Packet Tracer exercise help needed.

[bytor4510]

Hi, I'm doing a packet tracer exercise for my ccna at uni. Here's the running config,

Router#show run

Building configuration...

Current configuration : 1269 bytes

!

version 15.4

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname Router

!

no ip cef

no ipv6 cef

!

spanning-tree mode pvst

!

interface Tunnel1

ip address 192.168.0.1 255.255.255.0

mtu 1476

tunnel source GigabitEthernet0/0/0

tunnel destination 99.0.0.38

!

!

interface GigabitEthernet0/0/0

ip address 99.0.0.33 255.255.255.240

duplex auto

speed auto

!

interface GigabitEthernet0/0/1

ip address 99.0.0.49 255.255.255.252

duplex auto

speed auto

!

interface GigabitEthernet0/2/0

switchport mode access

switchport nonegotiate

!

interface GigabitEthernet0/2/1

switchport mode access

switchport nonegotiate

!

interface GigabitEthernet0/2/2

switchport mode access

switchport nonegotiate

!

interface GigabitEthernet0/2/3

switchport mode access

switchport nonegotiate

!

interface Vlan1

ip address 99.0.0.4 255.255.255.224

!

router ospf 100

router-id 10.10.10.10

log-adjacency-changes

network 99.0.0.32 0.0.0.15 area 0

network 99.0.0.48 0.0.0.3 area 100

!

ip classless

ip route 192.168.1.0 255.255.255.0 GigabitEthernet0/0/0

!

ip flow-export version 9

!

no cdp run

!

line con 0

!

line aux 0

!

line vty 0 4

login

!

end

Router#

There are 9 isr4321 routers, 5 2960 switches, 11 pc's and 1 server and 10 areas. I've set up all the addressing and areas are all working. There's a GRE tunnel that's also working.

Working on R1 

Router#show ip int bri

Interface IP-Address OK? Method Status Protocol

GigabitEthernet0/0/0 99.0.0.33 YES NVRAM up up

GigabitEthernet0/0/1 99.0.0.49 YES NVRAM up up

GigabitEthernet0/2/0 unassigned YES unset up up

GigabitEthernet0/2/1 unassigned YES unset up down

GigabitEthernet0/2/2 unassigned YES unset up down

GigabitEthernet0/2/3 unassigned YES unset up down

Tunnel1 192.168.0.1 YES manual up up

Vlan1 99.0.0.4 YES manual up up

There's a single pc connected to G0/2/0 which can ping all interfaces on R1 but fails to ping any further. I've been stuck on this for about 6 hours, any help would be much appreciated?

[Martin L]

it would be easier to look at  your PT file;  you can attach your PT file here; it must be in a zip format;

Regards, ML
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[bytor4510]

Yes I know, but I'm a bit reluctant to post it as its an exam paper. I don't want to take the risk.

Thanks for replying

[Georg Pauwen]

Hello,

I agree with @Martin L , you need to advertise:

network 99.0.0.0 0.0.0.31 area 0

or

network 99.0.0.0 0.0.0.31 area 100

[Martin L]

OK, so PC's gateway is 99.0.0.4 and PC can ping it; Can others ping that IP? Looks like network 99.0.0.x /27 is not advertised by OSPF.   

Regards, ML
**Please Rate All Helpful Responses **

[bytor4510]

99.0.0.33 is the gateway for the pc, interface 0/0/0 or should it be 0/2/0? I can't give that interface an IP address so should I give the address of the vlan 1?. I can ping every interface on R1 from the pc. No, other devices can't ping 99.0.0.4. we are told the pc can not participate in ospf on interface g0/2/0. That interface is an add-on module, so I'm guessing it's an svi? Not familiar with configuring that type of interface. I've place it in vlan 1

[bytor4510]

Ok so changing the default gateway on the pc didn't make any difference. Here's OSPF database

Router#show ip ospf da

OSPF Router with ID (10.10.10.10) (Process ID 100)

Router Link States (Area 0)

