[c-nsp] NCS540 - Interface up, not passing traffic

[Eric Van Tol]

To all, thanks for the suggestions. This issue turned out to be the SFP. Re-seating it fixed the issue. I'll have to look into a possible upgrade if I can find that any SFP-related bugs are resolved in any releases higher than 7.1.1.

evt

On 12/4/20, 12:56 PM, "Alexandr Gurbo" <gurbo at golas.ru> wrote:

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    Hello,

    If possible, replace SFP transceiver or try to use monitor-session on interface for capture traffic.
    By my opinion your IOS XR version isn't good and "raw", try to upgrade. At the end this year expected 7.3.x, but I'm waitin 7.4.x....

    Guess this command was viewed and nothing interesting founded.
    RP/0/RP0/CPU0:xxx#show controllers tenGigE 0/0/0/20 all

    May be some intresting information you can find here:
    RP/0/RP0/CPU0:xxx#run
    [node0_RP0_CPU0:~]$ls -la /var/log


    On Fri, 4 Dec 2020 16:39:38 +0000
    Eric Van Tol <eric at atlantech.net> wrote:

    > Also great suggestions, but to no avail. 0 packets input on either side. :(
    >
    > I might be stuck with having to reboot one or both of these devices if the SFP re-insertion doesn't resolve it.
    >
    > evt
    >
    > On 12/4/20, 11:24 AM, "Gert Doering" <gert at greenie.muc.de> wrote:
    >
    >     Hi,
    >
    >     On Fri, Dec 04, 2020 at 03:09:33PM +0000, Eric Van Tol wrote:
    >     > Yeah, I've also had weird experiences with the ASR, but the difference here is that the port is up on both sides, and consistently comes up when the interface is shut/no shut, whereas in every instance we've had such weirdness, the port would not come up at all on the ASR. Definitely not ruling it out, it's just different behavior than I've seen before. Regardless, I'll keep the ASR in mind as a possible source of the problem.
    >
    >     Try enabling LLDP or CDP and see if you can see anything.
    >
    >     Try looking on the "show int ten... accounting" counters to see if
    >     either side receives what the other side claims to be sending.
    >
    >     The link might be good, but the IP layer might be confused...   or
    >     one side might be sending ok, but not receiving anything.
    >
    >     Counters good.
    >
    >     gert
    >
    >     --
    >     "If was one thing all people took for granted, was conviction that if you
    >      feed honest figures into a computer, honest figures come out. Never doubted
    >      it myself till I met a computer with a sense of humor."
    >                                  Robert A. Heinlein, The Moon is a Harsh Mistress
    >
    >     Gert Doering - Munich, Germany                             gert at greenie.muc.de
    >
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    --
    Alexandr Gurbo <gurbo at golas.ru>