Diagnostics and Troubleshooting
8-12 8000-A2-GB20-20
November 1997
No SNMP Connection Established
PROBLEM: Cannot establish an SNMP session/connection.
ACTION: 1. Try to ping the MCC card and/or DSL card from the
management system.
2. If you cannot, check to see that you have entered an IP
address and subnet mask (see
Who Am I
screen in
Chapter 3).
3. If there is an IP address, then check the routing tables in the
MCC card and DSL card.
4. Check to see if the community string is correct.
5. If IP Address Security is enabled, check to see that Network
Management’s IP address has been entered correctly in the
MCC card’s and DSL card’s permission list and that it has
proper access.
6. Check to see if you have properly configured the SNMP
parameters (see
Monitoring
→
Network Protocol
(B-D) in
Chapter 7, especially
SNMP Security:
Configuration
→
SNMP
(A-F) in Chapter 6).
Filters Not Working
PROBLEM: Filters are not working properly.
ACTION: 1. Check to see that filters have been configured properly (see
Configuration
→
Interfaces
(A-C) in Chapters 5 and 6).
2. Check to see if there is a conflict with the order of the filter
tests. They should perform in the following order:
Port-to-Port (PTOP), Host-to-Port (HTOP), Host-to-Host
(HTOH), Protocol Type (PROTOCOL), Bit Filtering.