Base Case
I am unable to use tracerte to trace the route to salesforce.com from
my T43p laptop running evS 1.2R connected to Verizon's network via a
Netgear Wireless-N 300 Router (WNR2000v2) and then a Westell DSL modem.
Tracerte does not supply me with any information after the 2nd hop
which is the Westell modem, after that it simply displays '*' at each
hop. Pinging salesforce.com from the same computer shows a time of 240
ms. Browsing this particular site in Firefox 3.5.9 or 3.6.3 is slow and
inconsistent, meaning that the pages do not always load and many
attempts have to be made to successfully load a page. I can reach other
websites fine. Nslookup fails with the following message:
*** Can't find server name for address 10.20.30.1: Non-existent
host/domain
*** Default servers are not available
A machine running Windows connected to the same Netgear router and
Westell DSL modem traces the route in 11 hops. Pinging salesforce.com
shows here a consistent time of 85 ms. No problems browsing. Nslookup
results in the same error message as above but also displays the IP
address of salesforce.com.
All of the above is also true, on both machines, when trying to reach
the IP address, 204.14.234.33, directly.
Case 2
I connected the T43p running eCS directly to the Netgear router using a
cable and rebooted. I am still not able to trace the route to
salesforce.com, nor is nslookup any more helpful than above, either
when looking up the domain or using the above IP address. However, and
importantly, the ping time is now down to 80 ms on this system as well.
The conclusion is that using this particular wireless adapter under eCS
(and on this particular computer) results in a signficant degradation
in latency.
Scenario 3
I now connected the T43p directly to the Westell DSL modem. The ping
time stays at 80 ms, nslookup now works correctly (for both the domain
and the IP address with no error messages) but tracerte still does not
show any valid information beyond the Westell DSL modem.
Can anyone suggest the reason for any or all of the above? A setting in
the Netgear router which is not entirely compatible with eCS? An effect
of using the Genmac driver where the communication is so slow that
something times out at a low level? Something not compatible in the DSL
modem or elsewhere on the Verizon network? Something else?
Many thanks.
--
This email was Anti Virus checked by Astaro Security Gateway. http://www.astaro.com
back to list