What is the meaning of PASSIVE interface in RIP, IGRP, EIGRP
& OSPF??
Can any one explain..!!!
- 6 Answers
- 22416 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / siba (dip)
Passive interface command is used to control the
advertisement of routing protocol,passive interface command
restrict outgoing advertisement only.But in the case is
little bit different in EIGRP. In EIGRP, when passive
interface command is enable between two routers , it is not
only suppersing routing updates but also HELLO messages
also.In result, router also lost the neighbor relationship
with routers. So it also suppers the incoming updates
also.With EIGRP running on a network, the passive interface
command stops both outgoing and incoming routing updates.
since the effect of the command cause the router to stop
sending and receiving hello packets over an interface.
So try it today - configuer eigrp & don't put passive
interface command then after configuering eigrp, try the
command <debug eigrp packet hello>it will show all the
infomation required And also try <show eigrp neighbor>You
will get information.Then you try <passive interface
command>repeat !st & 2nd command above mentioned , you
won't get any information.For trouble shoot configure
<distributed-list>And <no passive-interface command>.
In the case of RIP & IGRP passive interface command stops
the router from sending updates to a particular neighbor to
listen & use routing updates from that neighbor .
| Is This Answer Correct ? | 19 Yes | 2 No |
Answer / jitenmdera kuamr sinha
sahin i have ased that question and you answered it
ok tell me importance of that comand
#no passive-interface
what is the output of that comand
your answer is in that comand
| Is This Answer Correct ? | 9 Yes | 2 No |
Answer / sanusi abu darma
Passive interface command is the correct solotion which
prevent the trsnmission of unnecessary routing update
through a router interface and it also allows the router to
advertise the network to other routers.
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / jitu
yes i know i [posted two question i know first one is too
hard for ccnaer but second one is in the sylbes of ccna but
know ,one is here for answer it
i can serch it one google or any wher else but posted soln
acts as a bacisc and fundamental.
| Is This Answer Correct ? | 2 Yes | 2 No |
Answer / amal thomas
Passive-interface command is used in all routing protocols to disable sending updates out from a specific interface. However the command behavior varies from one protocol to another.
In RIP this command will disable sending multicast updates via a specific interface but will allow listening to incoming updates from other RIP speaking neighbors.
This simply means that the router will still be able to receive updates on that passive interface and use them in the routing table.
In EIGRP the passive-interface command stops sending outgoing hello packets, hence the router can not form any neighbor relationship via the passive interface. This behavior stops both outgoing and incoming routing updates.
In OSPF the passive-interface has a similar behavior to EIGRP. The command suppresses hello packets and hence neighbor relationships.
| Is This Answer Correct ? | 1 Yes | 1 No |
'Show cdp neighbors detail' show the following 3 pieces of information? A.) Hardware platform B.) Software version C.) Same as 'show version' command D.) Up to 1 address for each protocol E.) Non-direct connected routers
tell me our traditional ip routing is what A--conectless b----conection orented c-----pacekt switching d------ckt switching slect any two this is the question which i forgot to incoprate next-questions
Of the following characteristics, which apply to UDP? Connection-oriented Connectionless Error checking Low overhead Best-effort delivery
10. Which STP state populates the MAC address table but doesn't forward data frames? A. Blocking B. Listening C. Learning D. Forwarding
can we measure how much a host exact bandwidth using by a network cable which is communicating over the network? options: 1- via Router 2- Switch, 3- other device... if yes.. then how ( with every option)
Which company mange ip's?
srry for inconvnce ..here is complete qs...ignore the previous 1 3 router configured with RIP & Ripv2 rotuer 1- connected with router 2 having sr ip 10.0.1.2 routing : ripv2 E0:192.168.1.10 router 2: connected with router 1 and router 3 having sr 0 ip 10.0.1.3 & sr 1 ip 11.0.1.2 routing :rip & ripv2 E0=192.168.10.2 router 3: connected with router 2 having sr ip 11.0.1.3 routing: rip E0=172.16.10.2 is there communication possible?
Identify 2 reasons for disabling CDP? A.) If the router is not configured for RIP B.) Save bandwidth by eliminating overhead C.) If the router is configured for Appletalk D.) When connected to a non-Cisco router
Hey Folks how are you i guess some of guys are newly visitors of this site so let me introduce my self. I am jitendera kumar sinha working for cisco system (india)( Network engineer L2) and i was also a regular Visitors of this site and i have provided lots of answer and i do not know how many are correct :-) By the way i am here again to learn some thing and share my knowledge which is beyond CCNA Scope and and it is some where related to ccnp ( switching )and ccnp Security as i am pursuing ccnp security so i am going to start the topics from switching and will share my knowledge and try to brush-up my knowledge.... so let me know any topic in switching where you are facing difficulty and i will try to solve it so please post one topic and i will reply weekly as i am getting time on Sunday only
Identify the 3 methods routers learn paths to destinations? A.) Dynamic routing B.) None of the above, configured by default C.) Default routes D.) Administrative distance E.) Static routes
Identify 2 features of X.25? A.) Supports only IP B.) Utilizes switched and permanent virtual circuits C.) Contains minimal flow control and error recovery D.) Utilizes LAPB as it's data-link protocol
Can anyone explain in details port fast, uplink fast & backbone fast features introduced by CISCO (The GOD FATHER of NETWORKING.... Hehehehehe).
CCNA 
