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rajamanickam
Explorer II
March 21, 2022
Question

SDWAN - Control SMB file transfer traffic

  • March 21, 2022
  • 2 replies
  • 3563 views

Hi, I have a 300Mbps WAN link. I have below queries

 

1 If I have just one PC on network which is allowed to do a file transfer to one of the DC server. Whether this transfer can utilize the full bandwidth of 300Mbps - Means transfer rate at around 38mB/Sec (Assume I haven't configured any traffic shaper).  Or is there any default mechanism available in Fortigate to not allow these kind of burst traffic within stipulated time?.. My thought is , if there is no mechanism and without traffic shaper, two or three PCs on network can easily utilize this full bandwidth leaving very less bandwidth for other applications. I can understand that we can limit this with traffic shaper, but I would like to know whether any default mechanism available to control this (Like token/bucket limit etc).

 

2. My second query is , even if I do traffic shaping and restricting the bandwidth to 50Mbps. There is a chance that first few clients starting the file transfer can easily occupy the bandwidth. On this scenario, how we can control the traffic spikes for each client. (Without per-IP shaper).

 

Regards

Raja

 

2 replies

AlexC-FTNT
Staff
Staff
March 22, 2022

1. TCP congestion mechanisms are sufficient to slow down traffic when saturation is reached. No other mechanism exists in FortiGate (to my knowledge). 

2.  You can set up a guaranteed BW in the traffic shaper

https://docs.fortinet.com/document/fortigate/6.4.5/administration-guide/933502/shared-traffic-shaper

rajamanickam
Explorer II
March 31, 2022

Thank you Alex

NESA
Visitor III
August 16, 2022

Did you fix your problem?

rajamanickam
Explorer II
August 18, 2022

No, I am just controlling this burst with some bandwidth allocation for such traffics.. (Like SMB)