Junos OS Interfaces Command Reference - Juniper Networks

Junos OS 12.1 Interfaces Command Reference
Table 148: show interfaces (Redundant Link Services IQ) Output Fields (continued)
Field Name
Bundle status
(MLPPP)
874
Field Description
Information about bundle status:
• Received sequence number—Sequence number for received packets.
• Transmit sequence number—Sequence number for transmitted packets.
• Packet drops—Number and byte count of output packets that were dropped,
rather than being encapsulated and sent out of the router as fragments. The
packet drop counter is incremented if there is a temporary shortage of packet
memory on the AS PIC, which causes packet fragmentation to fail.
• Fragment drops—Number and byte count of input fragments that were
dropped, rather than being reassembled and handled by the router as packets.
This counter also includes fragments that have been received successfully
but had to be dropped because not all fragments that constituted a packet
had been received. The fragment drop counter is incremented when a
fragment received on constituent links is dropped. Drop fragments can be
triggered by sequence ordering errors, duplicate fragments, timed-out
fragments, and bad multilink headers.
• MRRU exceeded—Number of reassembled packets exceeding the MRRU. This
counter is not implemented in this release.
• Fragment timeout—The drop timer expired while a fragment sequence number
was outstanding. Occurs only if the drop timer is enabled. This timeout can
occur if the differential delay across the links in a bundle exceeds the
drop-timer setting, or if a multilink packet is lost in transit while the drop timer
is enabled.
• Missing sequence number—A gap was detected in the sequence numbers of
fragments on a bundle.
• Out-of-order sequence number—Two frames with out-of-order sequence
numbers occurred within a single link. This event indicates that an individual
link within a bundle reordered traffic, making the multilink interface unable
to correctly process the resulting stream.
• Out-of-range sequence number—A frame was received with an out-of-range
sequence number. These events can occur when a large amount of
multilink-encapsulated traffic is lost or the multilink peer is reset, so that a
large jump in sequence numbers results. A small number of these events can
occur when the far end of a bundle is taken down or brought up.
• 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.
Level of Output
detail extensive none
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