Information Technology Reference
In-Depth Information
Table6-1
Media Problems: Token Ring (continued)
Media Problem
Suggested Actions
Congested ring
Insert the router during an off-peak period.
1.
If insertion is successful during off-peak periods, but
unsuccessful during peak load, segment your internetwork to
distribute traffic.
2.
RPS
3
conflict
1.
Use the
no lnm rps
interface configuration command to disable
the RPS function on the router that you are trying to insert into
the ring.
2.
Try to insert the router into the ring.
3.
If you can insert the router with RPS disabled, there is a conflict
between RPS implementations. Contact your technical support
representative for more information.
1.
MAU = multistation access unit
2.
MAC = Media Access Control
3.
RPS = Ring Parameter Server
show interfaces tokenring
When troubleshooting Token Ring media in a Cisco router environment, you can use the
show interfaces
tokenring
command to provide several key fields of information that can assist in isolating problems.
This section provides a detailed description of the
show interfaces tokenring
command and the
information it provides in Table 6-2.
Use the
show interfaces tokenring
privileged exec command to display information about the Token
Ring interface and the state of source route bridging:
show interfaces tokenring
unit
[
accounting
]
show interfaces tokenring
slot
|
port
[
accounting
] (for the Cisco 7500 series and
Cisco 7200 series)
show interfaces tokenring
[
slot
|
port-adapter
|
port
] (for ports on VIP cards in the
Cisco 7500 series routers)
Syntax Description
unit
—Must match the interface port line number.
•
accounting
—(Optional) Displays the number of packets of each protocol type that have been sent
through the interface.
•
slot
—Refers to the appropriate hardware manual for slot and port information.
•
port
—Refers to the appropriate hardware manual for slot and port information.
•
port-adapter—
Refers to the appropriate hardware manual for information about port adapter
compatibility.
•
Command Mode
Privileged exec
