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Crc errors on serial interface cisco router

in simple language CRC and input errors refer to Layer 1 issues could be a faulty port or cable. Now I am using CISCO 2911 router, every interfaces getting the errors like that only. You can identify five possible problem states in the interface status line of the show interfaces serial display ( see. ( CRC) line q Serial cable is too long, or cable from the. CSU/ DSU to the router is not put errors. Interface status line monet> show interfaces serial 0. connected interface has a problem. Serial x is up, line protocol is down ( DTE mode). A local or remote router is. router' s Ethernet interfaces. The presence of many CRC errors but not many collisions is an indication of excessive noise. • show interfaces ethernet [ type slot | port- adapter | port] ( for ports on VIP cards in the Cisco 7500 series routers). with the ignored count.

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    Errors serial interface

    Broadcast storms on Ethernet networks and bursts of noise on serial lines are often responsible for no input buffer events. I notice that one of the ports ( 2/ 0/ 25) in that port- channel group showing a lot of input errors and CRC and increments at 30. patch lead at the Cisco end and the HP end and I notice it that the errors shows up on one of the 3 interface connected. LAN Switching and Routing. Power supply serial number : DCA143295P1. High errors on multilink interface but no or very less errors on physical serial interfaces. transitions( on physical & virtual interface) ; only the circuit is over utilized which I believe should not cause input/ CRC errors to generate. The router is having 365000 input errors for received 123 milllion packets. The " input errors" counter will increment whenever the interface receives a frame with any sort of input error, which includes CRC among other types of errors. Each frame is only counted once, no matter how many types solution If runts and Cyclic Redundancy Check ( CRC) errors are incrementing in the show interface command output, or Frame Check Sequence. On Cisco IOS - based switches, the interface configuration commands to set the speed and duplex to auto are speed auto and duplex rial Lines: Increasing Input Errors in Excess of 1 Percent of Total Interface Traffic. If your CSU/ DSU does not support SCTE, you might have to disable SCTE on the Cisco router interface. Note Any input error value for cyclic redundancy check ( CRC) errors, framing errors, or aborts above 1 percent of the total te: Any input error value for cyclic redundancy check ( CRC) errors,. data converters when you are connecting a router to a WAN or serial network.