Hi After the port-fast discussion back to your original question. The first thing to look is the interface controller (show controller , show ip interface) and the logging to make sure I don't have speed/duplex or flow-control problems.
Second you get "unknown protocol drops" this happens mostly from cdp packets. You send cdp from your switch but drop them on your router. I my case I had to enable flow-control on my 3560 switch and allow pause frames from the npe-g1. Hint: Sometimes it is more reliable to turn the auto-neg feature off Regards Erich > > NPE-G1: > ------------ > GigabitEthernet0/1 is up, line protocol is up > Hardware is BCM1250 Internal MAC, address is 0006.52f4.d81b (bia > 0006.52f4.d81b) > Internet address is x.x.x.x/28 > MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec, > reliability 255/255, txload 1/255, rxload 1/255 > Encapsulation ARPA, loopback not set > Keepalive set (10 sec) > Full-duplex, 1000Mb/s, link type is autonegotiation, media type is SX > output flow-control is XON, input flow-control is XON > ARP type: ARPA, ARP Timeout 04:00:00 > Last input 00:00:00, output 00:00:00, output hang never > Last clearing of "show interface" counters never > Input queue: 0/75/1321/1 (size/max/drops/flushes); Total output drops: 0 > Queueing strategy: fifo > Output queue: 0/40 (size/max) > 5 minute input rate 4264000 bits/sec, 871 packets/sec > 5 minute output rate 5859000 bits/sec, 1597 packets/sec > 27479327 packets input, 3434822229 bytes, 0 no buffer > Received 941 broadcasts, 0 runts, 0 giants, 0 throttles > 989 input errors, 0 CRC, 0 frame, 989 overrun, 0 ignored > 0 watchdog, 17119 multicast, 0 pause input > 0 input packets with dribble condition detected > 43616309 packets output, 2243854018 bytes, 0 underruns > 5 output errors, 0 collisions, 4 interface resets > 561 unknown protocol drops > 0 babbles, 0 late collision, 0 deferred > 5 lost carrier, 0 no carrier, 0 pause output > 0 output buffer failures, 0 output buffers swapped out _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
