well S*** Larry, thanks for providing that vital piece of troubleshooting relevant information!
I still say you are using Mobile IP. fess up ;-> Chuck -- www.chuckslongroad.info like my web site? take the survey! ""Larry Letterman"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > thats why we put in wireless in all our buildings..moving around is no > problem... > > Priscilla Oppenheimer wrote: > > >Darrell Newcomb wrote: > > > >>Because pre-W2K windows didn't automatically try to renew a > >>lease when the > >>ethernet interface comes back up after being down. So...if the > >>old lease > >>hadn't come up for renewal during the time the machine moved > >>from point A to > >>B.....the users don't automatically get connectivity. > >> > > > >Plus with laptops, the user expects to not have to reboot. They may just > >move from building to building without shutting down the laptop. It might go > >to sleep, but you should just be able to hit a button and keep working. It > >seems like a reasonable user expectation, but alas, we as networkers haven't > >done a good job in this area. (at least with IP) > > > >The technical issue is that the user is in a different subnet and needs a > >new IP address and default gateway after moving to a new building, location, > >whatever. > > > >Priscilla > > > >>Lots of options to teach the helpdesk how to educate > >>users....but since it > >>'worked before' in Chuck's case it's seen as a (big?) > >>problem(PITA). > >> > >>""Larry Letterman"" wrote in message > >>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > >> > >>>why is that ? we have segmented avvid network across our > >>> > >>campus. The > >> > >>>laptops are all W2K and they work just > >>>fine without any issues on DHCP...The routers are all running > >>> > >>hsrp and > >> > >>>work correctly.. > >>> > >>>Chuck's Long Road wrote: > >>> > >>>>I see I should have made this one a "Friday Folly" :-> > >>>> > >>>>In a Big Flat Bridged Network, a mobile user unplugs the > >>>> > >>laptop at one > >> > >>>>office, drives over to the next office, plugs back in, and > >>>> > >>no further > >>action > >> > >>>>is required. The Windoze PC has retained it's IP address, > >>>> > >>and the network > >> > >>>>doesn't care about location, because it is one big flat > >>>> > >>network. > >> > >>>>However, in the brand new ATM based AVVID ready routed > >>>> > >>network, said > >>mobile > >> > >>>>user is now in a different segment in each location. With > >>>> > >>Windoze, you > >>have > >> > >>>>to manually intervene. Sometimes you have to release the IP > >>>> > >>address, > >>reload > >> > >>>>the computer, and then get your new DHCP assignment. Users > >>>> > >>don't like > >>this. > >> > >>>>After all, now they have to do something, whereas before > >>>> > >>they did not. > >>Never > >> > >>>>mind the higher speed, the failover capability of the > >>>> > >>routers, the new > >>100 > >> > >>>>mbs switches rather than 10mbs. They have to take an extra > >>>> > >>step or two in > >> > >>>>order to log in. > >>>> > >>>>This is normal behaviour for Windoze machines, and maybe for > >>>> > >>DHCP clients > >>in > >> > >>>>general. I have had to do this release / renew for years. > >>>> > >>>>But to the customer, who is pretty naive in terms of > >>>> > >>networking, there is > >>a > >> > >>>>"problem" that was caused by the new routers. To the users, > >>>> > >>there is a > >> > >>>>problem that never existed before. > >>>> > >>>>Like I said, serves me right. You give a customer a great > >>>> > >>new network, > >>and > >> > >>>>you break something so rudimentary that it never would have > >>>> > >>occurred > >> > >>>>otherwise. :-> > >>>> > >>>>-- > >>>> > >>>>www.chuckslongroad.info > >>>>like my web site? > >>>>take the survey! > >>>> > >>>> > >>>> > >>>>""Priscilla Oppenheimer"" wrote in message > >>>>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > >>>> > >>>>>Spare us the mystery and tell us what you're getting at. > >>>>> > >>:-) Did you > >> > >>>>forget > >>>> > >>>>>to tell the DHCP server to provide the correct default > >>>>> > >>gateway address > >>to > >> > >>>>>the PCs? That's my guess, since you say everything else > >>>>> > >>like helper > >> > >>>>>addresses, etc. is configured correctly. Just a late-night > >>>>> > >>theory, > >> > >>>>waiting > >>>> > >>>>>for Jay Leno to come on..... > >>>>> > >>>>>Thanks, > >>>>> > >>>>>Priscilla > >>>>> > >>>>>Chuck's Long Road wrote: > >>>>> > >>>>>>The AVVID solution I sold a few months ago is gong through > >>>>>>implementation. > >>>>>>This project has been problematic for a lot of reasons, so > >>>>>> > >>it > >> > >>>>>>is not unusual > >>>>>>for a round of e-mails from the customer complaining about > >>>>>> > >>one > >> > >>>>>>thing or > >>>>>>another. > >>>>>> > >>>>>>Today was a good one, however. Shows to go you have to ask > >>>>>>things you > >>>>>>normally wouldn't think about. > >>>>>> > >>>>>>DHCP - no big deal. Works fine. All of us have probably > >>>>>> > >>used it > >> > >>>>>>or > >>>>>>configured it. All of us probably have experience with > >>>>>> > >>running > >> > >>>>>>several small > >>>>>>sites off a single DHCP server at a central site. > >>>>>> > >>>>>>So why is the customer complaining about DHCP not working, > >>>>>> > >>and > >> > >>>>>>it's because > >>>>>>our routers are screwed up and Microsoft told them that > >>>>>> > >>they > >> > >>>>>>would have to > >>>>>>change their network addressing to a single class B rather > >>>>>> > >>than > >> > >>>>>>subnets of > >>>>>>/16 space, the way I designed it? > >>>>>> > >>>>>>The routers are configured correctly. The network is > >>>>>> > >>designed > >> > >>>>>>correctly - no > >>>>>>overlapping subnets. IP helpering is configured correctly. > >>>>>> > >>>>>>Problem occurs with several users, different NIC's, either > >>>>>>Win2K or WinXP. > >>>>>>No one common factor. Worked just fine before we put the > >>>>>> > >>new > >> > >>>>>>routers in. > >>>>>> > >>>>>>Recognizing that Microsoft is full of C**P and their TCP > >>>>>> > >>stack > >> > >>>>>>is S**T, > >>>>>>still, why the problem. > >>>>>> > >>>>>>Gee, what happens to DHCP when you go from a single flat > >>>>>>bridged network to > >>>>>>a segmented routed network? Especially to mobile users, who > >>>>>>travel from site > >>>>>>to site for various reasons on a regular basis? > >>>>>> > >>>>>>Serves me right > >>>>>> > >>>>>>Chuck > >>>>>> > >>>>>>-- > >>>>>> > >>>>>>www.chuckslongroad.info > >>>>>>like my web site? > >>>>>>take the survey! > >>>>>> > >>>-- > >>> > >>>Larry Letterman > >>>Network Engineer > >>>Cisco Systems Inc. > -- > > Larry Letterman > Network Engineer > Cisco Systems Inc. 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