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Questions tagged [rip]

For questions about Routing Information Protocol (RIP).

4
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3answers
969 views

RIP Packet Format

I am trying to investigate a RIP packet. It clearly states that the packet is RIP v1. But its format does not match with the either RIP v1 or v2. Any ideas what this packet actually is?
0
votes
1answer
52 views

Wireshark remote hosts

I configured a rip network. I connected two PCS to router 1, router 1 is connected to router 2 and PC 3 is connected to router 2. When I pinged PC 3 and looked at this in wireshark, in the source it ...
1
vote
1answer
34 views

What does the 'network w.x.y.z' RIPv2 command specify?

I'm studying networking protocols, and am starting with RIP. When configuring RIPv2, I see 2 pieces of information you need to relay to the router: Which interfaces to advertise RIP updates on Which ...
0
votes
1answer
58 views

A new version of RIPv2 using different keys for each router

There's a problem in a textbook that is really stumping me. How would you enhance the RIPv2 protocol to provide a (more) secure and scalable schema for distributing the updates? Describe the ...
1
vote
1answer
78 views

Why RIP announce network does not need the mask?

The below is the RIP protocol's declaring the routing command: Router(config)#router rip Router(config-router)#version 2 Router(config-router)#network 1.1.1.1 Router(config-router)#network 192.168....
4
votes
2answers
106 views

After I set the “router rip” networks, how can I check it?

In my CGR1240 I have set network 192.168.1.0 to my router rip, but how can I check it? If I add more networks in rip, how can I list all the networks I have added? I can not show the router rip in ...
0
votes
1answer
54 views

Routers and RIP violation of isolation?

I'm studying networking from the book 'A top down approach' from Kurose and Ross. In the book it is stated that routers are generally considered Layer 3 devices (i.e. implementing the stack up to ...
-1
votes
2answers
230 views

the difference between RIP and OSPF [closed]

I was working with CISCO and to create a path between switches my teachers told me that I can use 2 types of protocols, but they did not explain to me what differences there are between the two: ...
1
vote
1answer
104 views

Why does OSPF function on Network Layer whereas RIP functions on Transport Layer?

As far as I know, OSPF creates its messages directly at the network layer, whereas RIP function on UDP. Their function is pretty similar, so why is there such a difference in their messaging practice?
6
votes
3answers
556 views

Is UDP Usage in Routing Information Protocol (RIP) a Secure Practice?

I know that UDP is a connectionless transport layer protocol. Since it is easy to fake your source IP and source Port in your headers, what keeps anyone from poisoning routing tables via RIP? It seems ...
1
vote
1answer
185 views

Packet Tracer help, dropped packets and connectivity issues

I have set up a network with 3 offices on 3 different subnets. File available at, https://github.com/turntheairblue/packetTracer Router configuration is as follows, R1 - Router R2 - Router R3 - ...
1
vote
1answer
144 views

What is the purpose of “Process name” in RIP for IPv6 on Cisco Routers

I was going through Cisco documentation to configure RIP for IPv6. One of the steps says Enables the specified IPv6 RIP routing process on an interface. But they do not go into detail about this ...
2
votes
1answer
101 views

Clarifications about RIP and OSPF

What (I think) I know: RIP uses a distance vector routing approach, where each node sends to its neighbors the number of hops one should take to get to other routes if one "started" from that ...
0
votes
3answers
543 views

Why is RIP sending classless updates?

I have the following topology. I am using RIP Version 1 routing protocols. As far as i know RIP supports only classful IP addresses. So it should send 10.0.0.0 routes only. But when I run debug ip ...
1
vote
2answers
362 views

Routers using RIP can't see their own route Serial Interface

I have two routers, R2 AND R3, I've configured the RIP with no auto-summary, the serial interfaces are registered too but the routers can't see them, in this case, R2 se0/0/1 and R3se0/0/1. How can I ...
1
vote
1answer
459 views

Loopback interfaces aren't advertised via RIPv2

My topology is as so R0 as Hub R1 and R2 as spoke R2 has a loopback of 2.2.2.2, and R3 has a loopback of 3.3.3.3 R1 can ping these addresses, and is advertising 2.0.0.0 and 3.0.0.0 in RIPv2. ...
1
vote
2answers
56 views

Does RIP stores information about entire AS?

