From: Sergey (public@svlp.net)
Date: Wed Jul 25 2007 - 06:45:19 ART
Hello,
"When a router starts to boot up, it will look inits global configuration for any boot
commands. If there are not any boot commands specified, the router will fall
over to using the first image in flash. If an image is not found in flash, the router
will then try to boot a default image via TFTP."
As I understand router try download image from tftp server with default address 255.255.255.255,
but in my lab I see that router can't download image
R3 (tftp server)
conf t
tftp-server flash:/c2500-js-l.122-23.bin alias cisco2-2500
R1
conf t
boot system tftp cisco2-2500 255.255.255.255
(I've emulated boot from network because I've got access to router with read-only flash,
and can't test standard boot process)
>From R1 console output
00:17:55: %SYS-5-RELOAD: Reload requested by cisco on console. Reload Reason: Reload Command.
System Bootstrap, Version 5.2(8a), RELEASE SOFTWARE
Copyright (c) 1986-1995 by cisco Systems
2500 processor with 16384 Kbytes of main memory
Loading cisco2-2500 ... [timed out]
>From R3 console output
00:37:48: IP: s=192.168.10.2 (Ethernet0), d=255.255.255.255, len 48, rcvd 2
00:37:48: TFTP: Server request for port 43236, socket_id 0x5AACB4
00:37:52: IP: s=192.168.10.2 (Ethernet0), d=255.255.255.255, len 48, rcvd 2
00:37:57: IP: s=192.168.10.2 (Ethernet0), d=255.255.255.255, len 48, rcvd 2
00:38:03: IP: s=192.168.10.2 (Ethernet0), d=255.255.255.255, len 48, rcvd 2
R3 does not respond for tftp request. but if use "boot system tftp cisco2-2500 tftp_ip_addr" it works fine.
why tftp does not respond to broadcast tftp request?
This archive was generated by hypermail 2.1.4 : Sat Aug 18 2007 - 08:17:42 ART