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CRS-1 ping packet loss

Hi everyone,

CRS1 IOS-XR 3.8  when i try to ping packet option and got packet loss as below and don't sure that XR limit for ping or not?

RP/0/RP0/CPU0:#ping 10.0.0.1 size 3000 count 1000   (ping to outside switch 3750)

Mon Oct  8 10:12:34.582 THAI

Type escape sequence to abort.

Sending 1000, 3000-byte ICMP Echos to 10.0.0.1, timeout is 2 seconds:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

if i user size 1500 don't have packet losss.

Can anyone explanation to me?

Thanks alot.

Kodos.

Everyone's tags (5)
1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

CRS-1 ping packet loss

Yes, the CRS will limit the amount of traffic that is punted to the RP.  This is done on the ingress linecard by LPTS.

By increasing the packet size you are most likely hitting the limit.

2 REPLIES 2
Cisco Employee

CRS-1 ping packet loss

Yes, the CRS will limit the amount of traffic that is punted to the RP.  This is done on the ingress linecard by LPTS.

By increasing the packet size you are most likely hitting the limit.

Beginner

CRS-1 ping packet loss

Hello,

Above result is PING from CRS-1 to another switch, we try to vary packet size and found that if its size greather than 2800 then we always get 4 packets loss from 1000.

Can you please advice?

Thanks,

Rojarek

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