ArcticWolf Posted February 12, 2006 CID Share Posted February 12, 2006 Awhile back I had Bell Sympatico high speed....and I got a Speedstream 6520 modem/router combo in one from Bell.... I canceled My service with them about 3 months ago because I found a cheaper provider for the same speed download and more speed upload. But if I go to configure the router of course entering 192.168.#.# , it comes up with the Bell screen and how to set it up.... I have no problem with that.... but nowhere in the settings or advanced settings can I change the MTU from it's dang 1452 to 1492 which it should be for PPPOE. Anyone have an idea on what I can do or where to change it? Thanks Link to comment Share on other sites More sharing options...
ArcticWolf Posted February 12, 2006 Author CID Share Posted February 12, 2006 Ok here is something that is weird, if I look at my router settings,under the Ethernet status, it says ports 1 & 2 ,which is both of my computers is saying I'm at 100M/Full duplex and both 1500MTU ... so why is it when I go to SpeedGuide.net it says MTU = 1452 MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings. MSS = 1412 MSS is not optimized for broadband. Consider increasing your MTU value. Default TCP Receive Window (RWIN) = 513920 RWIN Scaling (RFC1323) = 3 bits (scale factor of 6) Unscaled TCP Receive Window = 64240 For optimum performance, consider changing RWIN to a multiple of MSS. Other values for RWIN that might work well with your current MTU/MSS: 519616 (MSS x 46 * scale factor of 259808 (MSS x 46 * scale factor of 4) 129904 (MSS x 46 * scale factor of 2) 64952 (MSS x 46) bandwidth * delay product (Note this is not a speed test): Your TCP Window limits you to: 20556.8 kbps (2569.6 KBytes/s) @ 200ms Your TCP Window limits you to: 8222.72 kbps (1027.84 KBytes/s) @ 500ms MTU Discovery (RFC1191) = ON Time to live left = 53 hops TTL value is ok. Timestamps (RFC1323) = OFF Selective Acknowledgements (RFC2018) = ON IP type of service field (RFC1349) = 00000000 (0) Link to comment Share on other sites More sharing options...
ROM-DOS Posted February 12, 2006 CID Share Posted February 12, 2006 ArcticWolf ~ just off hand, would that be a Actiontec DSL w/Wireless Networking/Gateway Modem? The reason I ask is because that's what I have with my Qwest DSL setup. . .and it's not PPPOE, mines PPPoA and my Ethernet Link Speed I set to 10Mbps Half-Duplex and set all my IP settings in Internet Protocol (TCP/IP) Properties manually to get the DNS Servers to run right. LOL ~ I'm still learning about all the DSL settings and some things still aren't making alot of sense, 'cause the way I actually set my IP address and default gateway isn't my 'REAL' (WAN) IP address nor my default gateway!! . . .but it works. . . .like when you enter 192.168.X.X. in the address bar ~ my 'default gateway' would be Actiontec's Status/Setup modem configuration interface ~ 192.168.X.X ~ so my LAN setup is pretty generic compared to my WAN setup, which has my 'REAL' IP address and gateway. . . .anyway, my MTU is 1500 and went with these Cablenet Adjuster settings; for my Qwest DSL @ Download: 7168kbps Upload: 896kbps Latency: 100ms MTU: 1500 DefaultReceiveWindow = 917504 DefaultSendWindow = 114688 DisableAddressSharing = 1 InitialLargeBufferCount = 200 InitialMediumBufferCount = 480 InitialSmallBufferCount = 640 LargeBufferSize = 819200 MaxFastTransmit = 64000 MediumBufferSize = 150400 Priority Boost = 1 SmallBufferSize = 12800 TransmitWorker = 32 FastSendDatagramThreshhold = EnableFastRouteLookup = 1 EnablePMTUDiscovery = 1 IgnorePushBitsOnReceives = 0 GlobalMaxTcpWindowSize = 90520 MaxFreeTcbs = MaxHashTableSize = MaxNormLookupMemory = SackOpts = 1 SynAttackProtect = 1 Tcp1323Opts = 1 TcpLogLevel = 1 TcpMaxDupAttacks = 3 TcpMaxHalfOpen = 100 TcpMaxHalfOpenRetired = 80 TcpRecvSegmentSize = 1460 TcpSendSegmentSize = 1460 TcpTimedWaitDelay = 30 TcpUseRFC1122UrgentPointer = 0 TcpWindowSize = 90520 MaxConnectionsPer1_0Server = 20 MaxConnectionsPerServer = 10 DefaultTimeToLive = 64 DefaultUserTOSSetting = 1 TcpMaxDataRetransmissions = 6 DefaultTOSValue = 240 These have been known to effect some DSL connections. If you see some minor issues, blank out these settings: MaxNormLookupMemory MaxFreeTcbs MaxHashTableSize FastSendDatagramThreshhold [edit] . . .just changed Priority Boost = 1 and DefaultUserTOSSetting = 1 and got a noticable increase in speed test! [if you can, leave EnableFastRouteLookup = 1 ~ enables big increase w/speed] :::.. Download Stats ..::: Connection is:: 5335 Kbps about 5.3 Mbps (tested with 2992 kB) Download Speed is:: 651 kB/s Tested From:: https://testmy.net (server2) Test Time:: Sun Feb 12 05:28:11 PST 2006 Bottom Line:: 95X faster than 56K 1MB download in 1.57 sec Diagnosis: Awesome! 20% + : 140.21 % faster than the average for host (qwest.net) Validation Link:: https://testmy.net/stats/id-XTM0WSO4R :::.. Upload Stats ..::: Connection is:: 762 Kbps about 0.8 Mbps (tested with 579 kB) Upload Speed is:: 93 kB/s Tested From:: https://testmy.net (server1) Test Time:: Sun Feb 12 05:29:39 PST 2006 Bottom Line:: 14X faster than 56K 1MB upload in 11.01 sec Diagnosis: Awesome! 20% + : 61.1 % faster than the average for host (qwest.net) Validation Link:: https://testmy.net/stats/id-KYBRXEMAP . . .not quite my 'advertised' speeds ~ but as fast as I can get it for now ~ lol Cablenut Adjuster is always a tweak in progress ~ for me ~ [edit, again] . . .now you got me all disconbobblated ~ I went to; HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpipParameters and my DefaultMSS REG_SZ is 1452 and MTU REG_DWORD is 1492 in Interfaces my MTU is also 1492 . . .oh no, I'll try re-calculating my settings and see if it 'really' makes a difference! . . .just when I thought I had it right ~ lol Link to comment Share on other sites More sharing options...
