05-16-2016 06:22 AM - edited 03-05-2019 04:01 AM
Hi All,
I have a strange issue with one of my customer where they are reporting off slow transfer rates between sites.
Site 1 ---> Site 2 - File access is slower compared to other-way around
QOS being setup to prioritize the traffic and not helping in any ways.
Any clue on where to start tshoot with.
Any Help comment much appreciated.
05-16-2016 07:21 AM
Can you check what is the QoS configuration on the PE connecting to Site 1 and Site 2. It may be possible that Site 2 might have some outbound qos policy configured.
Also, another quick way to test or isolate the SP network would be to attach a dummy CE at both site 1 and site 2 locations (locally in ur SP network not on the customer premises) and test teh file transfer.
Please share the configuration from both PE routers.
Regards
Vinit
05-16-2016 11:48 AM
If this is Windows CIFS file transfer (??) be aware that there may be window size differences; particularly if you have windows server at one end and workstation at the other. This doesn't normally affect you much on a LAN, but on a WAN link, even if your FRAME size is standard ethernet, the window size for the file transfer may be different. Run wireshark during a transfer, and it may give you that information.
Another thing could be fragmentation. If somewhere along the path you have a lower MTU than the endpoints, packets may be split and causing additional delay.
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