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Article #104

Re: IPs and Tracerts

#104
From: Bruce Karnacki
Date: Wed, 16 May 2001 17:28
97 lines
4897 bytes
Problem solved...@home has finally applied DHCP to me.

Bruce Karnacki

Bruce Karnacki wrote:

> Good morning,
>
> I got a question about why winipcfg reports different IP than actual.
>
> I've got 3 machines registered with @home, b, e, and f.   All are set
> DHCP and share the connection through a hub.
>
> Machine b, the primary machine, has had the same IP for 18 months.  A
> winipcfg shows that the IP lease is renewed at least once a week, but
> the IP has never changed.  I do a tracert from work and get:  Notice
> that the tracert identifies this machine by name.  So far, so good;
> well, except for the ping time on the last hop.  Slow morning.
>
> C:\>tracert 24.14.149.178
>
> Tracing route to c360520-b.smateo1.sfba.home.com [24.14.149.178]
> over a maximum of 30 hops:
>
>   1   <10 ms   <10 ms   <10 ms  vrouter-142.parc.xerox.com
> [13.1.136.245]
>   2   <10 ms   <10 ms   <10 ms  janus.parc.xerox.com [13.3.160.200]
>   3   <10 ms   <10 ms   <10 ms  ck2-ext.parc.xerox.com [209.233.48.236]
>   4   <10 ms   <10 ms    10 ms  ded2-a10-0-0--3.snfc21.pbi.net
> [209.232.138.113]
>   5   <10 ms   <10 ms   <10 ms  edge1-ge1-0.snfc21.pbi.net
> [209.232.130.20]
>   6   <10 ms    10 ms   <10 ms  sl-gw25-stk-8-3.sprintlink.net
> [160.81.16.21]
>   7   <10 ms    10 ms   <10 ms  sl-bb21-stk-5-3.sprintlink.net
> [144.232.4.229]
>   8   <10 ms    10 ms    10 ms  sl-bb22-sj-9-0.sprintlink.net
> [144.232.9.169]
>   9   <10 ms    10 ms    10 ms  sl-gw8-sj-9-0.sprintlink.net
> [144.232.3.110]
>  10   <10 ms    10 ms    10 ms  sl-home-1-0-0.sprintlink.net
> [144.232.192.158]
>  11   <10 ms    10 ms    10 ms  bb1-pos8-0.rdc1.sfba.home.net
> [24.7.74.62]
>  12   <10 ms    10 ms    20 ms  r1-dpt-srp-1-0.smateo1.sfba.home.net
> [216.197.144.130]
>  13   <10 ms    10 ms    10 ms  ubr1.smateo1.sfba.home.net
> [24.5.207.202]
>  14   751 ms   601 ms   600 ms  c360520-b.smateo1.sfba.home.com
> [24.14.149.178]
>
> Trace complete.
>
> Machine f was assigned IP 24.19.214.45 about a year ago.  A winipcfg
> shows the IP is 65.0.145.249.  Also, @home member services shows this as
> the IP for f.  However, when I tracert or ping the IP 65.0.145.249, I
> time out, even though I know the machine is online, because I call home
> to be sure.  A ping or tracert to my long held 24.19.214.45 always
> connects, and a tracert gives the results below.  Question...why doesn't
> my machine name appear, and why does winipcfg and @home indicate a
> different IP?
>
> C:\>tracert 24.19.214.45
>
> Tracing route to 24.19.214.45 over a maximum of 30 hops
>
>   1   <10 ms   <10 ms   <10 ms  vrouter-142.parc.xerox.com
> [13.1.136.245]
>   2   <10 ms   <10 ms   <10 ms  janus.parc.xerox.com [13.3.160.200]
>   3   <10 ms   <10 ms   <10 ms  ck2-ext.parc.xerox.com [209.233.48.236]
>   4   <10 ms   <10 ms   <10 ms  ded2-a10-0-0--3.snfc21.pbi.net
> [209.232.138.113]
>   5   <10 ms   <10 ms   <10 ms  edge1-ge2-0.snfc21.pbi.net
> [209.232.130.71]
>   6   <10 ms    10 ms   <10 ms  sl-gw25-stk-8-3.sprintlink.net
> [160.81.16.21]
>   7   <10 ms    10 ms   <10 ms  sl-bb20-stk-5-3.sprintlink.net
> [144.232.4.221]
>   8   <10 ms    10 ms    10 ms  sl-bb21-sj-6-0.sprintlink.net
> [144.232.8.190]
>   9   <10 ms    10 ms    10 ms  sl-gw8-sj-10-0.sprintlink.net
> [144.232.3.114]
>  10   <10 ms    10 ms    10 ms  sl-home-1-0-0.sprintlink.net
> [144.232.192.158]
>  11   <10 ms    10 ms    10 ms  bb1-pos8-0.rdc1.sfba.home.net
> [24.7.74.62]
>  12   <10 ms    11 ms    10 ms  r1-dpt-srp-1-0.smateo1.sfba.home.net
> [216.197.144.130]
>  13    10 ms    10 ms    10 ms  ubr1.smateo1.sfba.home.net
> [24.5.207.202]
>  14   471 ms   521 ms   611 ms  24.19.214.45
>
> Trace complete.
>
> Any help understanding this is much appreciated.
>
> Bruce Karnacki
Technical Details
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From: Bruce Karnacki <karnacki@parc.xerox.com>
Newsgroups: comp.dcom.modems.cable,ba.internet
Subject: Re: IPs and Tracerts
Date: Wed, 16 May 2001 10:28:08 -0700
Organization: Xerox PARC
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