ROM-DOS Posted February 12, 2006 CID Share Posted February 12, 2006 ArcticWolf ~ with new settings; Download: 7168kbps Upload: 896kbps Latency: 100ms MTU: 1492 DefaultReceiveWindow = 917504 DefaultSendWindow = 114688 DisableAddressSharing = 1 InitialLargeBufferCount = 200 InitialMediumBufferCount = 480 InitialSmallBufferCount = 640 LargeBufferSize = 819200 MaxFastTransmit = 64000 MediumBufferSize = 150400 Priority Boost = 1 SmallBufferSize = 12800 TransmitWorker = 32 FastSendDatagramThreshhold = EnableFastRouteLookup = 1 EnablePMTUDiscovery = 1 IgnorePushBitsOnReceives = 0 GlobalMaxTcpWindowSize = 90024 MaxFreeTcbs = MaxHashTableSize = MaxNormLookupMemory = SackOpts = 1 SynAttackProtect = 1 Tcp1323Opts = 1 TcpLogLevel = 1 TcpMaxDupAttacks = 3 TcpMaxHalfOpen = 100 TcpMaxHalfOpenRetired = 80 TcpRecvSegmentSize = 1452 TcpSendSegmentSize = 1452 TcpTimedWaitDelay = 30 TcpUseRFC1122UrgentPointer = 0 TcpWindowSize = 90024 MaxConnectionsPer1_0Server = 20 MaxConnectionsPerServer = 10 DefaultTimeToLive = 64 DefaultUserTOSSetting = 1 TcpMaxDataRetransmissions = 6 DefaultTOSValue = 240 :::.. Download Stats ..::: Connection is:: 5336 Kbps about 5.3 Mbps (tested with 2992 kB) Download Speed is:: 651 kB/s Tested From:: https://testmy.net (server2) Test Time:: Sun Feb 12 06:20:59 PST 2006 Bottom Line:: 95X faster than 56K 1MB download in 1.57 sec Diagnosis: Awesome! 20% + : 140.14 % faster than the average for host (qwest.net) Validation Link:: https://testmy.net/stats/id-F0R2PW5M7 :::.. Upload Stats ..::: Connection is:: 766 Kbps about 0.8 Mbps (tested with 579 kB) Upload Speed is:: 93 kB/s Tested From:: https://testmy.net (server1) Test Time:: Sun Feb 12 06:22:34 PST 2006 Bottom Line:: 14X faster than 56K 1MB upload in 11.01 sec Diagnosis: Awesome! 20% + : 61.6 % faster than the average for host (qwest.net) Validation Link:: https://testmy.net/stats/id-8LT3CRVPY . . .not much difference, but when I did the TCP/IP Analyzer it still shows MTU as 1500!! MTU = 1500 MTU is fully optimized for broadband. MSS = 1460 Maximum useful data in each packet = 1460, which equals MSS. Default TCP Receive Window (RWIN) = 917504 RWIN Scaling (RFC1323) = 4 bits (scale factor of Unscaled TCP Receive Window = 57344 For optimum performance, consider changing RWIN to a multiple of MSS. Other values for RWIN that might work well with your current MTU/MSS: 513920 (MSS x 44 * scale factor of 256960 (MSS x 44 * scale factor of 4) 128480 (MSS x 44 * scale factor of 2) 64240 (MSS x 44) bandwidth * delay product (Note this is not a speed test): Your TCP Window limits you to: 36700.16 kbps (4587.52 KBytes/s) @ 200ms Your TCP Window limits you to: 14680.064 kbps (1835.008 KBytes/s) @ 500ms MTU Discovery (RFC1191) = ON Time to live left = 54 hops TTL value is ok. Timestamps (RFC1323) = OFF Selective Acknowledgements (RFC2018) = ON IP type of service field (RFC1349) = 00000000 (0) Link to comment Share on other sites More sharing options...
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