Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - PHYSICAL LAYER CONFIGURATION GUIDE 2010-09-24 Configuration Manual page 221

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Deferred—Number of packets that the router delayed sending because the line
was busy. In half duplex mode, a high number of deferrals means the link is very
busy with traffic from other stations. In full duplex mode, when the link is always
available for transmission, this number is zero.
No Carrier—Number of packets sent when carrier sense was unavailable
Collisions—Analysis of the collisions that occurred
Single—Number of packets sent after one collision
Multiple—Number of packets sent after multiple collisions
Late—Number of packets aborted during sending because of collisions after 64
bytes
Excessive—Number of packets not sent because of too many collisions
ARP Statistics—Analysis of ARP traffic on this interface; In fields are for traffic received
on the interface and Out fields are for traffic sent on the interface
ARP requests—Number of ARP requests
ARP responses—Number of ARP responses
Errors—Total number of errors in all ARP packets
Discards—Total number of discarded ARP packets
queue—Hardware packet queue associated with the specified traffic class and
interface
Queue length—Length of the queue, in bytes
Forwarded packets, bytes—Number of packets and bytes that were forwarded on
this queue
Dropped committed packets, bytes—Number of committed packets and bytes
that were dropped
Dropped conformed packets, bytes—Number of conformed packets and bytes
that were dropped
Dropped exceeded packets, bytes—Number of exceeded packets and bytes that
were dropped
Example—Displays the status of a Fast Ethernet interface
host1:vr2#show interfaces fastEthernet 2/0
FastEthernet2/0 is Up, Administrative status is Up
Hardware is Intel 21440, address is 0090.1a10.0552
MAU is 10BASE-T
MTU: Operational 1518, Administrative 1518
Duplex Mode: Operational Full Duplex, Administrative Auto Negotiate
Speed: Operational 100 Mbps, Administrative Auto Negotiate
De-bounce: State is Enabled, interval is 2 seconds
Chapter 5: Configuring Ethernet Interfaces
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