Junos OS Interfaces Command Reference - Juniper Networks

Junos OS 12.1 Interfaces Command Reference
Table 146: show interfaces (Link Services IQ) Output Fields (continued)
Field Name
Statistics last
cleared
Traffic statistics
Frame exceptions
Buffering
exceptions
838
Field Description
Time when the statistics for the interface were last set to zero.
Number and rate of bytes and packets received and transmitted on the physical
interface. All references to traffic direction (input or output) are defined with
respect to the router. Input fragments received by the router are assembled into
input packets; output packets are segmented into output fragments for
transmission out of the router.
Information about framing exceptions. Includes events recorded under Exception
Events for each logical interface.
• Oversized frames—Number of frames received that exceed maximum frame
length. Maximum length is 4500 Kb (kilobits).
• Errored input frames—Number of input frame errors.
• Input on disabled link/bundle—Number of frames received on disabled links.
These frames can result either from an inconsistent configuration, or from a
bundle or link being brought up or down with traffic actively flowing through
it.
• Output for disabled link/bundle—Number of frames sent for a disabled or
unavailable link. These frames can result either from an inconsistent
configuration, or from a bundle being brought up or down while traffic is
flowing through it.
• Queuing drops—Total number of packets dropped before traffic enters the
link services IQ interface. Indicates that the interface is becoming
oversubscribed.
Information about buffering exceptions. Includes events recorded under
Exception Events for each logical interface:
• Packet data buffer overflow—Packet buffer memory is full. This overflow can
occur when the aggregate data rate exceeds the physical link services IQ
interface capacity.
• Fragment data buffer overflow—Fragment buffer memory is full. This overflow
can occur when excessive differential delay is experienced across the links
within a single bundle, or when the aggregate data rate exceeds the physical
link services IQ capacity. Check the logical interface exception event counters
to determine which bundle is responsible.
Level of Output
detail extensive
detail extensive
extensive
extensive
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