Basic Question
satishtech
Member Posts: 243
in CCNA & CCENT
Four Routers are connected end to end.The last router
on the right has a loopback interface configured.How
do I ping that Interface from the first router that is
on the left.
1.Configure a routing protocol.
2.Configure static routes
3.Configure default routes.
4.Any one of the above.
on the right has a loopback interface configured.How
do I ping that Interface from the first router that is
on the left.
1.Configure a routing protocol.
2.Configure static routes
3.Configure default routes.
4.Any one of the above.
Comments
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aftereffector
Member Posts: 525 ■■■■□□□□□□
You need to ping from one router, through another router, through a third router, to a fourth router. The ICMP packet will need some kind of route to know where to go. Do you think a static route would work for that? What about a routing protocol? Could default routes get the packet from one side of the network to the other and back?CCIE Security - this one might take a while... -
d4nz1g
Member Posts: 464
You need IP reachability for each loopback address.
Since all the 3 options provide this, the right answer should be "any of the above". -
Heero
Member Posts: 486
The default route answer doesn't really work since you would still need statics or a routing protocol for the return traffic. 1 and 2 should be the correct answers, with 1 being the best practice solution in almost all situations like this.
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bharvey92
Member Posts: 420 ■■■□□□□□□□
Answer 1 and 2 would be correct, however depending on the capability of the router you may want to configure static routing (due to overhead).2018 Goal: CCIE Written [ ] -
networker050184
Mod Posts: 11,962 Mod
What kind of over head would make you want to go with static routing instead?An expert is a man who has made all the mistakes which can be made. -
Heero
Member Posts: 486
A router with many OSPF adjacencies all running OSPF fast hellos with like a 20 multiplier or something? Or does he mean overhead on the link?
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bharvey92
Member Posts: 420 ■■■□□□□□□□
networker050184 wrote: »What kind of over head would make you want to go with static routing instead?
Spot on Heero. An OSPF router with many adjacencies and many LSA types flowing through the device.2018 Goal: CCIE Written [ ] -
networker050184
Mod Posts: 11,962 Mod
That really isn't a concern in modern hardware unless you are doing something terribly, terribly wrong with your OSPF.An expert is a man who has made all the mistakes which can be made.
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bharvey92
Member Posts: 420 ■■■□□□□□□□
Always worth considering, you never know what hardware you are going to bump into on a customers site
2018 Goal: CCIE Written [ ] -
satishtech
Member Posts: 243
I tried all three options on packet tracer and all work.
THough adding a network in RIP is the easiest , just one step.
