I mocked this up on real hardware as well and was able to ping from either client to the server, but wasn't able to ping between clients even though I had ospf routes. However, if I used the exact same topology and IPCP instead of DHCP I was able to ping the spokes through the hub. I'm assuming that this is maybe some behavior in PPPoE, but haven't been able to find anything stating that you'd have this type of issue using dhcp with pppoe. I've not set it up in a production environment in years and can't remember how I did it then, but I do know that the doccd examples that I am recalling use IPCP. Does any have any insight for me?
Thanks, Rob ________________________________ From: imad Abdallah <[email protected]> To: Lukasz <[email protected]> Cc: CCIE OSL <[email protected]> Sent: Tuesday, January 8, 2013 6:26 PM Subject: Re: [OSL | CCIE_RS] DHCP pool with Binding GNS has all sorts of problems when it comes to switching.I tried it on real hardware and it worked with no issues.So I guess, the problem is with GNS > Date: Tue, 8 Jan 2013 14:23:29 +0000 > From: [email protected] > To: [email protected] > CC: [email protected] > Subject: RE: [OSL | CCIE_RS] DHCP pool with Binding > > 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 > >> _______________________________________________ > >> For more information regarding industry leading CCIE Lab training, > > please visit www.ipexpert.com > >> > >> Are you a CCNP or CCIE and looking for a job? Check out > > www.PlatinumPlacement.com > >> > >> http://onlinestudylist.com/mailman/listinfo/ccie_rs > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
