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error log

Hi,

We check the route 7301 and got following error.

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Jul 4 12:17:02 HK: %IF-4-BACKWARD_COUNTERS: Corrected for backward rx_bytes counters (22876466833 -> 18582080142) on GigabitEthernet0/1

Jul 4 23:25:18 HK: %IF-4-BACKWARD_COUNTERS: Corrected for backward rx_bytes counters (22010401024 -> 17715588712) on GigabitEthernet0/1

Jul 5 21:39:34 HK: %IF-4-BACKWARD_COUNTERS: Corrected for backward rx_bytes counters (23660729840 -> 19366416833) on GigabitEthernet0/1

Jul 6 22:38:30 HK: %IF-4-BACKWARD_COUNTERS: Corrected for backward rx_bytes counters (27476268276 -> 18886801592) on GigabitEthernet0/1

Jul 7 16:24:55 HK: %IF-4-BACKWARD_COUNTERS: Corrected for backward rx_bytes counters (23978589733 -> 19684266466) on GigabitEthernet0/1

Jul 8 12:52:51 HK: %IF-4-BACKWARD_COUNTERS: Corrected for backward rx_bytes counters (24486307270 -> 20191951830) on GigabitEthernet0/1

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we check the cisco web site but it doesn't say more. Do you have any idea regarding this error? please advise

Best regards

1 REPLY
Cisco Employee

Re: error log

This means that the interface specified in the message has a packet counter that has decreased in number.

This condition can occur if a packet is

counted and then dropped. This event was detected and corrected.

BACKWARD counters message means/indicates that the RSP detected a negative count with time. i.e. with time, interface counter values on the VIP interfaces are monitored/updated by RSP and RSP expects these counts to be positive and increasing; however when it gets two count values A and B at times t0 and t1 respectively (where t0 is less than t1), it computes the difference B minus A and when it seees this

difference as negative, it prints the following message and corrects the

negative count.

This could be a normal message when a link is indeed loaded.

However, a bug has been filed regarding seeing this error message observed on multilink interfaces.

CSCef68698

%IF-4-BACKWARD_COUNTERS: Corrected for backward rx_bytes counters

In summary, the error message is related to counter so it would not affect the operation

of the network.

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