Link ID ADV Router Age Seq# Checksum Link count

5.5.5.5 5.5.5.5 474 0x80000004 0x00a013 1

11.11.11.11 11.11.11.11 479 0x80000003 0x0034b2 1

4.4.4.4 4.4.4.4 479 0x80000003 0x002ef2 1

8.8.8.8 8.8.8.8 479 0x80000003 0x0043b8 1

2.2.2.2 2.2.2.2 524 0x80000002 0x008944 1

7.7.7.7 7.7.7.7 474 0x80000004 0x006b9a 1

6.6.6.6 6.6.6.6 474 0x80000005 0x00bb50 1

3.3.3.3 3.3.3.3 480 0x80000003 0x006cbd 1

10.10.10.10 10.10.10.10 468 0x80000005 0x0036bb 1

Net Link States (Area 0)

Link ID ADV Router Age Seq# Checksum

99.0.0.38 11.11.11.11 468 0x80000008 0x0058c0

Summary Net Link States (Area 0)

Link ID ADV Router Age Seq# Checksum

99.0.0.48 10.10.10.10 514 0x80000001 0x00663f

99.0.0.60 5.5.5.5 514 0x80000001 0x008429

99.0.0.76 8.8.8.8 514 0x80000001 0x008908

99.0.0.72 7.7.7.7 519 0x80000001 0x00cfc9

99.0.0.64 11.11.11.11 513 0x80000001 0x00a7e9

99.0.0.56 4.4.4.4 514 0x80000001 0x00caea

99.0.0.52 2.2.2.2 515 0x80000001 0x002f92

99.0.0.68 6.6.6.6 519 0x80000001 0x00168b

99.0.0.0 3.3.3.3 515 0x80000001 0x00729b

Router Link States (Area 100)

Link ID ADV Router Age Seq# Checksum Link count

10.10.10.10 10.10.10.10 523 0x80000001 0x0072ff 1

Summary Net Link States (Area 100)

Link ID ADV Router Age Seq# Checksum

99.0.0.32 10.10.10.10 519 0x80000001 0x00be03

99.0.0.76 10.10.10.10 449 0x80000002 0x005532

99.0.0.64 10.10.10.10 449 0x80000003 0x00cbc6

99.0.0.56 10.10.10.10 449 0x80000004 0x001a7f

99.0.0.68 10.10.10.10 449 0x80000005 0x009fec

99.0.0.0 10.10.10.10 449 0x80000006 0x009f4c

Router#

[bytor4510]

Could it be the way I have g0/2/0 configured? Anywho, this exercise is divided into 4 tasks and worth 20%. This is task 3 (worth 5%), configure a gre tunnel (which I have, and its working I've tested using traceroute) but it says configure the pc's and test connectivity (which I can't, boo!) So if I can't do it I'll lose a couple of %.....**bleep**, I know but it bugs me. ACL next, then that's it. At some point I'll need to call it a day and move on to the other questions on the exam which are essays. I've got until June 3rd, that's not enough time

[Martin L]

no, I would make sure that other devices can  ping 99.0.0.4 ok.  focus on that.  try static route on neighboring ospf router to see if you can ping 99.0.0.4 

Regards, ML
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[Martin L]

Please attach partial work or empty PT activity  with instructions for us to look at.

[Martin L]

Right, anyone connected to switching module in that router, aka Gig0/2/0, will use SVI interface. so Pings go to interface VLan 1 IP via module internally.   IP on interface Vlan 1 and vlan 1 is ok if access port is in vlan 1. That int vlan 1 is default gateway for any PC connected to access port.

Problem is other devices can't ping 99.0.0.4.  I guess advertise it  via OSPF or add static route on other end router so that other devices can ping 99.0.0.4 OK .

Ping is 2-way process.  Ping to and from must be OK for ping to be OK.  I guess, your return ping does not know how to reach source.

Regards, ML
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[bytor4510]

Thanks for helping. 

I've set a static route on r1 "ip route 192.168.1.0 255.255.255.0 g0/0/0" and 0.0.0.0 0.0.0.0 g0/0/0 still not working. g0/0/0 is the interface of my gre tunnel.

[Georg Pauwen]

Hello,

it is very tedious to give advice, since we don't really know what you have configured, and how your devices are connected. I would suggest to post the zipped project file, and then delete your post when this has been solved.