traffic shaping in Sophos XG18

Question

hi, 
 1)the ISP provides us bandwidth of say 100Mbps (mega bits per second). when i see the system graphs it show the interface data transfer in KBits/s (kilo bits). 
 in traffic shaping window i am unable to understand what KB/s stands for, whether it is Kilobytes or Kilobits (screenshot attached) 
 
 2) and also if we configured our wifi router i.e. 192.168.20.41 as clientless user, we should select bandwidth usage type as individual or shared while assigning Traffic shaping policy as there may be 20 users connected to that wifi router. ? 
 please suggest

FormerMember · Accepted Answer

Correct, the bandwidth measurement is in KiloBit per second, and converting 10005 Kbits to Mbits would yield ~10 Mbps. 
 This graph shows the current utilization of the interface 10Mbps is being utilized. You can also use the command in the console > system diag utilities bandwidth-monitor (Option 4 after taking SSH).

FormerMember · Answer

Hi, Thanks for reaching out to Sophos Community. ISPs usually provide speeds in Mbps (Megabit per second) as you've mentioned. XG measures bandwidth by KiloByte per second (KB/second). As 1 byte == 8 bit, Following this method backward, You get 0.25 byte for 1 bit. In the same way, 1 Megabit (Mbps) == 125 KiloByte (KBps). This way if you want to set restrictions for about 10 Mbps for a user, keep the QoS to 1250 KBps (125x10). In short, You can always multiply the Mbps you want to allow/restrict to users with 125 and that'll give you speeds in KBps. For the second question, Keeping "Individual" will be allowing the configured bandwidth to each user, and "Shared" will share the defined bandwidth amongst users. But If you're using the WiFi router in gateway mode (Router serves the DHCP and NATs req going forward to XG), XG will be seeing all the traffic coming from that router as a single IP/User and QoS wouldn't work as expected. 
 Hope this helps :)

traffic shaping in Sophos XG18

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