External Device Window - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

Chapter 29 Troubleshooting
Troubleshooting the BPX Switch
In addition to testing the connection, the Test Connection routine will attempt to isolate and repair any
failure it detects. The controller card at the node where the Test Connection (tstcon) command is issued
instructs the service card to build packets containing special test frames. These packets are sent across
the network to the terminating node, which depacketizes them, repacketizes the frame, and sends them
back to the originating node where the returned frame is analyzed.
If the returned test pattern is incorrect, the system goes into an automatic fault isolation mode.
Controllers in the various nodes along the connection route communicate with each other over an
overhead message channel separate from the normal circuits.
The test pattern continues to be transmitted and analyzed at each node along the path as it is transmitted
and as it is received until the failed network element is identified. Redundant cards may be switched
into operation and routing tables in associated network trunk cards may be reprogrammed in an attempt
to correct the problem. If all else fails, the suspected path and/or network component is then reported
to the network manager (NMS).

External Device Window

External devices connected to network nodes, such as bridges, routers, or sub-rate multiplexers may be
accessed through the NMS Window command. This feature provides a direct command line interface
to external devices from the NMS console. Depending on the capability of the external device, it is often
possible to report status and alarms and to control or configure the device through an RS232 port
connection.
The following example illustrates a Window display of a router connected to the local node. In this
example, the window is used to initiate a ping of the router connection.
Example: NMS Window to a Local Router
Protocol [ip]:
Target IP address: 192.9.202.1
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]:
Type escape sequence to abort. ^^
Sending 5, 100-byte ICMP Echos to 192.9.202.1, timeout is 2 seconds:
. . . . .
Success rate is 100 percent
Cisco BPX 8600 Series Installation and Configuration
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Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001