Can you show us your Lab setup including IP addresses and your DHCP scope
config
Parrish.
"Cai, Land" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> On DHCP server, I configured the default gateway for this IP scope. I can
> see this active leased IP on DHCP manager. Because it is the remote
> computer, I login the router on Lan1, but can't ping this address. Is the
> DHCP manager reflects the wrong information about this active leased IP?
Is
> enabling ip helper -address on router interface e0 of LAN1 useless? How to
> resolve this problem?
>
> Thanks in advance.
> Cai, Land
>
> -----Original Message-----
> From: Kevin S. Mahler [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, June 08, 2000 9:01 PM
> To: Cai, Land; 'Cisco (E-mail)'
> Subject: RE: ask for help on DHCP
>
> On the PC on Lan1 can you check to see that it got it's IP address and
> default gateway?
> Windows95/98 command: winipcfg
> WindowsNT command: ipconfig /all
>
> What did you set as the default gateway for this scope of IP addresses?
> If the IP address is assigned with the wrong default gateway you will see
> exactly the type of behavior you have described. I suspect this is what
> is happening.
>
> The default gateway for the scope on Lan1 needs to be the router interface
> on Lan1.
>
> If Lan1 is remote and you cannot check the computer, log into the router
on
> Lan1 and see if it can ping the address. If it can then it's about a 99%
> chance
> the default gateway of the machine is set incorrectly.
>
> An incorrect default gateway address accounts for about 75% of the ES
> connectivity problems I run into.
>
> Kevin
>
>
>
> At 05:44 AM 6/8/00 -0500, Cai, Land wrote:
>
> >Yes, I only enable ip helper-address command on the Ethernet port on
> >router1. But there is a quite strange problem. From DHCP manager( this is
> on
> >NT4.0 ) I can see this active IP registration leased by one of the remote
> >client on LAN1, But on LAN3, I can't ping this active IP. I can ping IP
> >address of Ethernet port of router1. As well, I defined many options for
> >this IP scope on DHCP manager, such as domain name, DNS server, WIN
server,
> >note type.
> >Do you have any idea about this?
> >
> >Landcai
> > -----Original Message-----
> >From: Gary Frye [mailto:]
> >Sent: Monday, June 05, 2000 9:43 AM
> >To: Cai, Land; 'Cisco (E-mail)'
> >Subject: Re: ask for help on DHCP
> >
> >Yep, all you need is to configure the Helper address (ip helper-address
> >[address]) command on Router1, and as long as Router1 has route to LAN3
> >(whether by static or routing protocol... and Router3 has route back to
> >LAN1).
> >See, Router1 will take the DHCP broadcasts and convert them into unicast
> >packets and send them directed to LAN3. For the "address" argument in
the
> >command you can use the specific IP of the DHCP server or use the
broadcast
> >address for that network (192.168.100.255).
> >garyf
> >----- Original Message -----
> >From: "Cai, Land" <[EMAIL PROTECTED]>
> >To: "'Cisco (E-mail)'" <[EMAIL PROTECTED]>
> >Sent: Sunday, June 04, 2000 8:52 PM
> >Subject: ask for help on DHCP
> >
> >
> > > Dear gang,
> > >
> > > I have the following situation.
> > >
> > > Ethernet LAN1----Router1-----------Router2----(TokenRing>
> >LAN1)-----Router3---------Ethernet LAN3
> > > |
> > > |
> > > |
> > > |
> > > |
> > > |
> > >
> > >
> > >
> > >
> > > Let 's say Ethernet LAN1 has the ip segment 192.168.1.*/24,
> > > Ethernet LAN3 has the IP segment 192.168.100.*/24,
> > > I want the clients on Ethernet LAN1 can get ip address from
> > > DHCP server located in Ethernet LAN3 automatically. Can I get it to
> > > reality? I do only need to configure the IP helper address for
Ethernet
> > > interface on the router1, don't I? Or I need to configure something on
> > > router1, 2, 3?
> > >
> > > Thanks in advance,
> > > Cai, land
> > >
> > >
> > >
> > >
> > >
> > >
> > > ___________________________________
> > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> > > FAQ, list archives, and subscription info: http://www.groupstudy.com
> > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> >
> >___________________________________
> >UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> >FAQ, list archives, and subscription info: http://www.groupstudy.com
> >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
> --------------------------------------------------------------------------
--
> -------------------------------------------------
> Kevin S. Mahler, CCNP, CCDA, CCSE
> Systems Engineer, Cisco Systems
> Atlanta, GA
>
> Author of CCNA Training Guide, New Riders, ISBN 0735700516
> Tech Editor of CCDA Exam Certification Guide, Cisco Press, ISBN 0735700745
> Revision Author of Internetworking Technologies Handbook Third Edition,
> Cisco Press
>
> See my homepage at <http://www.kmahler.com>
> --------------------------------------------------------------------------
--
> -----------------------------------------------
> -
>
> ___________________________________
> UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> FAQ, list archives, and subscription info: http://www.groupstudy.com
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> ---
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
