A station cannot register to an LES located behind a WAN (VP-tunnel).
Explanation:
Some of the connections through the VP tunnel work, but not all, especially the ADD_PARTY to put the stations
on the LES Multicast Tree. The 8265 error-log is full of messages like 'Invalid Message Length'.
The WAN (public network providing the VP-tunnel) uses the VCI=5 for its own purposes, and there is a conflict
with the 8265 which also uses VCI=5 (ATM-Forum Signalling VCI).
Steps to Take:
1. Ask your public network provider if they use the VCI=5. If necessary, change the setting of the port.
No Traffic in a Client Environment.
Steps to Take:
1. Make sure that each LES client does not have more than 128 virtual
2. Make sure that the unit providing the LES function has enough vitrual channels. connections.
Problems between two LAN-emulated stations, or between a LAN-emulated station and a LAN
station located behind a bridge (valid only for IBM proprietary LAN emulation).
Steps to Take:
1. For performance problems, first consider the frame sizes defined at the workstation level and at the bridge level.
2. For connection problems, first consider the
if you know neither the emulated MAC addresses of the stations nor the ATM addresses of these stations, use
the Campus Manager - ATM Interface Configuration panel to get their ATM addresses.
Once you know either the ATM addresses or emulated MAC addresses of the stations, look at the Registered
End-systems window of the LES monitor and check that your stations are registered.
Once you know which station is NOT registered, record its ATM address and look at the Call Status History
window of the LES monitor. You should find a recorded call from that ATM address that failed for a certain
'cause
X
, reason
Y
'. The cause
X
shows you the Q2931 cause of the failure. Refer to “Q.2931 Error Codes for
Clear Causes” on page 155.
If you not find any call from that ATM address, that station has not been able to reach the LES. Use the
Campus Manager - ATM Statistics application to open the Clear Table of the 8265/8285 directly attached to
the failing station. That table should have entries with a source ATM address being the one of the failing
station. You will get a Q2931 cause of the failure. Refer to “Q.2931 Error Codes for Clear Causes” on
page 155.
148
IBM 8265: User's Guide
Summary of Contents for 8265 Nways ATM Switch
Page 1: ...8265 Nways ATM Switch IBM User s Guide SA33 0456 01...
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Page 17: ...Part 1 Configuring Your ATM Network Copyright IBM Corp 1994 1998 1...
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Page 107: ...Part 2 Managing the 8265 Copyright IBM Corp 1994 1998 91...
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Page 141: ...Part 3 Appendixes Copyright IBM Corp 1994 1998 125...
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