CONTACTS
SUBJECTS
LAN Slow Windows 7 DTR Ethernet 1010 Network Rated 100 Mbps = 12 MB/
0803 -
0803 - ..
0804 - Summary/Objective
0805 -
080501 - Follow up ref SDS 8 264H.
080502 -
080503 - Copying and moving files between computers on the network has been
080504 - very slow in recent months, perhaps the past year, and possibly
080505 - forever. Review today indicates Windows 7 operating system settings
080506 - might be adjusted to improve performance. ref SDS 0 SI5G The only
080507 - change that increased speed was disabling the wireless connection.
080508 - ref SDS 0 EO8O This was done, and seemed to improve performance, but
080509 - later when wireless connection was running, faster DTR seemed to
080510 - continue. ref SDS 0 AN4L
080511 -
080512 -
080513 -
080514 -
080515 -
080517 - ..
0806 -
0807 -
0808 - Progress
0809 -
080901 - Data transfer rates between computers c18, c20, and c21 on LAN are
080902 - very slow using Ethernet 1010 cable connections. Seems this is
080903 - slower than downloading files from the Internet.
080905 - ..
080906 - Transferring very large volume of files shows only 1.5 MB/second.
080908 - ..
080909 - The system seems to be rated at 100 Mbps.
080910 -
080911 - [On 130714, ordered from Amazon high speed router and
080912 - cables to improve network speed. ref SDS 9 SI5G
080914 - ..
080915 - [On 130715 0103 at 0305 Amazon order 104-3948262-6593861
080916 - Arris model R6300 modem to replace Comcast modem, improve
080917 - performance of existing LAN and wireless support, and save
080918 - rental charges. ref SDS 10 526K
080920 - ..
080921 - Research found...
080922 -
080923 - SYSPROBS
080924 -
080925 - Windows 7 Network Slow ? 6 Easy Ways to Make it Fast
080926 -
080927 - http://www.sysprobs.com/windows-7-network-slow
080929 - ..
080930 - December 9, 2009
080932 - ..
080933 - By.......... Dinesh
080935 - ..
080936 - Windows 7 got some improved features than Vista including
080937 - speed of network. Sometimes you may notice the network
080938 - slowness compare to XP due to more advanced features and
080939 - requirements. These 6 easy steps to help solving Windows 7
080940 - network slow problem by disabling some features.
080942 - ..
080943 - Network is a major factor in computing. Windows 7 computers
080944 - will be slow in accessing shares on old MS Windows servers and
080945 - non MS Operating systems including Sun and Linux. Accessing
080946 - data and transferring data over network are still problem in
080947 - this case. Resolving DNS requests internally (LAN or WAN) and
080948 - externally (Internet) also could be slow in Windows 7. The
080949 - following methods I?m listing out is worked for me to speed up
080950 - Windows 7 networking with NT,2003 and Sun servers.
080952 - ..
080953 - How to Fix Windows 7 network slow problem?
080954 -
080955 - 1. Disable Autotuning
080956 -
080957 - Disabling autotuning will help much on DNS lookup and
080958 - network discovery. It improves the data transfer speed
080959 - also over the network. Disabling autotuning in windows 7
080960 - is very similar to Windows vista method. Read more here
080961 - about disabling autotuning in windows vista.
080963 - ..
080964 - Start command prompt as administrator, and follow the
080965 - commands as shown in below example.
080966 -
080967 - c:\windows\system32>netsh interface tcp show global
080969 - ..
080970 - TCP Global Parameters
080971 - ----------------------------
080972 - Receive-Side Scaling State : enabled
080973 - Chimney Offload State : automatic
080974 - NetDMA State : enabled
080975 - Direct Cache Acess (DCA) : disabled
080976 - ** Receive Window Auto-Tuning Level : normal
080977 - Add-on Congestion Control Provider : none
080978 - ECN Capability : disabled
080979 - RFC 1323 Timestamps : disabled
080980 -
080981 -
080982 - c:\windows\system32>Netsh interface tcp set global autotuning=disabled
080983 - c:\windows\system32>Netsh interface tcp set global autotuning=enabled
080984 -
080985 - c:\windows\system32>netsh interface tcp show global
080987 - ..
080988 - TCP Global Parameters
080989 - ----------------------------
080990 - Receive-Side Scaling State : enabled
080991 - Chimney Offload State : automatic
080992 - NetDMA State : enabled
080993 - Direct Cache Acess (DCA) : disabled
080994 - ** Receive Window Auto-Tuning Level : disabled
080995 - Add-on Congestion Control Provider : none
080996 - ECN Capability : disabled
080997 - RFC 1323 Timestamps : disabled
080998 -
081000 - ..
