System information

Troubleshooting Token Ring 6-87
show interfaces tokenring
keepalive Indicates whether keepalives are set.
ARP type: Type of Address Resolution Protocol assigned.
Ring speed: Speed of Token Ring—4 or 16 Mbps.
{Single ring | multiring node} Indicates whether a node is enabled to collect and use source routing information
(RIF) for routable Token Ring protocols.
Group Address: Interface’s group address, if any. The group address is a multicast address; any
number of interfaces on the ring may share the same group address. Each interface
may have at most one group address.
Last input Number of hours, minutes, and seconds since the last packet was successfully
received by an interface. Useful for knowing when a dead interface failed.
Last output Number of hours, minutes, and seconds since the last packet was successfully
transmitted by an interface.
output hang Number of hours, minutes, and seconds (or never) since the interface was last reset
because of a transmission that took too long. When the number of hours in any of
the “last” fields exceeds 24 hours, the number of days and hours is printed. If that
field overflows, asterisks are printed.
Last clearing Time at which the counters that measure cumulative statistics (such as number of
bytes transmitted and received) shown in this report were last reset to zero. Note
that variables that might affect routing (for example, load and reliability) are not
cleared when the counters are cleared.
*** indicates the elapsed time is too large to be displayed.
0:00:00 indicates the counters were cleared more than 231 ms (and less than 232
ms) ago.
Output queue, drops
Input queue, drops
Number of packets in output and input queues. Each number is followed by a
slash, the maximum size of the queue, and the number of packets dropped due to a
full queue.
Five minute input rate,
Five minute output rate
Average number of bits and packets transmitted per second in the past five
minutes.
The five-minute input and output rates should be used only as an approximation of
traffic per second during a given five-minute period. These rates are exponentially
weighted averages with a time constant of five minutes. A period of four time
constants must pass before the average will be within 2 percent of the
instantaneous rate of a uniform stream of traffic over that period.
packets input Total number of error-free packets received by the system.
bytes input Total number of bytes, including data and MAC encapsulation, in the error-free
packets received by the system.
no buffer Number of received packets discarded because there was no buffer space in the
main system. Compare with ignored count. Broadcast storms on Ethernet
networks and bursts of noise on serial lines are often responsible for no input
buffer events.
broadcasts Total number of broadcast or multicast packets received by the interface.
runts Number of packets that are discarded because they are smaller than the medium’s
minimum packet size.
giants Number of packets that are discarded because they exceed the medium’s
maximum packet size.
Field Description