Fault Detection checklist (1)

Level 1 Fault Detection

Is the interface in the "UP/UP" status?
Show IP interface Summary
Display ATM interface conditions
Display port CAT 5000)
Displays MACCAT 5000)
Common interface Fault Detection: show controllers.
Which end of the connection is DCE and which end is DTE?
Show cdp neighbor.

1. Relay Fault Detection

Is the vro correctly communicating with the ingress relay switch?
Is the DLCI displayed in Show frame PVC active?
Is the router sending group? (Debug frame packet/show frame PVC (grouped into/out)
Is your explain relay group statement correct? (Show frame-relay map)
Debugging frame packet is the most popular failover fault detection tool in the experiment environment.

2. ISDN/DDR Fault Detection

ISDN
Show isdn status
Debug isdn q921
Debug isdn q931
The most popular ISDN fault detection tool, debug isdn q931

DDR
Whether the outbound business flow is of interest
Show dialer
Show dialer map
Debug dialer packet
Debug dialer events
Remember-keep the configuration of the dialer list as simple as possible when you suspect it.

Is the ISDN call set properly?
Debug isdn q931
What is the Q931 information generated by the caller?
What is the Q931 information generated by the called party?
The most popular DDR fault detection tool ebug dialer packet.
Is PPP authoritative authentication normal?
Debug PPP authentication

3. Catalyst 5000 Fault Detection

Port activated?
Show port
Is the port enabled?
Clear counter
Show mac module/port
Does the CAM table have a specific MAC address?
Show port
Show mac
Show cam dynamic
Show vlan
Show trunk
Show spantree

4. ATM Fault Detection

Show atm interface status
Show atm ilmi
Show atm vc

5. ATM simulation lan lane Fault Detection

Does the LANE device correctly establish all management and control VC?
Show lane default
Show lane client
Show lane database
Show lane le-arp
Debug lane client all