Thanks,

I have tried this and Client received desired IP address.I have also added extra router which is on the same subnet and it is dhcp client as well.

R3 DHCP client ---- Switch ------ R4 DHCP Server
R5 DHCP Client -----

I have copied R3 client-id so that R3 receives the same IP address.

R3/R5 DHCP Client
!
username R4 password 0 cisco
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
 pppoe enable group global
 pppoe-client dial-pool-number 1
!
!
interface Dialer1
 ip address dhcp
 ip mtu 1492
 encapsulation ppp
 dialer pool 1
!
---------------------------
R4 DHCP server

!
username R3 password 0 cisco
username R5 password 0 cisco
!
bba-group pppoe global
 virtual-template 1
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
 pppoe enable group global
end
!
interface Virtual-Template1
 ip address 34.34.34.44 255.255.255.0
 ip mtu 1492
 peer default ip address dhcp
 ppp authentication chap
end

ip dhcp excluded-address 34.34.34.1 34.34.34.29
ip dhcp excluded-address 34.34.34.51 34.34.34.254
!
ip dhcp pool POOL
   network 34.34.34.0 255.255.255.0
!
ip dhcp pool CLIENT
   host 34.34.34.47 255.255.255.0
client-identifier 0063.6973.636f.2d63.3230.302e.3032.6434.2e30.3030.302d.4469.31
!

Both DHCP CLient Routers receives IP address (R3 static) but the problem lies when I try to ping R4. (output from debug ip packet on R4 when Ping is run from R3).

*Mar 1 04:00:22.003: IP: s=34.34.34.47 (Virtual-Access1.1), d=34.34.34.44, len 100, rcvd 2 *Mar 1 04:00:22.003: IP: tableid=0, s=34.34.34.44 (local), d=34.34.34.47 (Virtual-Access1.2), routed via FIB *Mar 1 04:00:22.007: IP: s=34.34.34.44 (local), d=34.34.34.47 (Virtual-Access1.2), len 100, sending *Mar 1 04:00:22.051: IP: tableid=0, s=34.34.34.44 (Virtual-Access1.2), d=34.34.34.47 (Virtual-Access1.2), routed via FIB *Mar 1 04:00:22.051: IP: s=34.34.34.44 (Virtual-Access1.2), d=34.34.34.47 (Virtual-Access1.2), len 100, rcvd local pkt

It looks packets are replied correctly but I cannot see anything coming back on R3.


Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 34.34.34.44, timeout is 2 seconds:

*Mar 1 04:01:32.051: IP: tableid=0, s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), routed via FIB *Mar 1 04:01:32.051: IP: s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), len 100, sending. *Mar 1 04:01:34.047: IP: tableid=0, s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), routed via FIB *Mar 1 04:01:34.047: IP: s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), len 100, sending. *Mar 1 04:01:36.047: IP: tableid=0, s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), routed via FIB *Mar 1 04:01:36.047: IP: s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), len 100, sending. *Mar 1 04:01:38.047: IP: tableid=0, s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), routed via FIB *Mar 1 04:01:38.047: IP: s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), len 100, sending. *Mar 1 04:01:40.047: IP: tableid=0, s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), routed via FIB *Mar 1 04:01:40.047: IP: s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), len 100, sending.
Success rate is 0 percent (0/5)


R3(config-if)#do show ip route

Gateway of last resort is not set

     34.0.0.0/24 is subnetted, 1 subnets
C       34.34.34.0 is directly connected, Dialer1


The same case is when I run ping from R5 to R4.


Interesting enough is that when I shut/no shut Dialer 1 on R3 and I receive again the same IP then ping works.


R3(config-if)#do ping 34.34.34.44

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 34.34.34.44, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/40/88 ms
R3(config-if)#
*Mar 1 04:05:37.498: IP: tableid=0, s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), routed via FIB *Mar 1 04:05:37.502: IP: s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), len 100, sending *Mar 1 04:05:37.582: IP: tableid=0, s=34.34.34.44 (Dialer1), d=34.34.34.47 (Dialer1), routed via RIB *Mar 1 04:05:37.582: IP: s=34.34.34.44 (Dialer1), d=34.34.34.47 (Dialer1), len 100, rcvd 3 *Mar 1 04:05:37.586: IP: tableid=0, s=34.34.34.47 (local), d=34.34.34.44 (Dialer1), routed via FIB

R3(config-if)#


Any ideas why I see this? I use GNS3. Is that possibly the issue with ethernet switch in the middle?


Regards,
Lukasz


On 2013-01-07 23:56, imad Abdallah wrote:
you have to create a separate pool for the host

Date: Mon, 7 Jan 2013 23:26:51 +0000
From: [email protected]
To: [email protected]
Subject: [OSL | CCIE_RS] DHCP pool with Binding

Hi All,


I want to set up PPPoE client/server with server providing the
client
IP address via DHCP. I have created a dhcp pool on the server but I
would like also to force the client to receive the same IP address.
I know that I need to use client-identifier (debug ip dhcp packets)
with host option to provide the same address. When I try to use both

dhcp pool with subnet and host I receive error ¨% This command may
not
be used with host, origin, network or vrf pools.¨

Is there any way of doing this?


Regards
Lukasz
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