I'm having a problem with a WS-C3750G-12S-E. I'm seeing CRCs/input errors only on specific interfaces on the 3750. Initially i thought this was a fibre issue so i cleaned/replaced the fibre patch leads as well as the SFPs at both ends. the CRC's/errors continued until i removed the SFP from the switch and placed it into another port on the same switch.
if i use interfaces gi1/0/1, 2, 5, 6, 9 or 10 i get errors/CRCs - if i move the SFP (fibre or copper) to interfaces gi1/0/3, 4, 7, 8, 11, or 12 the errors/CRCs stop. The output of "sh platform pm if-numbers" below shows that the switch has 3 asics (with 4 ports) - the interfaces i'm having a problem with are spread across all 3 asics but only on the last 2 ports (2 and 3).
interface gid gpn lpn port slot unit slun port-type lpn-idb gpn-idb
there is very little traffic through the switch and cpu is ok. Could this be a hardware fault? switch is currently running c3750-ipservicesk9-mz.122-55.SE6.bin ( upgraded from 52). output of the command sh platform port-asic stats drop for the affected interfaces show zero drops.
thanks for the resonse Alessio - unfortunately tdr isn't support on sfp ports ( i get % TDR test is not supported on interface ) when i try. I've already double checked speed/duplex settings and all are ok. as i say, the problem is resolved when i move the sfp onto gi1/0/3,4,7,8,11,12 but i don't have enough of these 'working' ports for all my links.
hi leolaohoo - requested output below (for gi1/0/1 - one of the affected ports).
sh ver Cisco IOS Software, C3750 Software (C3750-IPSERVICESK9-M), Version 12.2(55)SE6, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2012 by Cisco Systems, Inc. Compiled Mon 23-Jul-12 13:22 by prod_rel_team Image text-base: 0x01000000, data-base: 0x02F00000
ROM: Bootstrap program is C3750 boot loader BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(44)SE5, RELEASE SOFTWARE (fc1)
Mer3750SOC-C31-1 uptime is 1 day, 3 hours, 9 minutes System returned to ROM by power-on System restarted at 06:01:27 BST Mon Aug 13 2012 System image file is "flash:c3750-ipservicesk9-mz.122-55.SE6.bin"
This product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer and use. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute or use encryption. Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately.
If you require further assistance please contact us by sending email to firstname.lastname@example.org.
cisco WS-C3750G-12S (PowerPC405) processor (revision H0) with 131072K bytes of m emory. Processor board ID CAT0828R0R2 Last reset from power-on 7 Virtual Ethernet interfaces 12 Gigabit Ethernet interfaces The password-recovery mechanism is enabled.
512K bytes of flash-simulated non-volatile configuration memory. Base ethernet MAC Address : 00:11:93:25:3C:00 Motherboard assembly number : 73-8307-08 Power supply part number : 341-0048-01 Motherboard serial number : CAT08270HUH Power supply serial number : DTH082011GM Model revision number : H0 Motherboard revision number : A0 Model number : WS-C3750G-12S-E System serial number : CAT0828R0R2 Top Assembly Part Number : 800-23419-01 Top Assembly Revision Number : K0 Version ID : N/A Hardware Board Revision Number : 0x07
Switch Ports Model SW Version SW Image ------ ----- ----- ---------- ---------- * 1 12 WS-C3750G-12S 12.2(55)SE6 C3750-IPSERVICESK9-M
Configuration register is 0xF
sh controllers ethernet-controller gi1/0/1
Transmit GigabitEthernet1/0/1 Receive 259938503 Bytes 1207273348 Bytes 736997 Unicast frames 1034568 Unicast frames 320591 Multicast frames 214721 Multicast frames 198162 Broadcast frames 20997 Broadcast frames 0 Too old frames 1184134313 Unicast bytes 0 Deferred frames 16087093 Multicast bytes 0 MTU exceeded frames 1724812 Broadcast bytes 0 1 collision frames 0 Alignment errors 0 2 collision frames 0 FCS errors 0 3 collision frames 0 Oversize frames 0 4 collision frames 0 Undersize frames 0 5 collision frames 0 Collision fragments 0 6 collision frames 0 7 collision frames 52012 Minimum size frames 0 8 collision frames 371239 65 to 127 byte frames 0 9 collision frames 43419 128 to 255 byte frames 0 10 collision frames 34665 256 to 511 byte frames 0 11 collision frames 14625 512 to 1023 byte frames 0 12 collision frames 32619 1024 to 1518 byte frames 0 13 collision frames 0 Overrun frames 0 14 collision frames 0 Pause frames 0 15 collision frames 0 Excessive collisions 730 Symbol error frames 0 Late collisions 119 Invalid frames, too large 0 VLAN discard frames 722288 Valid frames, too large 0 Excess defer frames 31 Invalid frames, too small 4033 64 byte frames 0 Valid frames, too small 943917 127 byte frames 129003 255 byte frames 0 Too old frames 56374 511 byte frames 1 Valid oversize frames 40047 1023 byte frames 0 System FCS error frames 79734 1518 byte frames 0 RxPortFifoFull drop frame 2642 Too large frames 0 Good (1 coll) frames 0 Good (>1 coll) frames
sh interfaces gi1/0/1 GigabitEthernet1/0/1 is up, line protocol is up (connected) Hardware is Gigabit Ethernet, address is 0011.9325.3c01 (bia 0011.9325.3c01) Description: MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive not set Full-duplex, 1000Mb/s, link type is auto, media type is 1000BaseSX SFP input flow-control is off, output flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:01, output 00:00:01, 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) 5 minute input rate 4000 bits/sec, 2 packets/sec 5 minute output rate 7000 bits/sec, 6 packets/sec 1270755 packets input, 1207360054 bytes, 0 no buffer Received 235952 broadcasts (214916 multicasts) 0 runts, 1 giants, 0 throttles 730 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 214916 multicast, 0 pause input 0 input packets with dribble condition detected 1256434 packets output, 260085515 bytes, 0 underruns 0 output errors, 0 collisions, 1 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier, 0 PAUSE output 0 output buffer failures, 0 output buffers swapped out
Your line errors are "Symbol errors" being received by the interface.
May I ask what is connected to this?
if i use interfaces gi1/0/1, 2, 5, 6, 9 or 10 i get errors/CRCs - if i move the SFP (fibre or copper) to interfaces gi1/0/3, 4, 7, 8, 11, or 12 the errors/CRCs stop.
This description is very "disturbing". I believe the 3750 has a single 3 ASICs. And if you say that moving the SFP to 3 & 4, ports 7 & 8 and ports 11 & 12 and the line errors stops, I am inclined to believe that the ASIC is failing.
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...