Hi All,
I have been having issue with hotspot customers connected to repeater stations via vlans, They are not able to access some website yet other customers connected via (mikrotik Rb816 -> lan5 -> access point -> client) work fine, i suspect its mtu related. I have tried to correct the issue by using the mangle rules from other forms also tried changing the mtu on the vlan and in the ubiquiti routers vlan interface at the AP end. Please see network diagram. When i change the mms in mangle rules it is reflected in the SpeedGuide.net TCP Analyzer Results. i have tried calculated mms changes to extreme changes with no results.
your help would be greatly appreciated.
Kind Regards
Paul
More Infomation:
Client 2 & 3 cannot load website branchline.com.au
Client 2 & 3 can ping branchline.com.au
Pinging branchline.com.au [116.240.198.12] with 32 bytes of data:
Reply from 116.240.198.12: bytes=32 time=60ms TTL=55
Reply from 116.240.198.12: bytes=32 time=83ms TTL=55
Reply from 116.240.198.12: bytes=32 time=46ms TTL=55
Reply from 116.240.198.12: bytes=32 time=45ms TTL=55
Ping statistics for 116.240.198.12:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 45ms, Maximum = 83ms, Average = 58ms
Trace Route client 2 & 3
Tracing route to branchline.com.au [116.240.198.12]
over a maximum of 30 hops:
1 1 ms 1 ms 1 ms ap.mydomain.net.au [10.20.1.1]
2 27 ms 41 ms 72 ms 122-148-3-185.core.dodo.com.au [122.148.3.185]
3 108 ms 175 ms 77 ms 122-148-4-34.core.dodo.com.au [122.148.4.34]
4 34 ms 35 ms 32 ms as9443.sydney.pipenetworks.com [218.100.2.44]
5 31 ms 66 ms 35 ms irb-5.csr02.syd.iprimus.net.au [210.50.143.161]
6 69 ms 70 ms 72 ms xe-3-1-0.csr02.mel.iprimus.net.au [203.134.2.58]
7 56 ms 45 ms 47 ms vl05.sw02.mel.iprimus.net.au [210.50.233.194]
8 43 ms 44 ms 44 ms ge5-1.sw02.mel.idc.iprimus.net.au [210.50.0.22]
9 81 ms 44 ms 44 ms sb4-299.ivt.com.au [116.240.198.12]
10 52 ms 46 ms 44 ms sb4-299.ivt.com.au [116.240.198.12]
Trace complete.
« SpeedGuide.net TCP Analyzer Results »
Tested on: 2013.01.04 12:57
IP address: 122.150.xxx.xxx
Client OS/browser: Windows XP (Internet Explorer 6.0)
TCP options string: 020405a00103030301010402
MSS: 1440
MTU: 1480
TCP Window: 522720 (multiple of MSS)
RWIN Scaling: 3 bits (2^3=8)
Unscaled RWIN : 65340
Recommended RWINs: 63360, 126720, 253440, 506880, 1013760
BDP limit (200ms): 20909kbps (2614KBytes/s)
BDP limit (500ms): 8364kbps (1045KBytes/s)
MTU Discovery: ON
TTL: 112
Timestamps: OFF
SACKs: ON
IP ToS: 01000000 (64)
Precedence: 010 (immediate)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DSCP (DiffServ): CS2 010000 (16) - class 2 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.
/ip firewall mangle
0 chain=forward action=change-mss new-mss=1440 passthrough=yes tcp-flags=syn
protocol=tcp hotspot=auth tcp-mss=1440-65535