Cisco 2524 - Router - EN Руководство по устранению неполадок - Страница 2
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Chassis/Module
Router chassis
2-wire switched 56-kbps,
4-wire 56/64-kbps, and
factional T1/T1 WAN
DSU/CSU modules
Serial module
ISDN BRI module
ISDN BRI with integrated
NT1 module
B-2 Cisco 2524 and Cisco 2525 Router User Guide
LED
State
Ethernet link
On
2
(Cisco 2524)
Off
In-ring
On
(Cisco 2525)
Off
RX
On
TX
On
CD (Carrier)
On
Loopback
On
Alarm
On
Activity (serial
Flickering
activity)
Off
Activity (ISDN
Flickering
BRI activity)
Off
ACT (ISDN
Flickering
BRI activity)
NT1
On
Description
The router senses the Ethernet 10BaseT link integrity
signal, indicating normal operation.
The router is not sensing the Ethernet 10BaseT link
integrity signal. Check the Ethernet 10BaseT cable
connection.
The router has been successfully inserted into the
Token Ring, indicating normal operation.
The router has not been successfully inserted into the
Token Ring. Check the Token Ring cable connection.
Data is being received at the DTE interface.
Data is transmitting from the DTE interface.
The DSU/CSU in the module is communicating with
another DSU/CSU.
The DSU/CSU is in loopback mode.
An alarm condition is present.
The serial WAN connection is transmitting and
receiving data normally.
The serial WAN connection is not transmitting or
receiving data. Check the serial cable connection.
The ISDN BRI WAN connection is transmitting and
receiving data normally.
The ISDN BRI WAN connection is not transmitting or
receiving data. Check the BRI cable connection.
The ISDN BRI (with integrated NT1) WAN
connection is transmitting and receiving data
normally.
The router detects the ISDN link integrity signal at the
3
U interface
and the internal S/T interface
that an ISDN connection has been established.
4
, indicating