[nsp] NRP1 (6400) 12.2(4)B6, RBE and DHCP relay problem with option 82 support

[Rolands Truls]

HI Kimo!
We run into this problem too but only with nrp2:)  There is a bug: If dhcp
relay has created host route to subif, and new dhcp discover comes from
there,  it never send to this subif dhcp confack. Interim release exists
which fixes this issue. Ask your cisco representative ;)))

br
Rolands

> -----Original Message-----
> From: Kimmo Liikonen [mailto:kimmo-cisco-nsp@sneezy.phnet.fi]
> Sent: Friday, November 01, 2002 5:08 PM
> To: cisco-nsp@puck.nether.net
> Subject: [nsp] NRP1 (6400) 12.2(4)B6, RBE and DHCP relay 
> problem with option 82 support
> 
> 
> Hello,
> 
> We are terminating our DSL customers currently with 6400/NRP1. IOS is
> 12.2(4)B6 and we use DHCP relay to forward DHCP queries to 
> ISC DHCP-server.
> Customers are aggregated with RBE and we limit customers to 
> get only 3 IP
> addresses with DHCP option 82. The problem is that 
> _SOMETIMES_ DHCPACKs are
> lost. We have traced that DHCPACKs are sent to NRP, but they 
> are not sent
> from NRP to customer. Another computer with different IP 
> address/lease works
> fine under same DSL circuit. Workaround was to move customer 
> to another NRP
> or reload NRP, but this really isn't an option with more than 
> 1000 customers
> terminated. I believe this is a IOS bug. We had 12.2(4)B3 
> before and it had
> nasty bug with generating option 82 to DHCP packets, 
> sometimes it generated
> duplicate DHCP option 82 (like 00:00:00:00:00:00:00:00:00 etc).
> 
> Does anyone else has run into same problem? and are there any other
> workarounds?
> 
> -- 
>  ______________________________________________________________
> | Kimmo Liikonen               email: kimmo.liikonen@phnet.fi  |
> | PHNet Internet Services      tel  : +358 3 873 4501          |
> | Ilmarisentie 20              fax  : +358 3 821 4555          |
> | FIN-15200 Lahti              web  : http://phnet.fi          |
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