Re: DHCP Query

Hi Andy,

Thanks for the revert.static assignments has no problem, end-to-end ip's
are reachable. no dhcp snooping or Arp inspection has been configured on
the device. it might be a bug but i just want to consider all the remaining
possibilities before eliminating it

----
Rakesh M
Jncie-sp 02079
On Tue, Jul 15, 2014 at 1:59 AM, Andy LaPorte <andy_at_cloud9.net> wrote:
> Dhcp snooping or arp inspection? If not what are the port stats on the
> 7609 facing the server?  The goal here is to understand why the 7609 is
> dropping the packet.
>
> Also it could be an ios bug.  If you statically assign an IP address are
> you able to ping the DHCP server?
>
> Andy
>
> Sent from my iPad
>
> > On Jul 14, 2014, at 3:49 PM, Rakesh M <raaki.88_at_gmail.com> wrote:
> >
> > few corrections to the above email, sorry about some typos completely
> > occupied with other thoughts.
> >
> > end-node sends a dhcp-discover packet to the 7609 router
> >
> > 7609 forwards the discover packet to the dhcp-server
> >
> > dhcp-server releases the offer packet for end-nodes request
> >
> > offer packet reaches the 7609 routers and it gets dropped there
> >
> > there are no service-policies applied to this interface , not any of copp
> > policies are affecting this, any knob or something which has to be
> > configured, i was reading in some online forums that port may have to be
> > configured with port-fast command, i am not sure how far that will help
> > will surely try it tomorrow
> >
> > service dhcp has been disabled on 7609 , but that has nothing to do with
> > this setup technically.
> >
> > any ideas are welcome, there are not many outputs that i have here except
> > for some replication results but again replication in gns3 works fine so
> i
> > do not think that will help.
> >
> > Thanks
> >
> > ----
> >
> > Rakesh M
> > Jncie-sp 02079
> >
> >
> >> On Tue, Jul 15, 2014 at 1:07 AM, Rakesh M <raaki.88_at_gmail.com> wrote:
> >>
> >> Hello Experts,
> >>
> >> I am coming across a very strange problem with one of our customers
> >>
> >>
> >> DHCP-SERVER -------service-instance-ethernet ---------7609 Series
> >> -------service-instance ethernet------------ End-node
> >>
> >> both of them are in same bridge-domain as well and have same vlan
> >> encapsulations id's
> >>
> >> end-node sends a dhcp-offer packet to 7609 , no relay here is required
> so
> >> it forwards the packet to the dhcp-server,
> >>
> >> dhcp-server allocates the offer packet and sends it to 7609 and this
> time
> >> , 7609 does not forward the traffic.
> >>
> >> there is absolutely nothing blocking anything verified everything still
> >> issues seems unresolved, any experiences from your past  ?
> >>
> >> Thanks
> >>
> >> ----
> >>
> >> Rakesh M
> >> Jncie-sp 02079
> >
> >
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