081001 - 2. Remove RDC ( Remote Differential Compression)
081002 -
081003 - This feature introduced with Windows Vista to transfer data
081004 - over network in compressed format. The same RDC feature
081005 - continued in Windows 7 also. Since most of the old
081006 - operating systems came before vista do not support this RDC
081007 - feature, it slows down network data transfer in windows 7.
081008 - You can remove this RDC (Remote Differential Compression)
081009 - in windows 7 by visiting control panel and programs and
081010 - features. Click on ?Turn Windows features on or off?, as
081011 - shown below.
081013 - ..
081014 - Control Panel
081015 - Programs
081016 - Programs and Features
081017 - Turn Widows features on or off
081019 - ..
081020 - Remove tick on....
081021 -
081022 - Remote Differential Compression [...turn off...]
081023 -
081024 -
081026 - ..
081027 - 3. Remove IPv6 from network properties.
081028 -
081029 - If your internal or external networks do not require
081030 - IPv6 protocol, better remove it under network connection
081031 - properties. Keeping IPv6 in your computer sometimes slows
081032 - down network by trying to register IPv6 addresses, or
081033 - trying to get IPv6 address, or trying to resolve IPv6.
081034 - Better remove it if it's not required.
081036 - ..
081037 - 4. Clear DNS Cache
081038 -
081039 - You can remove any DNS cache from computer, so next time
081040 - DNS request will be solved by updated DNS server. This
081041 - will avoid your computer to try broken or changed DNS
081042 - records from cache. To clear DNS cache, open command
081043 - prompt as administrator and type ipconfig /flushdns
081045 - ..
081046 - 5. Disable Wireless Network and any additional (including
081047 - Virtual adapters) network adapters.
081049 - ..
081050 - If you will not be using wireless network or it?s your
081051 - secondary network, I recommend you to disable wireless
081052 - network in windows 7 under network connection. If it?s
081053 - enabled, windows 7 computer will be trying to connect
081054 - available wireless network around you, and trying to login
081055 - though its network. Loading your profiles and start up
081056 - programs will be slow while booting because of this.
081058 - ..
081059 - 6. Modifying Link Speed & Duplex Value in Network adapter
081060 - Properties.
081062 - ..
081063 - This step also helps sometimes when you face problem with
081064 - windows 7 network slow. I can't say which option will work
081065 - better, because it depends on your physical network setup
081066 - (network adapter, cable type, LAN speed and network
081067 - switch). By default it is set for Auto Negotiation. But
081068 - you can play around with Value options and find out which
081069 - is working better for your computer and network.
081070 -
081071 -
081073 - ..
081074 - Article on TCP Tuning in Wikipedia...
081075 -
081076 - http://webcache.googleusercontent.com/search?q=cache:vMfj4sO7JYQJ:en.wikipedia.org/wiki/TCP_tuning+automatic+adjustment+for+%22TCP+window+size%22&cd=1&hl=en&ct=clnk&gl=ca
081077 -
081079 - ..
081080 - Firewall disable is proposed as another step to increase DTR on
081081 - network file ops.
081083 - ..
081084 - Tried...
081085 -
081086 - 1. Autotuning Disable..................... ref SDS 0 FP9M
081087 - 2. Wireless Network Disable............... ref SDS 0 EO8O
081088 - 3. Remove RDC............................. ref SDS 0 NY4J
081089 - 4. Firewall Disable....................... ref SDS 0 ND3I
081091 - ..
081092 - The only change that seemed to improve speed was disabling wireless
081093 - network. DTR copy from c21 to c18 starts at 12 MB/s, then drops to
081094 - about 2 MB/s. This is better than 700 KB/s, but very, very slow.
081096 - ..
081097 - Copying from c18 to c20 DTR starts at 700 KB/s.
081099 - ..
081100 - Wireless network automatically connects when OS is executed.
081102 - ..
081103 - Actually, later doing more data transfers after booting computers
081104 - discovered that DTR seems just as fast with wireless connected.
081105 - Sometimes it runs steadily at 10 - 14 MB/s and other times it drops
081106 - below 1 MB/s.
081107 -
081108 - [On 130714, ordered from Amazon high speed router and
081109 - cables to improve network speed. ref SDS 9 SI5G
081111 - ..
