous time intervals. Depending on the selected time interval,
the History window displays the statistics for each port for the number of previous time intervals as shown in the following table.
The parameters are defined in
the History window displays the statistics for each port for the number of previous time intervals as shown in the following table.
The parameters are defined in
.
Table 24: Ethernet History Statistics per Time Interval
Number of Previous Intervals Displayed
Time Interval
60
1 minute
32
15 minutes
24
1 hour
7
1 day (24 hours)
33