Are the routers connected to gig switches? And do the duplex and speed settings match up?
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of hawk98 TheHawk Sent: Thursday, September 04, 2008 1:04 PM To: [email protected] Subject: [c-nsp] (no subject) Hello All, We're noticing a large number of input errors on multiple GigE interfaces on various C720X NPE-G1 routers. These input errors match exactly with the number of overruns on those interfaces. There are a couple strange things that we've noticed: 1. this problem happens on more than 1 router (similar configuration on all routers) 2. all routers affected began exhibiting these errors roughly around the same time (same early morning) 3. All routers are G1 and ran the same IOS code 4. One of the routers was rebooted and upgraded to a different code however the problem still persists 5. we suspect it directly affects the functionality of the router as we see random lockups of the units 6. All routers are connected to redundant switches and cabling/switches have been ruled out. Below is a sample output of the show interface on one of the routers: GigabitEthernet0/1 is up, line protocol is up Hardware is BCM1250 Internal MAC, address is 00b0.c2ee.b81b (bia 00b0.c2ee.b81b) Description: XXXXXXXX MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 2/255 Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set Keepalive set (10 sec) Full-duplex, 1000Mb/s, media type is RJ45 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: 1/75/499528/97 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 8539000 bits/sec, 10996 packets/sec 5 minute output rate 1905000 bits/sec, 807 packets/sec 139728650 packets input, 10628478461 bytes, 92 no buffer Received 487174 broadcasts, 0 runts, 0 giants, 0 throttles 171399 input errors, 0 CRC, 0 frame, 171399 overrun, 0 ignored 0 watchdog, 1904930 multicast, 0 pause input 0 input packets with dribble condition detected 8125773 packets output, 2521690484 bytes, 0 underruns 2 output errors, 0 collisions, 1 interface resets 3842 unknown protocol drops 0 babbles, 0 late collision, 0 deferred 2 lost carrier, 0 no carrier, 0 pause output 0 output buffer failures, 0 output buffers swapped out Does anyone have any idea what might be going on? I initially suspected an IOS bug (since all devices were affected) however after the upgrade the problem still persists. Any help is appreciated. Adrian _________________________________________________________________ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ ######################################################### The information contained in this e-mail and subsequent attachments may be privileged, confidential and protected from disclosure. This transmission is intended for the sole use of the individual and entity to whom it is addressed. If you are not the intended recipient, any dissemination, distribution or copying is strictly prohibited. If you think that you have received this message in error, please e-mail the sender at the above e-mail address. ######################################################### _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
