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New Member

Packet drops to self ip above 1500 size???

Hi all,

We are facing ip packet drops to most of the subinterface with packet size of 1500,we have configured ratelimit also,

Please Find Below details and kinldy explane why we are observe packet drops and how to resolve it.

Kinldy help.

interface GigabitEthernet0/3

mtu 1526

no ip address

ip flow ingress

load-interval 30

duplex full

speed 1000

media-type gbic

no negotiation auto

no cdp enable

==============

interface GigabitEthernet0/3.253

description *************************

encapsulation dot1Q 253

ip vrf forwarding X-X_X

ip address 192.168.251.113255.255.255.252

rate-limit input access-group 199 3072000 576000 1152000 conform-action transmit exceed-action drop

rate-limit output access-group 199 3072000 576000 1152000 conform-action transmit exceed-action drop

Extended IP access list 199

    10 permit ip any any (1246660177 matches)

========================

Router1#sh int GigabitEthernet0/3

  Input queue: 0/75/5390/0 (size/max/drops/flushes); Total output drops: 403657

========================

Router1#pin vrf X-X_X 192.168.251.113 df-bit size 1500 repeat 500

Type escape sequence to abort.

Sending 500, 1500-byte ICMP Echos to 192.168.251.113, timeout is 2 seconds:

Packet sent with the DF bit set

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!

Success rate is 99 percent (499/500), round-trip min/avg/max = 1/1/4 ms

Router1#pin vrf X-X_X 192.168.251.113 df-bit size 500 repeat 500

Type escape sequence to abort.

Sending 500, 500-byte ICMP Echos to 192.168.251.113, timeout is 2 seconds:

Packet sent with the DF bit set

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!

Success rate is 100 percent (500/500), round-trip min/avg/max = 1/1/20 ms

Router1#

========================

Regards,

Raaam.

4 REPLIES

Packet drops to self ip above 1500 size???

Hello.

I guess you rate-limit is doing packet drops; what is the reason for rate-limit?

Have you checked interface utilization?

New Member

Packet drops to self ip above 1500 size???

Hi Mik

         Utilization is seems to be normal, and the reason for the rate limit is for limiting the BW.

We observing packet drops to self ip Itself.

Regards,

Ram

Packet drops to self ip above 1500 size???

Hello.

Per my understanding rate-limit is applied to self pings as well.

PS: I would suggest to update you rate-limit to MQC (HFQ) for ease of troubleshooting and additional features.

New Member

Packet drops to self ip above 1500 size???

Hi Mik,

          Your suggestion is on knot , but we couldnt upgrade to HQF now as it is working for long time . We are suspecting L1 issue .

Regards,

Ram

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