Problems with Management (Netview/SNMP/TELNET)
This section details problems occuring during the administration of the workgroup switch (PING, TELNET,
TFTP, SNMP/ATMC).
PING: The Workgroup Switch cannot PING the management station.
Steps to Take:
1. Since all the management services are running over IP, you have to ensure that the workgroup switch can PING
the destination station where you will run either TELNET, the TFTP daemon (TFTP server), or the SNMP manager
(ATMC). If the PING fails, see previous sections on PING failures in Classical IP or LAN emulation networks.
TELNET: You cannot TELNET to the Workgroup Switch from the management station.
Steps to Take:
1. If the PING does not work, see previous sections on PING failures.
2. Someone is already logged on the workgroup switch by another TELNET session. It is not possible to have more
than one TELNET session per workgroup switch.
To know from which station the other TELNET session is active, use the ATMC SVC Tracking tool to determine at
least which SVCs are connected to the internal port of the workgroup switch (interface 1). You will then know the
ATM addresses of the remote ends, as well as the workgroup switch ports to which they are connected to.
Note: It is recommended to set the Terminal Timeout parameter to a non-zero value, to force TELNET sessions
to close themselves after some inactivity.
TFTP: Upload fails from the Workgroup Switch
Explanation: The upload can be done either from the configuration console (local console or TELNET) or from the
SNMP Manager (ATMC or MIB Browser).
Before performing any upload, make sure that the machine hosting the TFTP server can PING the workgroup switch.
When an upload fails, an error code is returned. That error code can be different between the terminal dialog and the
ATMC/MIB browser, which is why both return codes are documented.
Note: When the upload fails from the terminal dialog (console or TELNET), check the return code by using the
SHOW TFTP command.
Steps to Take:
1. Messages:
Error/generic error..Host Access Violation...Access Rights
Violation/access-rights-violation...File already exists/file-already exists.
The file that you want to upload already exists on the target machine, and is read-only.
Change the attributes of the file on the target machine or change the name of the file to be uploaded.
You are trying to upload to a directory that is not uploadable by TFTP.
If the target host runs AIX or Unix, use the directory /tmp, or configure the file /etc/tftpaccess.ctl with lines
beginning with 'allow:'. Check the documentation of the daemon/server TFTPD. If you use another operating
system (OS/2 or others), configure the TFTP daemon on that system to accept uploads in the desired
directory.
You are trying to upload a file that can only be downloaded (operational code, boot code, or FPGA picocode).
Check the file type of the file to be uploaded.
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IBM 8285 Nways ATM Workgroup Switch:
Installation and User’s Guide
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