i have a catylast 4003 that has a "piggybacked" catalyst 3548 on one port. this has been working fine until yesterday. i got a message that this 3548 was down. both devices showed connectivity, but i could not get the 3548 to work. logged onto console port and there were no errors evident. i reconfigured another port on the 4000 with no success. i installed a known working 2924 on this newly configured port. i can now "see" the 2924, can telnet to it, access the web interface, make configuration changes,etc. not one device connected to the 2924 can access the network, nor can i see any of these devices. counters on the individual ports show activity. i can reset them, they clear, and continue to show activity. does anyone have an idea what is up? thanks in advance
1. There may also be an issue with the trunking between the ports. Cisco has proprietary ISL trunking, but the cat4003 uses 802.1q trunking (the Open Standard form). The other devices use one or the other, but I believe that the 4000 is limited to 802.1q.
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