From: shiran guez (shiranp3@gmail.com)
Date: Mon Oct 15 2007 - 09:39:54 ART
this is scenario is like the one in Lab 13 task 2.3 with task 9.1
the concept is the same the IP's and DHCP Server router number are
different.
it is not a reachablity issue, it is either something missing in the config
or something missing in my understanding of how this works, as I you can see
the DHCP Server responds to R5 and R5 receive the Asked information
R5 is configured to relay that Address to his peer R4 and for some reason it
is not happen!
On 10/15/07, Joseph Saad <joseph.samir.saad@gmail.com> wrote:
>
> Can I have the lab number?
>
> On 10/15/07, shiran guez <shiranp3@gmail.com> wrote:
> >
> > yes
> >
> > On 10/15/07, Joseph Saad <joseph.samir.saad@gmail.com > wrote:
> > >
> > > can you ping 132.20.54.5 from R3?
> > >
> > >
> > > On 10/15/07, shiran guez <shiranp3@gmail.com > wrote:
> > > >
> > > > R5#ping 132.20.53.3
> > > >
> > > > Type escape sequence to abort.
> > > > Sending 5, 100-byte ICMP Echos to 132.20.53.3, timeout is 2 seconds:
> > > > !!!!!
> > > >
> > > > R3#sh ip rou
> > > > R3#sh ip route 132.20.54.0
> > > > Routing entry for 132.20.54.0/24
> > > > Known via "ospf 1", distance 110, metric 20
> > > > Tag 5120, type extern 2, forward metric 10
> > > > Last update from 132.20.53.5 on Ethernet0/0, 01:41:16 ago
> > > > Routing Descriptor Blocks:
> > > > * 132.20.53.5, from 150.1.5.5 , 01:41:16 ago, via Ethernet0/0
> > > > Route metric is 20, traffic share count is 1
> > > > Route tag 5120
> > > >
> > > > there is no reachability issue! no need for any static routes.
> > > >
> > > >
> > > >
> > > > On 10/15/07, Joseph Saad <joseph.samir.saad@gmail.com > wrote:
> > > > >
> > > > > "unicasting BOOTREPLY for client cc04.11a1.0000 to relay
> > > > > 132.20.54.5 ".
> > > > >
> > > > > I believe if you enable debug ip packet detail, this will show as
> > > > > unroutable.
> > > > >
> > > > > On 10/15/07, Joseph Saad <joseph.samir.saad@gmail.com > wrote:
> > > > > >
> > > > > > Does R3 have reachability to the network of R4 serial interface?
> > > > > >
> > > > > > Try adding a static route on R3 for 132.20.54.x pointing out to
> > > > > > R5's IP address adjacent to R3.
> > > > > >
> > > > > > On 10/15/07, shiran guez <shiranp3@gmail.com > wrote:
> > > > > > >
> > > > > > > Hi
> > > > > > >
> > > > > > > this is a task taken from IEWB
> > > > > > >
> > > > > > > R4
> > > > > > > |
> > > > > > > \
> > > > > > > /
> > > > > > > |
> > > > > > > R5
> > > > > > >
> > > > > > > R4 connected via Serial link to R5
> > > > > > >
> > > > > > >
> > > > > > > R4#sh run int ser1/1
> > > > > > > Building configuration...
> > > > > > >
> > > > > > > Current configuration : 121 bytes
> > > > > > > !
> > > > > > > interface Serial1/1
> > > > > > > ip address negotiated
> > > > > > > encapsulation ppp
> > > > > > > no peer default ip address
> > > > > > > serial restart-delay 0
> > > > > > > end
> > > > > > >
> > > > > > > R5#
> > > > > > >
> > > > > > > ip dhcp-server 132.20.53.3
> > > > > > > !
> > > > > > > interface Serial1/1
> > > > > > > ip address 132.20.54.5 255.255.255.0
> > > > > > > encapsulation ppp
> > > > > > > peer default ip address dhcp
> > > > > > > serial restart-delay 0
> > > > > > > end
> > > > > > >
> > > > > > > R5#ping 132.20.53.3
> > > > > > >
> > > > > > > Type escape sequence to abort.
