Foundry NetIron M2404C and M2404F Metro Access Switches
Configuring Interfaces (Rev. 03)
Fast Ethernet and Giga Ethernet Port
© 2008 Foundry Networks, Inc.
Page 18 of 57
Table 5: The Counters Displayed by the
show interface statistics extended
Command
Counter
Description
InOctets
This counter is incremented once for every data octet of all received
packets. This includes data octets of rejected and local packets that are not
forwarded to the switching core for transmission. This counter should
reflect all the data octets received on the line.
For oversized packets, the exceeded allocated buffer-size, only buffer-size
bytes are counted and all the rest of the bytes are not.
InUcastPkts
This counter is incremented once for every good unicast packet (not
including Multicast and Broadcast packets) received.
InNUcastPkts
This counter is incremented once for every good Broadcast and Multicast
packet received.
InDiscards
This counter is incremented for every packet discarded due to
backpressure or a “global buffer memory full” condition. Packets are
aborted during transmission
.
InErrors
This counter is incremented when any of the following events occurs:
1.
Undersized frames (less than 64 bytes for untagged frames or less
than 68 bytes for tagged frames), which are correctly aligned and well
formed without Frame Check Sequence (FCS) Errors.
2.
Fragments (less than 64 bytes for untagged frames or less than 68
bytes for tagged frames), which are misaligned and/or with Frame
Check Sequence (FCS) Errors.
3.
Oversized frames (more than 1518 bytes for untagged frames or more
than 1522 bytes for tagged frames), which are without FCS errors.
4.
Jabber frames (more than 1518 bytes for untagged frames or more
than 1522 bytes for tagged frames), which have FCS errors.
5.
CRC errors.
6.
Fragments and Runts - when the interface goes down while receiving
traffic.
7.
Increment in InDiscards counter.
InUnknownProtos
Not supported.
OutOctets
This counter is incremented once for every data octet of a transmitted
good packet.
OutUcastPkts
This counter is incremented once for every transmitted good Unicast
packet (not include Multicast and Broadcast packets).
OutNUcastPkts
This counter is incremented once for every transmitted good Broadcast
and Multicast packet.
OutDiscards
Not supported.
OutErrors
Not supported.
Clearing Interface Statistics
Table 6
lists the Fast Ethernet and Giga Ethernet interfaces commands for clearing the interfaces
statistics.