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Cisco Bug: CSCta03608 - counter mismatch between Rx and Tx side for the FR subif

Last Modified

Jan 07, 2017

Products (1)

  • Cisco 12000 Series Routers

Known Affected Releases

3.8.2.BASE 3.9.0.BASE 4.0.0.BASE

Description (partial)

    o/p of <CmdBold>show inteface <CmdArg>main interface<noCmdArg><noCmdBold>
and <CmdBold>show interface <CmdArg>sub interface<noCmdArg><noCmdBold> may not
match. Total sub interface counts(for all sub interfaces under the main
interface) may be larger on the egress side or smaller on the ingress side.
FR subinterface counters are taken from the engine, while main interface
counters are taken from the spa. This can result in a mismatch of counters at
sub interface and main interface levels.
    This mismatch is seen between FR sub interfaces and main interface counts.
    Mismatch occurs when packet rate becomes more than what the queuing asic
can handle. This results in a queuing asic drop and a  difference in main
    interface and sub interface counts.
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