Clear Crc Error
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network such as SynqNet. Whereas the Packet Error Counter checks for missing or invalid packets, the CRC Error Counter checks the validity crc error fix of the data inside the packets. Each node has a CRC Error
Crc Cisco Definition
Counter at each port (IN and OUT), although packets are only checked at either the node's IN port
Clear Counters Cisco
or OUT port, depending on where the packets are received. The controller has a CRC Error Counter at each port (IN and OUT), although packets are checked at the controller's https://supportforums.cisco.com/discussion/10806391/crc-error-and-input-error-how-can-fix-these IN port and/or OUT port depending on where the packets are received. For string topologies, packets are received at the controller's OUT port only. For ring topologies, packets are received at the controller's OUT port and IN port, depending on the location of the redundant cable. For example, in a ring topology if the last cable (from the last node to http://support.motioneng.com/technology/synqnet/crc_err_ctr.htm the controller's IN port) is idle, then no data is received at the controller's IN port and the CRC counter at the IN port will remain idle. The CRC error count will increment by one for bad packets that are addressed to other nodes (or to the controller) or for packets received with a bad CRC. "Lost" packets, which never reach the node, do not increment the CRC error count (it increments the Packet Error Counter). The counters are unsigned, 8-bit values and saturate at a maximum of 255 (0xFF) errors. The counter also goes back to zero after a hardware reset and can be cleared by controller software. Unlike packet errors, CRC errors are NOT node-specific (i.e. All packets are checked at each node, as well as at the controller). NOTE: Data errors in the start delimiter may prevent the CRC errors from being counted. In Motion Console Node CRC Error Counters In Motion Console, you can see the node's CRC Error Counters in the SqNode Summary Window. It counts the number of upstream CRC Errors fo
Post #1 of 10 (4761 views) Permalink CRC errors on fastethernet interface Have a 7206 connected to a Catalyst 2900XL switch port. The 2900XL is getting CRC http://www.gossamer-threads.com/lists/cisco/nsp/165790 errors on the port at the rate of about one every one or http://www.tek-tips.com/viewthread.cfm?qid=1009917 two seconds. I've tried replacing the cable, no effect. core-sw1.noc#show int fastethernet0/1 FastEthernet0/1 is up, line protocol is up Hardware is Fast Ethernet, address is 0002.7d2f.bc41 (bia 0002.7d2f.bc41) Description: 802.1q trunk to core-gw1.noc.win.net port FastEthernet0/0 MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255, txload 51/255, rxload 37/255 Encapsulation ARPA, crc error loopback not set Keepalive not set Full-duplex, 100Mb/s, 100BaseTX/FX ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output 00:00:00, output hang never Last clearing of "show interface" counters 00:05:49 Queueing strategy: fifo Output queue 0/40, 0 drops; input queue 0/75, 0 drops 30 second input rate 14547000 bits/sec, 2327 packets/sec 30 second output rate 20099000 bits/sec, 3507 packets/sec 862330 packets input, 682108246 bytes Received 398 input errors on broadcasts, 0 runts, 0 giants, 0 throttles 63 input errors, 63 CRC, 0 frame, 64 overrun, 64 ignored 0 watchdog, 257 multicast 0 input packets with dribble condition detected 1262698 packets output, 899402766 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out Since changing the cable made no difference, it's either a port problem on the 7206 or 2900XL, or a config problem. Here are the configs for the interfaces on each end. (Since the 7206 does not specify 100mbps, I had thought maybe it was occasionally trying to renegotiate the speed, which might screw up the switch end, which is hardwired 100-full, while the 7206 is set to full-duplex, the speed command to force 100mbps speed does not seem to exist on the 7206.) Cisco 7206 -- interface FastEthernet0/0 description Win.net NOC gateway LAN, 911 Heyburn Bldg (via core-sw1.noc.win.net) ip address nnn.nnn.nnn.nnn 255.255.255.192 ip access-group block-out-to-dot30 out no ip proxy-arp ip route-cache same-interface ip route-cache flow ip ospf message-digest-key 1 md5 7 xxxxxxxxxxxxxxxxxxxxxxx ip ospf cost 2 ip ospf priority 2
Join INTELLIGENT WORK FORUMSFOR COMPUTER PROFESSIONALS Log In Come Join Us! Are you aComputer / IT professional?Join Tek-Tips Forums! Talk With Other Members Be Notified Of ResponsesTo Your Posts Keyword Search One-Click Access To YourFavorite Forums Automated SignaturesOn Your Posts Best Of All, It's Free! Join Us! *Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.Tek-Tips Posting Policies Jobs Jobs from Indeed What: Where: jobs by Link To This Forum! Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.Just copy and paste the BBCode HTML Markdown MediaWiki reStructuredText code below into your site. Cisco: Routers Forum at Tek-Tips HomeForumsCommunications RackNetworkingCisco: Routers Forum Clear Counters thread557-1009917 Forum Search FAQs Links MVPs Clear Counters Clear Counters ashokshabakah (ISP) (OP) 21 Feb 05 09:36 Hai AllIam new to the forum can any one explain me the command Clear countersits exactly for wat purpose plz explain me thankscarlos RE: Clear Counters ashokshabakah (ISP) (OP) 21 Feb 05 12:08 any suggestions RE: Clear Counters vipergg (MIS) 21 Feb 05 12:12 This clears all the counters you see when you do a like a show interface command on a IOS box .When do a show interface command it will tell you when the last time the counters were cleared .This clears interface errors,crc's packet counters etc... RE: Clear Counters robertjo24 (MIS) 21 Feb 05 12:25 You can clear the counters on al linterfces at once with the command, or you can specify a particular interface and clear the counters on just that interface.Here are the examples:Router#clear countersClear "show interface" counters on all interfaces [confirm]Router#clear counters s0/0Clear "show interface" counters on this interface [confirm]Router# RE: Clear Counters themut (TechnicalUser) 21 Feb 05 12:57 When you issue a "show interface