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Nelesh_N

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Ping times between AD replication partners

I have a couple WAN sites whose DC in continuously showing KCC event problems.
Will these response times cause these issues? What is the acceptable response times for replication partners?

Reply from 163.202.149.2: bytes=32 time=29ms TTL=120
Reply from 163.202.149.2: bytes=32 time=21ms TTL=120
Reply from 163.202.149.2: bytes=32 time=23ms TTL=120
Reply from 163.202.149.2: bytes=32 time=22ms TTL=120
Reply from 163.202.149.2: bytes=32 time=74ms TTL=120
Reply from 163.202.149.2: bytes=32 time=14ms TTL=120
Reply from 163.202.149.2: bytes=32 time=22ms TTL=120
Reply from 163.202.149.2: bytes=32 time=17ms TTL=120
Reply from 163.202.149.2: bytes=32 time=29ms TTL=120
Reply from 163.202.149.2: bytes=32 time=47ms TTL=120
Reply from 163.202.149.2: bytes=32 time=34ms TTL=120
Reply from 163.202.149.2: bytes=32 time=25ms TTL=120
Reply from 163.202.149.2: bytes=32 time=46ms TTL=120
Reply from 163.202.149.2: bytes=32 time=35ms TTL=120
Reply from 163.202.149.2: bytes=32 time=237ms TTL=120
Reply from 163.202.149.2: bytes=32 time=258ms TTL=120
Reply from 163.202.149.2: bytes=32 time=322ms TTL=120
Reply from 163.202.149.2: bytes=32 time=89ms TTL=120
Reply from 163.202.149.2: bytes=32 time=101ms TTL=120
Reply from 163.202.149.2: bytes=32 time=268ms TTL=120
Reply from 163.202.149.2: bytes=32 time=145ms TTL=120
Reply from 163.202.149.2: bytes=32 time=40ms TTL=120
Reply from 163.202.149.2: bytes=32 time=31ms TTL=120
Reply from 163.202.149.2: bytes=32 time=27ms TTL=120
Reply from 163.202.149.2: bytes=32 time=53ms TTL=120
Reply from 163.202.149.2: bytes=32 time=66ms TTL=120
Reply from 163.202.149.2: bytes=32 time=38ms TTL=120
Reply from 163.202.149.2: bytes=32 time=34ms TTL=120
Reply from 163.202.149.2: bytes=32 time=23ms TTL=120
Reply from 163.202.149.2: bytes=32 time=31ms TTL=120
Reply from 163.202.149.2: bytes=32 time=34ms TTL=120
Reply from 163.202.149.2: bytes=32 time=17ms TTL=120
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ujitnos
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Avatar of Tomas Valenta
Tomas Valenta
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This is normal ping response over Internet. The problem should be packet losts - do you have any ?
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mattconroy
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Log on to one of the DC's and run a command prompt and type replmon.
Add all the DC's in your Forest/Domain.
Respond back with any errors that you are receiving.

The ping response times look OK.

Also,
Send a Ping with the optional parameter -l 4096 to increase the packet size that you are pinging with.
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Awinish
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KCC errors are not big error, you have to check which DC is replicating to which dc & is the correct connection objects are created or not.
Also, verify sites & subnet mapping. Check link created for selecting replication partners.

Run repadmin /syncall /A/E/P/D

Above command will sync all the dc,if error comes with any DC will be seen.