Cabletron Systems CSX1000 User Manual
Workgroup Remote Access Switch 397
P
ROBLEM
D
IAGNOSIS
IP RIP
a.
For packet types, it is important to verify that the contents of the packet in question are
indeed correctly specified (IP Addresses, Protocol, TCP Ports, etc.).
indeed correctly specified (IP Addresses, Protocol, TCP Ports, etc.).
b.
For configured filters, keep in mind that component conditions are executed in the order in
which they appear in the configuration. It is possible that a packet is not being discarded
as expected if a previous condition matches that packet with an action of forward.
which they appear in the configuration. It is possible that a packet is not being discarded
as expected if a previous condition matches that packet with an action of forward.
2.
Check to see if the filters are properly applied:
a.
a.
For global filters, use Manage Mode’s ipfilt command. Check the Apply Global Forwarding
Filter option.
Filter option.
b.
For filters applied on a per-device basis, use Manage Mode’s device command. Check to see
if filters properly applied.
if filters properly applied.
c.
For network interface filters, check the IP interface information in CFGEDIT (Options, IP
Configuration, IP Interface).
Configuration, IP Interface).
3.
Make configuration changes as necessary.
If you are still experiencing problems:
1.
Check the status of the Exception Filter (using Manage Mode, ipfilt command). The Exception
Filter overrides all other filters. If the Exception Filter is enabled, this could be the problem.
Filter overrides all other filters. If the Exception Filter is enabled, this could be the problem.
2.
With per-device and network interface filters, it is necessary that the packet in question truly
flows through the desired application point. Try this test:
a.
flows through the desired application point. Try this test:
a.
Disable the per-device and network interface filters.
b.
Apply each filter in question globally.
c.
When desired IP packets are received, it is guaranteed that they will pass through the filter
in question. You can then analyze the effects in isolation. Your findings will be helpful if
you need to call Customer Support.
in question. You can then analyze the effects in isolation. Your findings will be helpful if
you need to call Customer Support.
If the IP filters are properly configured, and the system is still not correctly discarding packets,
contact Customer Support.
contact Customer Support.
IP RIP
This section provides guidance for diagnosing IP RIP operational problems.
IP RIP I
NITIALIZATION
Problem:
The CyberSWITCH does not display the correct IP RIP Initialization messages. Instead, it displays
one or more of the following message:
The CyberSWITCH does not display the correct IP RIP Initialization messages. Instead, it displays
one or more of the following message:
[IP RIP] Initialization failed, unable to allocate buffers
[IP RIP] Unable to open RIP/UDP port 512
Action:
There is an unexpected condition present within the CyberSWITCH software. Contact Customer
Support.
There is an unexpected condition present within the CyberSWITCH software. Contact Customer
Support.