Re: dhcp issue

Hi gilles,

not working in my case ,, I have done sh/noshut everywhere.

On Tue, Aug 7, 2012 at 1:01 PM, Gilles Fabre <fabre.gilles_at_voila.fr> wrote:

> tried shut/no shu on R2 & R3 interfaces ?
>
> labbed it. works well (see below)
>
>
>
>
> R2#
>
>
> ip dhcp pool R1_ip
> network 180.1.31.0 255.255.255.0
> !
> interface Serial0/0
> description conn to R3
> ip address 180.1.23.2 255.255.255.0
> encapsulation ppp
> !
> ip route 0.0.0.0 0.0.0.0 180.1.23.3
>
> --------------------------------------------------
>
> R3#
> ip dhcp-server 180.1.23.2
> !
> interface Serial0/0
> description conn to R2
> ip address 180.1.23.3 255.255.255.0
> encapsulation ppp
> !
> interface Serial0/1
> description conn to R1
>
> ip address 180.1.31.3 255.255.255.0
> ip accounting output-packets
> ip flow ingress
> ip flow egress
> encapsulation ppp
> peer default ip address dhcp
>
> --------------------------------------------------
>
> R1#
> interface Serial0/1
> description con to R3
>
> ip address negotiated
> encapsulation ppp
>
>
>
> --------------------------------------------------
> --------------------------------------------------
>
> R1(config-if)#do sh ip int s0/1
> Serial0/1 is up, line protocol is up
> Internet address is 180.1.31.4/32
> Broadcast address is 255.255.255.255
> Address determined by IPCP
> Peer address is 180.1.31.3
>
>
>
> R2(config)#do sh ip dhcp bin
>
> Bindings from all pools not associated with VRF:
> IP address Client-ID/ Lease expiration Type
> Hardware address/
> User name
> 180.1.31.4 0063.6973.636f.2d31. Mar 02 2002 01:36 AM
> Automatic
> 3830.2e31.2e33.312e.
> 332d.5365.7269.616c.
> 302f.31
>
>
>
>
>
>
> > Message du 07/08/12 ` 10h55
> > De : "swap m"
> > A : "shekhar sharma"
> > Copie ` : "Cisco certification"
> > Objet : Re: dhcp issue
> >
> > wht does "debug ppp negotiation" point to ? ID didnt match & TIMEout:
> > State ACKsent?
> >
> > On Tue, Aug 7, 2012 at 12:37 PM, shekhar sharma
> > wrote:
> > >
> > > same status :-
> > >
> > > R1#sh interfaces serial 0/1 | i add
> > > Internet address will be negotiated using IPCP
> > >
> > > On Tue, Aug 7, 2012 at 12:35 PM, shekhar sharma
> > > wrote:
> > >>
> > >> doesn't help ,,, same isse
> > >>
> > >>
> > >> R3#sh running-config | sec dhcp
> > >> ip address-pool dhcp-proxy-client
> > >> ip dhcp-server 180.1.23.2
> > >>
> > >> R2#sh ip dhcp binding
> > >> Bindings from all pools not associated with VRF:
> > >> IP address Client-ID/ Lease expiration Type
> > >> Hardware address/
> > >> User name
> > >> 180.1.31.1 0063.6973.636f.2d31. Jan 04 2010 12:06 PM
> > >> Automatic
> > >> 3830.2e31.2e33.312e.
> > >> 332d.5365.7269.616c.
> > >> 312f.32
> > >> R2#ping 180.1.31.3
> > >> Type escape sequence to abort.
> > >> Sending 5, 100-byte ICMP Echos to 180.1.31.3, timeout is 2 seconds:
> > >> !!!!!
> > >> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
> > >> R2#sh ip ro
> > >> R2#sh ip route 180.1.31.1
> > >> Routing entry for 180.1.31.0/24
> > >> Known via "eigrp 100", distance 90, metric 2681856, type internal
> > >> Redistributing via eigrp 100, rip, ospf 1
> > >> Advertised by rip metric 3
> > >> ospf 1 subnets
> > >> Last update from 180.1.23.3 on Serial0/1, 00:01:58 ago
> > >> Routing Descriptor Blocks:
> > >> * 180.1.23.3, from 180.1.23.3, 00:01:58 ago, via Serial0/1
> > >> Route metric is 2681856, traffic share count is 1
> > >> Total delay is 40000 microseconds, minimum bandwidth is 1544 Kbit
> > >> Reliability 255/255, minimum MTU 1500 bytes
> > >> Loading 1/255, Hops 1
> > >>
> > >>
