Hiya all, I have a Cisco 2901 Switch. When I bought the Switch it had IOS version 2.1(8) loaded. The Switch was working great until I decided to install IOS 4.5(5), so that I can practice ISL/Trunking. I upgraded the Supervisor module to version 4.5(5) as follows: 100BaseTX Supervisor WS-X2900 - IOS 4.5(5) 10/100BaseTX Ethernet WS-X2901 - IOS 2.1(8) Now I cannot seem to be able to ping the TFTP workstation. Can someone please shed some light as to why I cannot connect to the TFTP to upload/download IOS images. Is there another alternative to uploading images without having to go through the sc0 interface. Maybe directly through one of the 12 Ports on the 10/100BaseTX Ethernet WS-X2901. Also the Switch now for some reason seems to reboot itself automatically when I issue the "Show version" command at the IOS prompt. The output for this can be seen at the bottom of this list. Any feedback will be appreciated. Thank you for your help. Best Rgds, Ash =============================================================== Here is a complete breakdown of the NT Workstation and the Cisco configs: D:\>ipconfig Windows NT IP Configuration Ethernet adapter AMDPCN1: IP Address. . . . . . . . . : 172.16.10.2 Subnet Mask . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . : =============================================================== Console> (enable) show module Mod Module-Name Ports Module-Type Model Serial-Num Status --- ------------------- ----- --------------------- --------- --------- ---- --- 1 2 100BaseTX Supervisor WS-X2900 006522296 ok 2 12 10/100BaseTX Ethernet WS-X2901 006524866 ok Mod MAC-Address(es) Hw Fw Sw --- -------------------------------------- ------ ---------- --------------- -- 1 00-10-11-d7-8c-00 to 00-10-11-d7-8f-ff 2.3 2.2(2) 4.5(5) 2 00-e0-1e-82-f2-64 to 00-e0-1e-82-f2-6f 2.0 1.4 2.1(8) =============================================================== Console> (enable) show config ... ........... ........... .. begin ! #version 4.5(5) ! set password $1$FMFQ$HfZR5DUszVHIRhrz4h6V70 set enablepass $1$FMFQ$HfZR5DUszVHIRhrz4h6V70 set prompt Console> set length 24 default set logout 20 set banner motd ^C^C ! #system set system baud 9600 set system modem disable set system name set system location set system contact ! #snmp set snmp community read-only public set snmp community read-write private set snmp community read-write-all secret set snmp rmon disable set snmp trap disable module set snmp trap disable chassis set snmp trap disable bridge set snmp trap disable repeater set snmp trap disable vtp set snmp trap disable auth set snmp trap disable ippermit set snmp trap disable vmps set snmp trap disable entity set snmp trap disable config set snmp trap disable stpx set snmp trap disable syslog set snmp extendedrmon vlanmode disable set snmp extendedrmon vlanagent disable set snmp extendedrmon enable ! #ip set interface sc0 1 172.16.10.5 255.255.0.0 172.16.255.255 set interface sc0 up set interface sl0 0.0.0.0 0.0.0.0 set interface sl0 up set arp agingtime 1200 set ip redirect enable set ip unreachable enable set ip fragmentation enable set ip alias default 0.0.0.0 ! *****Text omitted from here onwards... =============================================================== Console> show ip route Fragmentation Redirect Unreachable ------------- -------- ----------- enabled enabled enabled Destination Gateway Flags Use Interface ----------------------- ----------------------- ------ ---------- -------- - 172.16.0.0 172.16.10.5 U 0 sc0 default default UH 0 sl0 =============================================================== Tried to ping the NT Workstation for TFTP connectivity: Console> (enable) ping 172.16.10.2 no answer from 172.16.10.2 Console> (enable) =============================================================== I issued a "show version" command and the Switch reboots itself: Console> (enable) show ver WS-C2900 Software, Version McpSW: 2.1(8) NmpSW: 4.5(5) Copyright (c) 1995-1999 by Cisco Systems NMP S/W compiled on Dec 22 1999, 17:07:39 MCP S/W compiled on May 28 2097, 14:30:25 System Bootstrap Version: 2.2(2) Hardware Version: 2.3 Model: WS-C2900 Serial #: 006522296 Mod Port Model Serial # Versions --- ---- ---------- --------- ---------------------------------------- 1 2 WS-X2900 006522296 Hw : 2.3 Fw : 2.2(2) Fw1: 2.2(1) Sw : 4.5(5) 2 12 WS-X2901 006524866 Hw : 2.0 Fw : 1.4 Sw : 2.1(8) ATE0 ATS0=1 ROM Power Up Diagnostics of Mar 26 1997 Init NVRAM Log LED Test ................... done ROM Checksum ............... passed Dual Port RAM r/w Test ..... passed ID PROM .................... passed System DRAM Size(mb) ....... 20 DRAM Data Bus Test ......... passed DRAM Address Test .......... passed DRAM Byte/Word Access Test .. passed EARL Test .................. passed BOOTROM Version 2.2(2), Dated Mar 26 1997 16:29:34 BOOT date: 11/14/00 BOOT time: 01:25:40 SIMM RAM address test SIMM Ram r/w 55aa SIMM Ram r/w aa55 Uncompressing NMP image. This will take a minute... 2000 Nov 14 00:19:49 %SYS-5-MOD_OK:Module 1 is online 2000 Nov 14 00:20:00 %SYS-5-MOD_OK:Module 2 is online Console> _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]