From: Chuck Church (cchurch@MAGNACOM.com)
Date: Sun Nov 03 2002 - 11:56:10 GMT-3
Jeff,
You've got HSRP configured with what looks like alternating
priorities. Do you have ip helper on the other routing device?
Technically, it should work on just one, and with both you'll get 2
forwarded bootp requests, but you'd need that if you lost the primary MSFC
with the helper statements. That's the only difference I see between VLAN 4
and 5.
Chuck Church
CCIE #8776, MCNE, MCSE
Sr. Network Engineer
Magnacom Technologies
140 N. Rt. 303
Valley Cottage, NY 10989
845-267-4000
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>
[mailto:nobody@groupstudy.com]On Behalf Of
jeff szeto
Sent: 03 November 2002 13:39
To: ccielab@groupstudy.com <mailto: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 <mailto:prashanthcm@yahoo.com> ;
jytszeto@hotmail.com <mailto:jytszeto@hotmail.com> ; ccielab@groupstudy.com
<mailto: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 <mailto: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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