> > >> R1#sh interfaces serial 0/1 | i add
> > >>
> > >> Internet address will be negotiated using IPCP
> > >>
> > >> On Tue, Aug 7, 2012 at 12:11 PM, ccie19804_at_gmail.com
> > >> wrote:
> > >>>
> > >>> Two things -
> > >>> 1. change the DHCP server IP to physical IP
> > >>> 2. make sure DHCP Server has route to reach pool ip (180.1.31.0/24in
> > >>> this case)
> > >>>
> > >>> HTH
> > >>>
> > >>> Swap
> > >>> #19804
> > >>>
> > >>> Sent from my iPhone
> > >>> Plaese ingore seplling mistkaes
> > >>> ___________________________
> > >>>
> > >>> On Aug 7, 2012, at 10:42, shekhar sharma
> > >>> wrote:
> > >>>
> > >>> > Hi,
> > >>> >
> > >>> > Anyone.....??
> > >>> > I know I am missing something obvious......But not able to fiure it
> > >>> > out.
> > >>> >
> > >>> >
> > >>> > Regards,
> > >>> > Shekhar
> > >>> >
> > >>> > On Sun, Aug 5, 2012 at 11:21 AM, shekhar sharma
> > >>> > wrote:
> > >>> >
> > >>> >> Hi All,
> > >>> >>
> > >>> >> got stuck in a small issue of DHCP.please help
> > >>> >>
> > >>> >> *Scenario* :-
> > >>> >>
> > >>> >> R1 & R3 are connected back2back via serial link running PPP.
> > >>> >> R1 is requesting ip via IPCP, R3 is a dhcp-proxy pointing to Dhcp
> > >>> >> server
> > >>> >> pointing to R2.
> > >>> >>
> > >>> >> R3 & R2 are also connected back2back via serial link .
> > >>> >>
> > >>> >> *Issue* :-
> > >>> >>
> > >>> >> R3 is forwarding dhcp request from R1 to R2. That is as expected.
> > >>> >> R2 is receving the requet & allocating 1 Ip address (I can see in
> > >>> >> "show ip
> > >>> >> dhcp binding").That is as expected.
> > >>> >> But on R1 status is still "Internet address will be negotiated
> using
> > >>> >> IPCP"
> > >>> >> ....??
> > >>> >> Also on R1 not able to see any dhcp debug logs.
> > >>> >>
> > >>> >> *Configs*:-
> > >>> >>
> > >>> >> R2#sh running-config | sec dhcp
> > >>> >> no ip dhcp use vrf connected
> > >>> >> ip dhcp pool R1_ip
> > >>> >> network 180.1.31.0 255.255.255.0
> > >>> >>
> > >>> >> R2#sh ip dhcp binding
> > >>> >> Bindings from all pools not associated with VRF:
> > >>> >> IP address Client-ID/ Lease expiration
> > >>> >> Type
> > >>> >> Hardware address/
> > >>> >> User name
> > >>> >> 180.1.31.1 0063.6973.636f.2d31. Jan 04 2010 12:12 PM
> > >>> >> Automatic
> > >>> >> 3830.2e31.2e33.312e.
> > >>> >> 332d.5365.7269.616c.
> > >>> >> 312f.32
> > >>> >>
> > >>> >> ===================================
> > >>> >> R3#sh running-config int se1/2
> > >>> >> Building configuration...
> > >>> >> Current configuration : 200 bytes
> > >>> >> !
> > >>> >> interface Serial1/2
> > >>> >> ip address 180.1.31.3 255.255.255.0
> > >>> >> ip accounting output-packets
> > >>> >> ip flow ingress
> > >>> >> ip flow egress
> > >>> >> encapsulation ppp
> > >>> >> peer default ip address dhcp
> > >>> >> serial restart-delay 0
> > >>> >> end
> > >>> >>
> > >>> >> R3#sh running-config | sec dhcp
> > >>> >> ip address-pool dhcp-proxy-client
> > >>> >> ip dhcp-server 150.1.2.2
> > >>> >>
> > >>> >> ===================
> > >>> >> R1#sh run int se0/1
> > >>> >> Building configuration...
> > >>> >> Current configuration : 69 bytes
> > >>> >> !
> > >>> >> interface Serial0/1
> > >>> >> ip address negotiated
> > >>> >> encapsulation ppp
> > >>> >> end
> > >>> >>
> > >>> >> R1#sh int serial 0/1 | i add
> > >>> >> Internet address will be negotiated using IPCP
> > >>> >>
> > >>> >> Regards,
> > >>> >> Shekhar
> > >>> >
> > >>> >
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> > >>> >
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Received on Tue Aug 07 2012 - 13:09:43 ART