> > > > > > > Sending 5, 100-byte ICMP Echos to 132.20.53.3, timeout is 2
> > > > > > > seconds:
> > > > > > > !!!!!
> > > > > > >
> > > > > > > R3 is the DHCP Server as you can see the above ping there is
> > > > > > > no reachablilty
> > > > > > > problem
> > > > > > >
> > > > > > > ip dhcp excluded-address 132.20.54.1 132.20.54.3
> > > > > > > ip dhcp excluded-address 132.20.54.5 132.20.54.254
> > > > > > > !
> > > > > > > ip dhcp pool R4
> > > > > > > network 132.20.54.0 255.255.255.0
> > > > > > >
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:31.108: DHCPD: DHCPDISCOVER received from client
> > > > > > >
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > *Mar 1 12:24: 31.112: DHCPD: Allocate an address without
> > > > > > > class information (
> > > > > > > 132.20.54.0)
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:33.116: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4 ).
> > > > > > > *Mar 1 12:24:33.120: DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > *Mar 1 12:24:33.656: DHCPD: DHCPDISCOVER received from client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > *Mar 1 12:24:33.660: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4).
> > > > > > > *Mar 1 12:24:33.664: DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:34.540: DHCPD: DHCPDISCOVER received from client
> > > > > > >
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > *Mar 1 12:24: 34.540: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4).
> > > > > > > *Mar 1 12:24:34.540: DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:37.700 : DHCPD: DHCPDISCOVER received from
> > > > > > > client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > *Mar 1 12:24:37.700: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4).
> > > > > > > *Mar 1 12:24:37.700 : DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > *Mar 1 12:24:38.624: DHCPD: DHCPDISCOVER received from client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:38.628: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4).
> > > > > > > *Mar 1 12:24:38.632: DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:41.672: DHCPD: DHCPDISCOVER received from client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > *Mar 1 12:24:41.676: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4).
> > > > > > > *Mar 1 12:24:41.680: DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:42.740: DHCPD: DHCPDISCOVER received from client
> > > > > > >
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > *Mar 1 12:24: 42.744: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4).
> > > > > > > *Mar 1 12:24:42.748: DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:46.660 : DHCPD: DHCPDISCOVER received from
> > > > > > > client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > *Mar 1 12:24:46.664: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4).
> > > > > > > *Mar 1 12:24:46.668 : DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > *Mar 1 12:24:46.876: DHCPD: DHCPDISCOVER received from client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31through
> > > > > > > relay
> > > > > > > 132.20.54.5.
> > > > > > > R3#
> > > > > > > *Mar 1 12:24:46.880: DHCPD: Sending DHCPOFFER to client
> > > > > > >
> > > > > > > 0063.6973.636f.2d31.3332.2e32.302e.3534.2e35.2d53.6572.6961.6c31.2f31(
> > > > > > > 132.20.54.4).
> > > > > > > *Mar 1 12:24:46.884: DHCPD: unicasting BOOTREPLY for client
> > > > > > > cc04.11a1.0000to relay
> > > > > > > 132.20.54.5 .
