Answer / jitendera kumar sinha

no shahin ankur is not asking about how to configure deault
root ankur is asking that what hapeen when we implemenr
default root to that router which is directly coected to
the isp router.
you have just expalinf that how to implement but what
happen after that u donot explain
so here is explanation

on the router which is coneced to isp we never implemet
default root

now question is why

answer is so simple it produse routing loop
now question arises how
let we implement deafult root os the router which is
directly conected to router now any packet comes from isp
that router forward to r2 whaich is another router
another router r2 doesnot have any entry of that ip address
but have an enrtry about deafult root then it will agin
send it to r1 now r1 have default root confrigation so he
again sent it toi the r2 and process contute

so one thing always remebr the router which is directly
conected to isp we never implement default

thenquestion is what routing protocol should we implemented
on that router

it is highly recomneded that you should confihure staic
routing on that router dirctly conected to isp router

thansk
help it will help you both

Answer / shahin

After of all ur question is not so clear. But still i m
trying to answer it.

When we use default route -

a) when our network is a stub network.
b) when we don't know the destination network IP.

In this case, it seems like u don't know the destination
network IP. so we hv to configure Default route on ROUTER 1.

Default route configuration command is -

Router(config-router)#ip route 0.0.0.0 0.0.0.0 [Next Hop
IP/Exit Interface]

Commands explanation -

a) ip route: The command used to add a static or default route
b) 0.0.0.0: The wildcard used to say “any” network not
already in the routing table
c) 0.0.0.0: Wildcard mask to say “any” network mask
d) 172.10.0.2/S0(Suppose): Next hop gateway/Exit Interface.



Suppose u don't know the destination network IP, as its
necessary to knw in static routing. How can u configure if u
don't knw this.

Router(config-router)#ip route 0.0.0.0 0.0.0.0 s1

*** (Suppose S1 is the interface which connects to ISP's
router).

So any traffic, that is destined for outside ur network will
be forwarded to S1 interface of ROUTER 1. So whenever ISP's
router receive the packet it'll check the L3 address &
forward accordingly.


Thats all about it. Hope it may help u to understand.

Thank You all.. Keep Posting.

Shahin.

Answer / mr.shahin07

Thank u so much Jitendera..!!!!

In version 11.2 of the IOS, a Cisco router configured for frame-relay can automatically detect the LMI type. What is this known as? A.) Psychic B.) ESP C.) Inverse ARP D.) Hello E.) Reverse ARP F.) Autosense

2 Answers  

---

what is router,bridges,hubs?

12 Answers  

---

I want to configure a serial interface on a 7500 with a VIP card. What global config command would give me access to a serial interface on a 7500? A.) int 1/0/0 B.) int s 1/0/0 C.) int s 1/1 D.) int s0.1 E.) int s1

2 Answers  

---

IP extended access lists use which of the following as a basis for permitting or denying packets? A.) destination address B.) all of the above C.) protocol D.) source address E.) port

3 Answers  

---

How can you add the 192.168.100.0/30 network to EIGRP without involving the 192.168.100.4/30 network as well?

6 Answers  

---

Why twist in twisted pairs?

0 Answers   HCL, Steria,

---

Put the following steps of encapsulation into the correct order: 1) The data is broken into segments to be organized 2) Frames are converted to 1s and 0s to be put on the wire 3) Packets are converted into frames 4) Information that users enter is converted into data 5) The segments are changed to packets to be routed A.) 4, 1, 3, 2, 5 B.) 4, 5, 1, 3, 2 C.) 2, 3, 1, 4, 5 D.) 4, 1, 5, 3, 2

3 Answers  

---

What command would show the version of the IOS that you are running? A.) show nvram B.) show version C.) show startup-config D.) show ios E.) ver -a F.) show ram

1 Answers  

---

What IP command would you use to test the entire IP stack? A.) Stack-test B.) Arp C.) Telnet D.) Ping E.) Trace

2 Answers  

---

Which is true regarding store-and-forward switching method? A.) Latency varies depending on frame-length B.) Latency is constant C.) It is default for all Cisco switches D.) It only reads the destination hardware address before forwarding the frame

1 Answers  

---

Identify the command that disables name-to-address translation? A.) Router(config-dns)# no ip domain-lookup B.) Router(config)# no address translation C.) Router(config)# no ip domain-lookup D.) Router(config)# ip domain-lookup

1 Answers  

---

Identify the 2 commands the saves the running-config to NVRAM? A.) write memory B.) copy running-config startup-config C.) write network D.) write backup

2 Answers  

---