Duplex problems typically show runt, crc and collisions. The show interface line with:
Full-duplex, Unknown Speed, 100BaseTX/FX might be the problem. How about : interface FastEthernet1/0 ip address *.*.*.* *.*.*.* load-interval 30 speed 100 duplex full end and check the config on the 3560 int fa1/2 speed 100 duplex full switchport switchport mode access spanning-tree portfast If you are paranoid with portfast, add "spanning-tree bpduguard enable" ---- Matthew Huff | One Manhattanville Rd OTA Management LLC | Purchase, NY 10577 http://www.ox.com | Phone: 914-460-4039 aim: matthewbhuff | Fax: 914-460-4139 -----Original Message----- From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Elmar K. Bins Sent: Monday, June 08, 2009 5:03 PM To: cisco-nsp@puck.nether.net Subject: [c-nsp] ASR7401 and PA-FE-TX (ISL) Re folks, my private 7401 felt a bit empty, and I bought an ISL for it (this should be the mgt interface, not much bandwidth). I wonder if it is broken, or if I am doing something wrong, or if this just cannot work because I'm too st00p1d and bought the wrong thing... The "show interface" output is quite interesting. No input packets, but hundreds of thousands of input errors _per second_: ========================================================================== rt#sh int f1/0 FastEthernet1/0 is up, line protocol is up Hardware is DEC21140A, address is 000a.4230.841c (bia 000a.4230.841c) Internet address is *.*.*.* MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, reliability 245/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, Unknown Speed, 100BaseTX/FX ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output never, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 30 second input rate 0 bits/sec, 0 packets/sec 30 second output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 2770584934 input errors, 0 CRC, 0 frame, 42604211 overrun, 2727980723 ignored 0 watchdog 0 input packets with dribble condition detected 2432 packets output, 242733 bytes, 0 underruns 0 output errors, 0 collisions, 2090 interface resets 0 babbles, 0 late collision, 0 deferred 2078 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out ========================================================================== Needless to say, I cannot see anything there and I cannot ping the address with a direct connection either... Config is straightforward: interface FastEthernet1/0 ip address *.*.*.* *.*.*.* load-interval 30 duplex full end (I explicitly set the media-type, but that was obviously alright) Of course the switch (3560) the box is connected to has full-duplex configured on the if. Any ideas? Elmar. _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/