> > > > > > > R3#un all
> > > > > > >
> > > > > > > R4 as you can see is not reciving that address:
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > *Mar 1 12:34:24.264: Se1/1 IPCP: Timeout: State ACKsent
> > > > > > > *Mar 1 12:34: 24.268: Se1/1 IPCP: O CONFREQ [ACKsent] id 9
> > > > > > > len 10
> > > > > > > *Mar 1 12:34: 24.268: Se1/1 IPCP: *Address 0.0.0.0*(0x030600000000)
> > > > > > > *Mar 1 12:34:24.344: Se1/1 IPCP: I CONFREQ [ACKsent] id 9 len
> > > > > > > 10
> > > > > > > *Mar 1 12:34:24.348: Se1/1 IPCP: Address 132.20.54.5(0x030684143605)
> > > > > > > *Mar 1 12:34:24.352: Se1/1 IPCP: O CONFACK [ACKsent] id 9 len
> > > > > > > 10
> > > > > > > *Mar 1 12:34:24.352 : Se1/1 IPCP: Address 132.20.54.5(0x030684143605)
> > > > > > > *Mar 1 12:34:24.648: Se1/1 IPCP: I CONFREJ [ACKsent] id 7 len
> > > > > > > 10
> > > > > > > *Mar 1 12:34:24.652: Se1/1 IPCP: *Address 0.0.0.0*(0x030600000000)
> > > > > > > *Mar 1 12:34:24.652: Se1/1 IPCP: ID 7 didn't match 9,
> > > > > > > discarding packet
> > > > > > > R4(config)#
> > > > > > > *Mar 1 12:34:26.252: Se1/1 IPCP: I CONFREQ [ACKsent] id 10
> > > > > > > len 10
> > > > > > > *Mar 1 12:34:26.252: Se1/1 IPCP: Address 132.20.54.5(0x030684143605)
> > > > > > > *Mar 1 12:34:26.256: Se1/1 IPCP: O CONFACK [ACKsent] id 10
> > > > > > > len 10
> > > > > > > *Mar 1 12:34:26.260: Se1/1 IPCP: Address 132.20.54.5(0x030684143605)
> > > > > > > *Mar 1 12:34:26.280: Se1/1 IPCP: Timeout: State ACKsent
> > > > > > > *Mar 1 12:34:26.284: Se1/1 IPCP: O CONFREQ [ACKsent] id 10
> > > > > > > len 10
> > > > > > > *Mar 1 12:34:26.284: Se1/1 IPCP: *Address 0.0.0.0*(0x030600000000)
> > > > > > > R4(config)#
> > > > > > > *Mar 1 12:34:28.296: Se1/1 IPCP: Timeout: State ACKsent
> > > > > > > *Mar 1 12:34:28.300: Se1/1 IPCP: State is ACKsent
> > > > > > > *Mar 1 12:34: 28.784: Se1/1 IPCP: I CONFREJ [ACKsent] id 9
> > > > > > > len 10
> > > > > > > *Mar 1 12:34: 28.788: Se1/1 IPCP: *Address 0.0.0.0*(0x030600000000)
> > > > > > > *Mar 1 12:34:28.788: Se1/1 IPCP: ID 9 didn't match 10,
> > > > > > > discarding packe
> > > > > > > R3 allocated the correct address:
> > > > > > >
> > > > > > > R3#sh ip dhcp binding
> > > > > > > Bindings from all pools not associated with VRF:
> > > > > > > IP address Client-ID/ Lease
> > > > > > > expiration Type
> > > > > > > Hardware address/
> > > > > > > User name
> > > > > > > 132.20.54.4 0063.6973.636f.2d31. Mar 01 2002 12:31
> > > > > > > PM
> > > > > > > Automatic
> > > > > > > 3332.2e32.302e.3534 .
> > > > > > > 2e35.2d53.6572.6961.
> > > > > > > 6c31.2f31
> > > > > > >
> > > > > > > --
> > > > > > > Shiran Guez
> > > > > > > MCSE CCNP NCE1
> > > > > > > http://cciep3.blogspot.com
> > > > > > > http://www.linkedin.com/in/cciep3
> > > > > > >
> > > > > > > _______________________________________________________________________
> > > > > > >
> > > > > > > Subscription information may be found at:
> > > > > > > http://www.groupstudy.com/list/CCIELab.html
> > > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > > --
> > > > Shiran Guez
> > > > MCSE CCNP NCE1
> > > > http://cciep3.blogspot.com
> > > > http://www.linkedin.com/in/cciep3
> > > >
> > >
> > >
> >
> >
> > --
> > Shiran Guez
> > MCSE CCNP NCE1
> > http://cciep3.blogspot.com
> > http://www.linkedin.com/in/cciep3
> >
>
>
-- Shiran Guez MCSE CCNP NCE1 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3
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