081112 - [On 130715 0103 at 0305 Amazon order 104-3948262-6593861
081113 - Arris model R6300 modem to replace Comcast modem, improve
081114 - performance of existing LAN and wireless support, and save
081115 - rental charges. ref SDS 10 526K
081116 -
081117 -
081118 -
081120 - ..
081121 - Network Speed Performance Router Cables Adapters
081122 -
081123 - Research over the next week discovered that data transfer rate (DTR -
081124 - speed) transmitting files and data across a home network depends on 3
081125 - components... CPU lan adapter, cables and router. The fastest
081126 - throughput is the slowest of the these 2 components.
081128 - ..
081129 - Many office and most home local area networks (LAN) use Ethernet
081130 - technology, explained in Wikipedia...
081131 -
081132 - http://en.wikipedia.org/wiki/Ethernet_over_twisted_pair
081134 - ..
081135 - Ethernet over twisted pair technologies use twisted-pair
081136 - cables for the physical layer of an Ethernet computer network.
081137 - Other Ethernet cable standards employ coaxial cable or optical
081138 - fiber.
081140 - ..
081141 - Early versions developed in the 1980s included StarLAN followed
081142 - by 10BASE-T. By the 1990s, fast, inexpensive technologies
081143 - began to emerge.
081145 - ..
081146 - Currently the most popular are 100BASE-TX (fast Ethernet) and
081147 - 1000BASE-T (gigabit Ethernet), running at 100 Mbit/s and 1000
081148 - Mbit/s (1 Gbit/s), respectively. These standards all use 8P8C
081149 - connectors.[note 1] Meanwhile higher-speed implementations
081150 - generally support lower-speed standards inclusively; thus it is
081151 - possible to mix different generations of equipment. Inclusive
081152 - capability is designated 10/100 or 10/100/1000- for connections
081153 - that support such combinations.[1]:123 The cables usually have
081154 - four pairs of wires (though 10BASE-T and 100BASE-TX only
081155 - require two of the pairs). The three standards support both
081156 - full-duplex and half-duplex communication.
081157 -
081159 - ..
081160 - Elements of Ethernet network...
081161 -
081162 - 1. LAN adapter
081163 -
081164 - 1. C18 ordered on 120314 with Premium Wireless-N LAN card and
081165 - Bluetooth(R) (2x2). ref SDS 2 LO8Y When the computer was
081166 - received on 120320, the same item was described as HP
081167 - Wireless 802.11 b/g/n PCIe Card (FH971AA), and cannot
081168 - determine high speed gigabit performance. 120320 1643.
081169 - ref SDS 3 XM46
081171 - ..
081172 - Device Manager shows.................... Realtck PCIe GBE Family Controller
081173 -
081174 - [On 130714 1701 letter to HP asks for product
081175 - identification and performance standard for LAN adapter
081176 - (NIC) installed in c18. ref SDS 9 BR5P
081178 - ..
081179 - [On 130716 0703 HP letter and referenced HP
081180 - specifications report that LAN adapters installed in c20
081181 - and c18 are both high speed gigabit LAN adapters that
081182 - meet 10/100/1000 Mbps standards. ref SDS 11 JI50
081184 - ..
081185 - [On 130716 1347 working with Sam at Netgear tested HP
081186 - network Ethernet adapter circuit board using direct
081187 - cable connection from RJ45 port in c18 to RJ45 in c20,
081188 - and found DTR 1 MB/s; failure to perform gigabit
081189 - standards, indicates HP did not install high speed
081190 - network adapters in c18 and c20. ref SDS 12 XA64 Device
081191 - Research on Internet shows customers report Realtck PCIe
081192 - GBE Family Controller fails to perform gigiabit
081193 - standards. ref SDS 12 SH4K
081195 - ..
081196 - 2. C20 ordered on 120602 with LAN Wireless Premium.
081197 - ref SDS 4 J46N Like c18, cannot determine product
081198 - specification performance from packing list received on
081199 - 120613 0928. ref SDS 5 XM46
081201 - ..
081202 - Device Manager shows.................... Realtck PCIe GBE Family Controller
081204 - ..
081205 - [On 130714 1701 letter to HP asks for product
081206 - identification and performance standard for LAN adapter
081207 - (NIC) installed in c20. ref SDS 9 TN3I
081209 - ..
081210 - [On 130716 0703 HP letter and referenced HP
081211 - specifications report that LAN adapters installed in c20
081212 - and c18 are both high speed gigabit LAN adapters that
081213 - meet 10/100/1000 Mbps standards. ref SDS 11 JI50
081215 - ..
