Ascend Archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: (ASCEND) Q: arp problem with p50
I spoke to the customer and it is not the single-user version. I tried the
Ascend-PPP-Address attribute and got the same response. If he connects to
the first max 207.xxx.x.3 then he is ok, but a redial and connection to
the second max 207.xxx.x.5, then he can't go or ping anywhere at all. I
have OSPF running on all my boxes with RIP turned off. Not sure what else
to do. Ascend tech support pointed me to the Ascend-PPP-Address but no
go.
East County Internet Services, Inc
-Jess-
CFO
System Admin
On Mon, 6 Oct 1997, Julian Cowley wrote:
> On Fri, 3 Oct 1997, Daniel Wesemann wrote:
> > i have a little problem with a p50 (S/N 5485356) with firmware 5.0A (Feb
> > 97). took it out of the box, configured the ether interface to
> > 150.10.61.31/24, entered the termserv and tried a ping to the router.
> > guess what: nothing!
>
> What is the exact model of your P50? If it ends in HX, you have the
> "single-user" (i.e., crippled) version.
>
> The way that works is that the P50-HX takes note of the very first MAC
> address it sees on the ethernet wire. Once set, it will only forward
> packets from that MAC address to the upper protocol layers. This
> effectively makes it useless on a LAN with many hosts -- you have to
> connect it directly to your computer using a null 10Base-T cable.
>
> Of course, this is only the way Ascend intended it to be used, but it's
> possible to get around its limitations. A Linux system with two ethernet
> cards can do wonders...
>
> > hours later, meanwhile with a sniffer connected to the lan, i tried
> > again:
> >
> > ping 150.10.61.1 (the router)
> >
> > on the sniffer, i can see that the pipeline sends arp requests like
> > crazy, and the router replies. but ping doesn't work. and "show arp"
> > shows me an empty cache. "aah, filters", i think. and check the setting
> > in mod-config->ether options. it is 0, which according to the manual
> > means "disabled".
> >
> > doubting, i try the ping of last resort:
> >
> > ping 255.255.255.255
> >
> > and see, ONE machine on the 150.10.61.x lan responds. it is 150.10.61.3.
> > no idea why this one and not the others. on the sniffer, i can see all
> > the workstations on my 150.10.61.x lan sending arp requests for my
> > pipeline. the pipeline doesn't respond. "show arp" gives me just one
> > entry: the one for 150.10.61.3.
> >
> > after the entry got washed out of the arp cache, i tried the broadcast
> > ping again. this time, the one responding was 150.10.61.21, again with
> > only this entry in "show arp".
> >
> > 150.10.61.21 is one of our management stations and has a tftp server. so
> > i kept pinging to keep the arp cache alive and grabbed a new firmware
> > from the ascend server: b.p50 (5.1A). installed it, booted it, even
> > cleared the profile and started from scratch - but the problem persists.
> >
> > i got two cards left to play now...:
> >
> > 1) the hope that someone on the list knows what i'm doing wrong and
> > tells me
> > 2) that plugging in the ISDN connection will somehow "fix" my pipeline.
> > i don't have the phone connection yet to try it.
> >
> >
> > thanks for any hint
> >
> > daniel
> >
> >
> > -------------------------------------------------------------------------
> > - Daniel Wesemann wesi@siemens.ch http://www.siemens.ch
> > -
> > - UNIX and Network Administration Siemens Switzerland Inc, Zurich
> > -
> > -------------------------------------------------------------------------
> > ++ Ascend Users Mailing List ++
> > To unsubscribe: send unsubscribe to ascend-users-request@bungi.com
> > To get FAQ'd: <http://www.nealis.net/ascend/faq>
> >
>
>
> ++ Ascend Users Mailing List ++
> To unsubscribe: send unsubscribe to ascend-users-request@bungi.com
> To get FAQ'd: <http://www.nealis.net/ascend/faq>
>
++ Ascend Users Mailing List ++
To unsubscribe: send unsubscribe to ascend-users-request@bungi.com
To get FAQ'd: <http://www.nealis.net/ascend/faq>
Follow-Ups:
References: