From: Deji Steve-Fagbemi (deji500@hotmail.com)
Date: Tue Nov 28 2006 - 07:06:55 ART
HI,
You need to use the default-router 1.2.3.4 command in the dhcp pool.
(1.2.3.4 is the serial IP address of the router connecting to R4).
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Leon
van Dongen
Sent: 28 November 2006 09:15
To: Michael Zuo
Cc: ccielab@groupstudy.com
Subject: Re: PPP DHCP not working for me, need HELP! (IEWB vol 1, lab 18,
task 3.1)
Hi Michael,
When I read your post I remembered a similar question from some time ago.
It comes down to the reachability of the gateway address <giaddr>.
http://www.groupstudy.com/archives/ccielab/200607/msg00449.html
HTH
--Leon
>
> van: "Michael Zuo" <mzuo@ixiacom.com>
> datum: 2006/11/28 Tue AM 09:52:47 MET
> aan: "Cisco certification" <ccielab@groupstudy.com>
> onderwerp: PPP DHCP not working for me, need HELP! (IEWB vol 1, lab 18,
> task 3.1)
>
> Hi group,
>
>
>
> I ran into a problem with using DHCP for PPP links. My R4 is supposed
> to get DHCP IP thru PPP peer R5, R1 is the DHCP server. I get (sorry
> about the lengthy paste, which is already abbreviated):
>
>
>
>
>
> R1#
>
> 1d06h: DHCPD: DHCPDISCOVER received from client
> 0063.6973.636f.2d31.3339.2e31.2e
>
> 34.352e.352d.5365.7269.616c.302f.31 through relay 139.1.45.5.
>
> 1d06h: DHCPD: Sending DHCPOFFER to client
> 0063.6973.636f.2d31.3339.2e31.2e34.352
>
> e.352d.5365.7269.616c.302f.31 (139.1.45.4).
>
> 1d06h: DHCPD: unicasting BOOTREPLY for client 00d0.5858.dc40 to relay
> 139.1.45.5
>
> .
>
>
>
> R4(config-if)#
>
> 1d06h: Se0/1 IPCP: TIMEout: State ACKsent
>
> 1d06h: Se0/1 IPCP: O CONFREQ [ACKsent] id 3 len 10
>
> 1d06h: Se0/1 IPCP: Address 0.0.0.0 (0x030600000000)
>
> 1d06h: Se0/1 IPCP: I CONFREQ [ACKsent] id 3 len 10
>
> 1d06h: Se0/1 IPCP: Address 139.1.45.5 (0x03068B012D05)
>
> 1d06h: Se0/1 IPCP: O CONFACK [ACKsent] id 3 len 10
>
> 1d06h: Se0/1 IPCP: Address 139.1.45.5 (0x03068B012D05)
>
> 1d06h: Se0/1 IPCP: I CONFREJ [ACKsent] id 1 len 10
>
> 1d06h: Se0/1 IPCP: Address 0.0.0.0 (0x030600000000)
>
> 1d06h: Se0/1 IPCP: ID 1 didn't match 3, discarding packet
>
> R4(config-if)#
>
> 1d06h: Se0/1 IPCP: TIMEout: State ACKsent
>
> 1d06h: Se0/1 IPCP: O CONFREQ [ACKsent] id 4 len 10
>
> 1d06h: Se0/1 IPCP: Address 0.0.0.0 (0x030600000000)
>
> 1d06h: Se0/1 IPCP: I CONFREQ [ACKsent] id 4 len 10
>
> 1d06h: Se0/1 IPCP: Address 139.1.45.5 (0x03068B012D05)
>
> 1d06h: Se0/1 IPCP: O CONFACK [ACKsent] id 4 len 10
>
> 1d06h: Se0/1 IPCP: Address 139.1.45.5 (0x03068B012D05)
>
> R4(config-if)#
>
>
>
>
>
> 1d06h: DHCP: zapping entry in DHC_PURGING state for Se0/1
>
> 1d06h: DHCP: new entry. add to queue
>
> 1d06h: DHCP: SDiscover attempt # 1 for entry:
>
> 1d06h: DHCP: SDiscover: sending 286 byte length DHCP packet
>
> 1d06h: DHCP: SDiscover 286 bytes
>
> R5(config-if)#
>
> 1d06h: Se0/1 IPCP: TIMEout: State REQsent
>
> 1d06h: Se0/1 IPCP: O CONFREQ [REQsent] id 10 len 10
>
> 1d06h: Se0/1 IPCP: Address 139.1.45.5 (0x03068B012D05)
>
> R5(config-if)#
>
> 1d06h: DHCP: SDiscover attempt # 2 for entry:
>
> 1d06h: DHCP: SDiscover: sending 286 byte length DHCP packet
>
> 1d06h: DHCP: SDiscover 286 bytes
>
> 1d06h: Se0/1 IPCP: TIMEout: State REQsent
>
> 1d06h: Se0/1 IPCP: State is REQsent
>
> 1d06h: Se0/1 IPCP: Cannot satisfy pool request
>
> 1d06h: Se0/1 IPCP: Neither side knows remote address
>
> 1d06h: Se0/1 IPCP: O CONFREJ [REQsent] id 9 len 10
>
> 1d06h: Se0/1 IPCP: Address 0.0.0.0 (0x030600000000)
>
> 1d06h: Se0/1 IPCP: I CONFACK [REQsent] id 8 len 10
>
> 1d06h: Se0/1 IPCP: Address 139.1.45.5 (0x03068B012D05)
>
> 1d06h: Se0/1 IPCP: ID 8 didn't match 10, discarding packet
>
> 1d06h: Se0/1 IPCP: I CONFACK [REQsent] id 9 len 10
>
> 1d06h: Se0/1 IPCP: Address 139.1.45.5 (0x03068B012D05)
>
> 1d06h: Se0/1 IPCP: ID 9 didn't match 10, discarding packet
>
> 1d06h: Se0/1 IPCP: I CONFREQ [REQsent] id 10 len 10
>
> 1d06h: Se0/1 IPCP: Address 0.0.0.0 (0x030600000000)
>
>
>
>
>
> It seems that the DHCP server is responding properly. My configurations
> are:
>
>
>
> R1:
>
>
>
> ip dhcp excluded-address 139.1.45.1 139.1.45.3
>
> ip dhcp excluded-address 139.1.45.5 139.1.45.255
>
> !
>
> ip dhcp pool P
>
> network 139.1.45.0 255.255.255.0
>
> !
>
>
>
> R4:
>
>
>
> R4(config-if)#do sh run int s0/1
>
> Building configuration...
>
>
>
> Current configuration : 89 bytes
>
> !
>
> interface Serial0/1
>
> ip address negotiated
>
> ip rip advertise 3
>
> encapsulation ppp
>
> end
>
>
>
> R4(config-if)#
>
>
>
>
>
>
>
> R5:
>
>
>
> R5(config-if)#do sh run int s0/1
>
> Building configuration...
>
>
>
> Current configuration : 151 bytes
>
> !
>
> interface Serial0/1
>
> ip address 139.1.45.5 255.255.255.0
>
> ip rip advertise 3
>
> encapsulation ppp
>
> peer default ip address dhcp
>
> clock rate 64000
>
> end
>
>
>
> R5(config-if)#do sh run | in dhcp
>
> ip dhcp-server 139.1.15.1
>
> peer default ip address dhcp
>
> R5(config-if)#do ping 139.1.15.1
>
>
>
> Type escape sequence to abort.
>
> Sending 5, 100-byte ICMP Echos to 139.1.15.1, timeout is 2 seconds:
>
> !!!!!
>
> Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms
>
> R5(config-if)#
>
>
>
>
>
> This is pretty much identical to the standard solution to the lab, but
> it is NOT working!! am I missing something simple?
>
>
>
>
>
> Please help!!
>
>
>
>
>
> thanks
>
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