081216 - [On 130716 1347 working with Sam at Netgear tested HP
081217 - network Ethernet adapter circuit board using direct
081218 - cable connection from RJ45 port in c18 to RJ45 in c20,
081219 - and found DTR 1 MB/s; failure to perform gigabit
081220 - standards, indicates HP did not install high speed
081221 - network adapters in c18 and c20. ref SDS 12 XA64 Device
081222 - Research on Internet shows customers report Realtck PCIe
081223 - GBE Family Controller fails to perform gigiabit
081224 - standards. ref SDS 12 SH4K
081225 -
081226 -
081227 - 3. c21 has high speed gigabit adapter, reported on 130313 1130.
081228 - ref SDS 7 TN3I
081230 - ..
081231 - Device Manager shows.................... Intel 82579V Gigabit Network Connection
081233 - ..
081234 - Since we don't know yet if c18 and c20 have high speed gigabit LAN
081235 - adapters, will evaluate these components after upgrading router and
081236 - cables.
081238 - ..
081239 - 2. Router - Netgear WNR1000v2 N150
081240 -
081241 - On 101027 received Netgear Rangemax WNR1000 N150; seems to be
081242 - identified on the Internet as having only Ethernet 10/100 rated at 150
081243 - Mbps (megabits per second. Therefore, it cannot handle gigabit
081244 - transmissions. ref SDS 1 W45N
081246 - ..
081247 - Need gigabit router for gigabit data transfers.
081248 -
081249 - [On 130714, ordered from Amazon high speed router and
081250 - cables to improve network speed. ref SDS 9 SI5G
081252 - ..
081253 - [On 130715 0103 at 0305 Amazon order 104-3948262-6593861
081254 - Arris model R6300 modem to replace Comcast modem, improve
081255 - performance of existing LAN and wireless support, and save
081256 - rental charges. ref SDS 10 526K
081258 - ..
081259 - 3. Cabling specifications were reviewed on 130309 1015.
081260 - ref SDS 6 NQ6L
081262 - ..
081263 - Currently we have...
081264 -
081265 - 1. Blue 50' catagory 6 Ethernet cable
081266 -
081267 - Connected from TP-Link Switch to Netgear router for
081268 - network access to computers and Internet
081270 - ..
081271 - This cable is adequate for high speed DTR.
081273 - ..
081274 - 2. Orange 10' Fastcat 5 Belkin 350 MHz Premium LAN Cable
081275 - UTP Cat 5 Patch cable
081276 -
081277 - Connected from TP-Link Switch to Tivo Ethernet port for
081278 - network access to computers and Internet
081279 -
081280 - This cable is faster than Cat5, and so replacing with
081281 - catagory 6 cable, can increase overall high speed DTR
081282 - to gigabit standards.
081284 - ..
081285 - 3. Black 6' Ethernet cable catagory unknown
081286 -
081287 - Connected from TP-Link Switch to c21 Ethernet port for
081288 - network access to computers and Internet
081289 -
081290 - This can be replaced with catagory 6 cable, to maintain
081291 - overall high speed DTR to gigabit standards.
081293 - ..
081294 - 4. White 7' Ethernet cable catagory 5
081295 -
081296 - Connected from c18 to Netgear router for network access
081297 - to computers and Internet
081298 -
081299 - This can be replaced with catagory 6 cable, to increase
081300 - overall high speed DTR to gigabit standards.
081302 - ..
081303 - 5. Orange 10' Fastcat 5 Belkin 350 MHz Premium LAN Cable
081304 - UTP Cat 5 Patch cable
081305 -
081306 - Connected from c20 to Netgear router for network access
081307 - to computers and Internet
081308 -
081309 - This can be replaced with catagory 6 cable, to increase
081310 - overall high speed DTR to gigabit standards.
081312 - ..
081313 - This review indicates that upgrading the router and cables is the
081314 - first step to providing LAN performance with high speed DTR at current
081315 - industry gigabit 10\100\1000 Mbps standards.
081316 -
081317 - [On 130714, ordered from Amazon high speed router and
081318 - cables to improve network speed. ref SDS 9 SI5G
081320 - ..
081321 - [On 130715 0103 at 0305 Amazon order 104-3948262-6593861
081322 - Arris model R6300 modem to replace Comcast modem, improve
081323 - performance of existing LAN and wireless support, and save
081324 - rental charges. ref SDS 10 526K
081325 -
081326 -
081327 -
081328 -
081329 -
081330 -
081331 -
081332 -
081333 -
081334 -
0814 -