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Beginner

OSPF Client PC's to ISP

Hi,

 

This is pretty basic but I think my mind has drawn a blank. I am struggling to make my 3 routers communicate with my ISP routers. Its simple, I need to add the route within OSPF of the other routers. I cant seem to get it right and can only ping from router one.

 

My assignment is due monday so any fast help is great. My lecturer mentioned he wanted a loopback on the ISP but im not sure what this means either. I think the stress has got to me now :)

 

I uploaded my packet tracer file. Any username and passwords are cisco. 

 

Any help would be appreciated.

Capture.PNG

Kind Regards,
Daniel Growth
1 ACCEPTED SOLUTION

Accepted Solutions
Beginner

Re: OSPF Client PC's to ISP

@Georg Pauwen fixed it

 

I had to add 

network 145.45.5.0 0.0.0.255 area 0

to the warmingham router :)

 

Then the default route worked.

Kind Regards,
Daniel Growth
11 REPLIES 11
VIP Mentor

Re: OSPF Client PC's to ISP

Hello,

 

it looks like your ISP router needs a default route:

 

ip route 0.0.0.0 0.0.0.0 Serial0/1/0

Beginner

Re: OSPF Client PC's to ISP

Sorry please explain this answer.
What will that achieve?
Kind Regards,
Daniel Growth
VIP Mentor

Re: OSPF Client PC's to ISP

Hello,

 

the static default route will make the ISP router reachable from everywhere. What exactly is the assignment, does the ISP router have to be part of OSPF ?

Beginner

Re: OSPF Client PC's to ISP

I did put the default route as that on the ISP but I still cant ping the interfaces 145.45.5.1 - 100 from any routers.
I guess the other routers will need to know where the ISP gateway is.
Kind Regards,
Daniel Growth
VIP Mentor

Re: OSPF Client PC's to ISP

Hello,

 

after adding the default route to the ISP router, I can ping 145.45.5.1 and 145.45.5.100 from anywhere, including all other routers.

 

I am sending over the revised project file...

Beginner

Re: OSPF Client PC's to ISP

I am unable to open you file due to incompatibility.
I have added ip route 0.0.0.0 0.0.0.0 Serial0/1/0 to the ISP router.
I ping from any PC and get destination unreachable.
Kind Regards,
Daniel Growth
Beginner

Re: OSPF Client PC's to ISP

@Georg Pauwen fixed it

 

I had to add 

network 145.45.5.0 0.0.0.255 area 0

to the warmingham router :)

 

Then the default route worked.

Kind Regards,
Daniel Growth
VIP Mentor

Re: OSPF Client PC's to ISP

Hello,

 

either that, or add the static default route on the Warmingham-Router as indicated in my last post.

VIP Mentor

Re: OSPF Client PC's to ISP

Hello,

 

add:

 

ip route 0.0.0.0 0.0.0.0 Serial0/1/1

 

to the Warmingham-Router...

Enthusiast

Re: OSPF Client PC's to ISP


my guess ISP does not have routes to you.
if u add ip route 0.0.0.0 0.0.0.0 145.45.5.100 on Wahsington router,
also, add routes back to you on ISP.  ISP should have static routes back to you,

 

Ping is 2 -way process. you need route to me, then I need route back to you.

it is not likely that ISP will have a default route to you or me; ISP runs static or BGP .
it works now

 

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

VIP Advisor

Re: OSPF Client PC's to ISP

Hello

Remove the no passive-interface serial 0/1/1 from Warmingham HQ and enable ospf between that rtr and ISP then you establish connectivity you desire.


Warmingham
router ospf 1

no passive-interface serial 0/1/1
network 145.45.5.1 0.0.0.0.0 area 0

ISP
router ospf 1
network 145.45.5.100 0.0.0.0.0 area 0



kind regards
Paul

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