Cabletron Systems MT8-MIM Spezifikationen PDF herunterladen (Seite 32)

Chapter 3: Booting/Image Code Loading Problems

3-14 Troubleshooting Guide

Do this:

30101.hex

TIP: To avoid TFTP download failures, always use the /tftpboot directory structure and secure

mode (look for the “-s /tftpboot” option in the inetd.conf). When using this technique, you ONLY

HAVE TO ENTER the image ﬁlename and NOT THE FULL PATH NAME. This is a very

important step, as some UNIX stations use tftpboot as a default whether or not the secure

mode is used. If you specify a full path, the tftp download will fail. This has been a huge cause

for failures. If you do not have enough disk space in the /tftpboot directory, you can create a

symbolic link (soft link) to a ﬁle system that has enough space:

Syntax: ln -s <destination dir> /tftpboot

Example:

% ln -s /usr3/tftpboot /tftpboot

NOTE: Refer to the supporting documentation for your UNIX station or online help (man tftpd,

and man inetd).

3. Copy the hex image or fls image into the /tftpboot directory, or directory specified in the inetd.conf file

(refer to TIP above). If the firmware image has the .zip extension, the file must be before you attempt the

TFTP download. (For example, you can use Info-ZIP, a UNIX unzip utility.)

4. Now you are ready to start the TFTP download process. Use your management application to enter the

appropriate information and start the TFTP process.

TIP: For SPMA users performing an “On-line” download, use the *.ﬂs ﬁlename, click on “On-

line download” and choose either “Download only”, or “Download and then Reboot”. When

performing an “Off-line” download use the *.hex ﬁlename and choose “Off-line download”,

“Download new image on reboot” or “Commit image to ﬂash”.

3.3.2 Setting Up UNIX Station as TFTP Download Server Going Across a Router

to the Device

To set up a UNIX station as a TFTP download server going across a router to the device, proceed as follows:

1. Perform steps 1 through 3 in Section 3.3.1.

2. Verify whether PROXY ARP is enabled or disabled. Some routers need the TFTP server IP address in an

“ip helper” table.

If PROXY ARP is enabled, you are now ready to perform the TFTP Download.

If PROXY ARP is disabled, your device must support the “Default Gateway” feature.

This can be veriﬁed under “setup” view in the device Local Management (or other network management

software). The Default Gateway entry will be darkened, allowing you to type in the text ﬁeld.

NOTE: If PROXY ARP is not enabled on the router and your device does not support the

Default Gateway, then you must set up a TFTP server on the local subnet of the device.

TIP: Make sure the subnet mask is set correctly on the server, so the server knows that the

device is across the router. This would typically be 255.255.255.0 for a Class C default mask.

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Cabletron Systems MT8-MIM Spezifikationen Seite 32