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carbon unit2

SBC yahoo 6.0/608k

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Tracing route to www.testmy.net [67.18.179.85]

over a maximum of 30 hops:

  1    2 ms    1 ms    1 ms  home [192.168.1.254]

  2    19 ms    19 ms    19 ms  adsl-69-226-47-254.dsl.irvnca.pacbell.net [69.22

6.47.254]

  3    20 ms    19 ms    21 ms  dist4-vlan60.irvnca.sbcglobal.net [67.114.50.66]

  4    20 ms    19 ms    19 ms  bb2-g2-0.irvnca.sbcglobal.net [151.164.41.239]

  5    24 ms    21 ms    19 ms  core2-p5-0.crrvca.sbcglobal.net [151.164.41.14]

  6    19 ms    21 ms    21 ms  bb1-p8-0.crrvca.sbcglobal.net [151.164.41.2]

  7    24 ms    23 ms    21 ms  ex2-p8-0.eqlaca.sbcglobal.net [151.164.41.33]

  8    24 ms    23 ms    23 ms  bpr2-ge-2-1-0.LosAngelesEquinix.savvis.net [151.

164.248.214]

  9    23 ms    25 ms    24 ms  dhr1-pos-7-0.Elsegundola1.savvis.net [208.174.19

6.70]

10    24 ms    23 ms    23 ms  dhr2-ge-6-0.Elsegundola1.savvis.net [208.172.35.

42]

11    23 ms    23 ms    23 ms  dcr2-so-4-0-0.LosAngeles.savvis.net [208.172.35.

65]

12    23 ms    23 ms    23 ms  dcr1-as0-0.LosAngeles.savvis.net [204.70.192.117

]

13    57 ms    57 ms    56 ms  bcs2-so-3-3-0.dallas.savvis.net [204.70.192.246]

14    54 ms    56 ms    55 ms  bcs1-so-6-0-0.Dallas.savvis.net [204.70.192.49]

15    54 ms    55 ms    55 ms  dcr1-as0.Dallas.savvis.net [204.70.193.214]

16    56 ms    54 ms    54 ms  aer1-po10.DallasEquinix.savvis.net [204.70.134.1

4]

17    55 ms    57 ms    60 ms  208.175.175.42

18    53 ms    56 ms    55 ms  vl32.dsr02.dllstx3.theplanet.com [70.85.127.62]

19    56 ms    54 ms    55 ms  vl42.dsr02.dllstx4.theplanet.com [70.85.127.91]

20    55 ms    55 ms    55 ms  gi1-0-1.car17.dllstx4.theplanet.com [67.18.116.6

9]

21    56 ms    54 ms    55 ms  85.67-18-179.reverse.theplanet.com [67.18.179.85

]

Trace complete.

*Here is my ping to testmy.net:

Pinging www.testmy.net [67.18.179.85] with 32 bytes of data:

Reply from 67.18.179.85: bytes=32 time=56ms TTL=46

Reply from 67.18.179.85: bytes=32 time=55ms TTL=46

Reply from 67.18.179.85: bytes=32 time=58ms TTL=46

Reply from 67.18.179.85: bytes=32 time=57ms TTL=46

Reply from 67.18.179.85: bytes=32 time=54ms TTL=46

Reply from 67.18.179.85: bytes=32 time=54ms TTL=46

Reply from 67.18.179.85: bytes=32 time=55ms TTL=46

Reply from 67.18.179.85: bytes=32 time=56ms TTL=46

Reply from 67.18.179.85: bytes=32 time=55ms TTL=46

Reply from 67.18.179.85: bytes=32 time=55ms TTL=46

Ping statistics for 67.18.179.85:

    Packets: Sent = 10, Received = 10, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 54ms, Maximum = 58ms, Average = 55ms

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:book1:

It's impossible to get 6MB thoroughput on a 6MB DSL sync. There is a huge overhead encapsulating an ethernet frame with PPPoE and splitting down to ride over ATM cells. Figure about 18% so a 6MB DSL will do 5MB and a 3MB DSL will do 2.5MB. Cablemodems are much more effecient on their transports so if a DSL network and a cablemodem network were both properly sized for the load the cablemodem circuit would kill the DSL circuit by a 20% margin for the same sync rate.

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