CCNP TSHOOT - Ticket 7

Client1#sh ip int brief

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0            unassigned      YES DHCP   up                    up  

FastEthernet0/1            unassigned      YES NVRAM  administratively down down

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No IP address has assigned to Client1. Check trunk status in ASW1.

ASW1#sh int trunk

Port      Mode         Encapsulation  Status        Native vlan

Po4       on           802.1q         trunking      1

Po5       on           802.1q         trunking      1

Port      Vlans allowed on trunk

Po4       1-1005

Po5       1-1005

Port      Vlans allowed and active in management domain

Po4       1,10,20

Po5       1,10,20

Port      Vlans in spanning tree forwarding state and not pruned

Po4       1,10,20

Po5       1,10,20

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Trunks are properly configured.

Check access vlan in ASW1 again for fa1/0 as follow.

interface FastEthernet1/0

 switchport access vlan 10

!

interface FastEthernet1/1

 switchport access vlan 10

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Port fa1/0 has assigned with correct VLAN 10. So, it's working well.

So, let's move to DSW1 switch. Check EIGRP neighours relationship first as follow.

DSW1#sh ip eigrp neighbors

IP-EIGRP neighbors for process 10

H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq

                                            (sec)         (ms)       Cnt Num

2   10.2.2.1                Vl20              12 00:04:41   65   390  0  14

1   10.2.1.2                Vl10              12 00:04:41   72   432  0  15

0   10.2.4.14               Fa1/13            12 00:05:12  741  4446  0  13

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Check carefully, network connected to R2, 10.1.4.X are not appearning in neighbours list. So, let's move to R4 to check it's EIGRP

Here is the result.

R4#sh ip eigrp neighbors

IP-EIGRP neighbors for process 1

The whole lab's EIGRP AS is 10 and it's not 1. So, the problem is in R4's EIGRP process. 

Change back to EIGRP process from 1 to 10 in R4 will solve the problem.

The main cause of why Client1 not getting IP is, there is broken connection between DSW1 and R4's EIGRP process.

So, the error device is R4, EIGRP process, and can be fixed by changing EIGRP AS from 1 to 10.
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Trying to ping from Client 1 to Web server 209.65.200.241 will fail because of missing EIGRP routes in OSPF network. So, only from R4 can reach and none of the devices behind R4 can't reach to OSPF and outside network.

To fix it, redistribute EIGRP (AS 10) routes to OSPF network in R4 as follow;


router ospf 1
redistribute eigrp 10 subnets