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

[Kimmo Liikonen]

Hi Rolands,

Thanks about your tip. We are trying to get that interim release. 

Btw. Do you have bugid for this bug?

> 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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