From: Adam Crisp (adam.crisp@totalise.co.uk)
Date: Sun Nov 03 2002 - 11:07:28 GMT-3
HI Jeff,
I've just scanned down the post and the debug messages do seem strange,
Can you confirm that:
1. the Winnt server has a scope defined corectly for vlan 5
2. that the switch has "ip classless" and "ip subnet-zero" switched on
3. If that still does not work try setting the helper address on vlan 5 to
the broadcast address on vlan 2, ie 10.2.2.255
good luck
Adam
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
jeff szeto
Sent: 03 November 2002 13:39
To: ccielab@groupstudy.com
Cc: Prashanth; Larry Letterman; michael liu; Phil Virnoche
Subject: Re: dhcp error
Hi Group,
The following is the related config. The dhcp server is a WinNT, located in
Vlan 2
Vlan 4 dhcp clients can get ip while vlan 5 clients can't. They use the same
dhcp server.
The switch can ping the dhcp server. Also, if I assign an address manually
to
a host in vlan 5, the connection is ok.
interface Vlan2
ip address 10.2.2.252 255.255.255.0
no ip redirects
no ip mroute-cache
standby 2 preempt
standby 2 ip 10.2.2.254
interface Vlan4
ip address 10.2.4.252 255.255.255.0
ip helper-address 10.2.2.3
ip helper-address 10.2.2.170
no ip redirects
no ip mroute-cache
standby 4 preempt
standby 4 ip 10.2.4.254
interface Vlan5
ip address 10.2.5.252 255.255.255.0
ip helper-address 10.2.2.3
ip helper-address 10.2.2.170
no ip redirects
no ip mroute-cache
standby 5 priority 150 preempt
standby 5 ip 10.2.5.254
Thanks for your help!
Jeff
----- Original Message -----
From: michael liu
To: prashanthcm@yahoo.com ; jytszeto@hotmail.com ; ccielab@groupstudy.com
Sent: Sunday, November 03, 2002 5:58 PM
Subject: Re: dhcp error
Jan 1 08:57:27.463 HKG: DHCPD: BOOTREQUEST not
> forwarded. No route to helper
can you ping from the router?
>From: Prashanth
>Reply-To: Prashanth
>To: jeff szeto , ccielab@groupstudy.com
>Subject: Re: dhcp error
>Date: Sat, 2 Nov 2002 17:13:26 -0800 (PST)
>
>Jeff,
>
> > *Jan 1 08:57:27.463 HKG: DHCPD: setting giaddr to
>10.2.25.252.
>
>this is how the network is identified by the DHCP
>server and I am assuming you have pools defined for
>every VLAN. Every pool again should have the default
>router/gateway as the VLAN interface address.
>all VLAN interfaces will have helper addresses
>configured to point to the DHCP server.
>
>I have tried this test with a W2K server on VLAN 1
>with PCs on other VLANS with a NM-ESW-16 (etherswitch
>module) which has the Catalyst IOS code on the Router
>IOS...and it works!
>
>probably a #sh run would help and also what is ur DHCP
>server?
>
>thanks
>prashanth
>
>
>
>--- jeff szeto wrote:
> > Hi Group,
> >
> > I have a 6500 with different vlans. The dhcp client
> > can't get ip address. When
> > I do a debug in the switch, I see a error showing no
> > route to the dhcp server.
> > But this server is connected to the switch and I can
> > ping it from the switch.
> > The following is the log and the route table.
> > Could you help to resolve this problem?
> >
> > Thank you.
> >
> > Jeff
> >
> > Router#debug ip dhcp server packet
> >
> > *Jan 1 08:57:27.463 HKG: DHCPD: setting giaddr to
> > 10.2.25.252.
> > *Jan 1 08:57:27.463 HKG: DHCPD: BOOTREQUEST from
> > 0100.065b.37ae.b4 forwarded
> > to
> > 10.2.20.170.
> > *Jan 1 08:57:27.463 HKG: DHCPD: BOOTREQUEST not
> > forwarded. No route to helper
> > a
> > ddr 10.2.20.170
> > *Jan 1 08:57:27.463 HKG: DHCPD: BOOTREQUEST from
> > 0100.065b.37ae.b4 forwarded
> > to
> > 10.2.20.3.
> > *Jan 1 08:57:27.463 HKG: DHCPD: BOOTREQUEST not
> > forwarded. No route to helper
> > a
> > ddr 10.2.20.3
> > *Jan 1 08:57:27.567 HKG: DHCPD: forwarding
> > BOOTREPLY to client
> > 0006.5b37.aeb4.
> > *Jan 1 08:57:27.567 HKG: DHCPD: creating ARP entry
> > (10.2.25.15,
> > 0006.5b37.aeb4)
> > .
> > *Jan 1 08:57:27.567 HKG: DHCPD: unicasting
> > BOOTREPLY to client 0006.5b37.aeb4
> > (
> > 10.2.25.15).
> > *Jan 1 08:57:27.567 HKG: DHCPD: setting giaddr to
> > 10.2.25.252.
> > *Jan 1 08:57:27.567 HKG: DHCPD: BOOTREQUEST from
> > 0100.065b.37ae.b4 forwarded
> > to
> > 10.2.20.170.
> > *Jan 1 08:57:27.567 HKG: DHCPD: BOOTREQUEST not
> > forwarded. No route to helper
> > a
> > ddr 10.2.20.170
> > *Jan 1 08:57:27.571 HKG: DHCPD: BOOTREQUEST from
> > 0100.065b.37ae.b4 forwarded
> > to
> > 10.2.20.3.
> > *Jan 1 08:57:27.571 HKG: DHCPD: BOOTREQUEST not
> > forwarded. No route to helper
> > a
> > ddr 10.2.20.3
> > *Jan 1 08:57:27.675 HKG: DHCPD: forwarding
> > BOOTREPLY to client
> > 0006.5b37.aeb4.
> > *Jan 1 08:57:27.679 HKG: DHCPD: creating ARP entry
> > (10.2.25.15,
> > 0006.5b37.aeb4)
> > .
> > *Jan 1 08:57:27.679 HKG: DHCPD: unicasting
> > BOOTREPLY to client 0006.5b37.aeb4
> > (
> > 10.2.25.15).
> >
> > Router#sh ip ro
> > C 10.2.19.0/24 is directly connected, Vlan19
> > C 10.2.20.0/24 is directly connected, Vlan20
> > C 10.2.21.0/24 is directly connected, Vlan21
> > C 10.2.22.0/24 is directly connected, Vlan22
> > C 10.2.23.0/24 is directly connected, Vlan23
> > C 10.2.24.0/24 is directly connected, Vlan24
> > C 10.2.25.0/24 is directly connected, Vlan25
> > C 10.2.26.0/24 is directly connected, Vlan26
> > C 10.2.27.0/24 is directly connected, Vlan27
>
>
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This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:22:51 GMT-3