I am studying routing protocols for one of the certification exam, and confused with the following question: Does RIP V2 (Distance Vector protocol) store the distance vector table for every possible ...
1
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4answers
338 views

RIP messages by routers

How does router transmit RIP messages to other routers? RIP uses UDP (transport layer protocol) to transmit messages and routers don't operate at transport layer.
1
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2answers
573 views

RIP version 2 ping to a loopback

I have 3 routers in my topology, and two of them have loop backs.Let's say R0 is the one without the loo back. I have configured rip with no auto-summary just to make sure I can ping from R1 to the ...
2
votes
1answer
80 views

Bird rip : routes should only be received

My server should receive routes via RIP. I have tried it with Bird on Ubuntu 10.04. The server should work with the interface option passive. (Receive routes and not send) protocol kernel { ...
2
votes
1answer
151 views

Difference in convergence time IPv4 vs IPv6

Using protocols like RIP, OSPF and EIGRP, would IPv6 converge faster in smaller network like 4 routers? Would it differ in bigger networks?
1
vote
2answers
437 views

How do you define cost in Quagga for BGP and RIP?

I'm sorry if its a simple question, but its a really big problem for me at the moment. We have a project to program a router network in Quagga, and I did that (though with some problems since we only ...
1
vote
1answer
405 views

Change RIP distance in quagga

I would like to reproduce the RIP-infinite loop count problem using quagga. I try to manually set the distance to a route manually but quagga ignores my commands. r1(config-router)# distance 100 ...
1
vote
1answer
40 views

Why RIP doesn't use the router IDs?

I know that OSPF uses router IDs, for example in LSDB. But, why doesn't RIP use router IDs for anything?
1
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2answers
770 views

How does OSPF understand its directly connected networks if you're configuring interfaces?

This is a question I've seen mixed answers for online, so I'll try to clearly explain what I'm having trouble understanding. With RIP, you have your router and you explicitly tell it your directly ...
1
vote
3answers
107 views

OSPF Border Router Discovery

Hi how the routers in ospf network will discover the borders routers when i try to see the border routers with the show ip ospf border command i get : in Area 0 - R2 discover : all border ...
0
votes
1answer
643 views

Discontiguous Addresses in IP Subnets

What are the reasons for using only contiguous addresses in subnets? Will something malfunction if we use dis contiguous IP addresses? I am aware that RIP and IGRP will auto-summarize which results ...
2
votes
2answers
698 views

MPLS VPN network using BGP, RIP and OSPF

I'm working on configuring a MPLS VPN network. Here is what I'm working with: From CE1 I would like to be able to ping the loopback address of CE2 and vice versa, which is not yet possible and I do ...
0
votes
2answers
107 views

What is the correct way to construct this subnet

i have to construct a subnet in cisco packet tracer using this ip that was supposedly given by the IPS: 79.48.0.0/16 But when i try to configurate the routing using RIP, and put for example 79.48.2....
1
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1answer
139 views

Offset-list inbound outbound clarification

I had a small clarification regarding the inbound outbound usage of offset-lists since I've been reading contradicting things regarding it. So say we have a simple topology. Both R1 and R2 are ...
2
votes
1answer
948 views

How to exclude one subnet in RIPv2?

As I understand, when no auto-summary command is used, the network command could include all the interface with IP addresses included in the classful network border defined by the network command. For ...
1
vote
1answer
69 views

Would multiple RIPng processes improve convergence times and stability and larger RIP deployments

You could label this a theoretical question but I consider it a design question. Is is possible to have a large RipNG deployment using multiple RINng instances and simulate OSPF like areas? Thanks
2
votes
1answer
24 views

RIP: def route originated locally, trying to block any other route with prefix list-not working

ip prefix-list DRoute seq 5 permit 0.0.0.0/0 ! since there is an implicit deny the above should allow only the default to ! pass but it is not happening router rip version 2 network 10.0.0.0 ...
1
vote
1answer
188 views

Checking split horizon status with IPv6

In a frame relay multipoint topology where the routers are running RIP, we know that RIP by default keeps split horizon on with IPv6 and we go into the RIP process an use no ip-split horizon to ...
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2answers
90 views

Routing information

I'm confused about routing: There are a number of routing protocols. The ones I know are RIPv2 and OSPF. They allow routers to communicate with each other and share routing information. What about ...
5
votes
5answers
695 views

How we can assume which network protocol is working in which OSI Layer?

For a long time, I have this kind of silly question: How we can say some network protocols are working in X layer of the OSI model? For example, HTTP working in L7 of OSI, OSPF is L3, ICMP is L4, TCP ...
1
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1answer
524 views

Does a route need to be in the RIB in order to be redistributed?

Please can anyone help me confirming something : Is every protocol (OSPF, RIP, EIGRP,BGP) needs to have the route in the RIB in order to be able to REDISTRIBUTE it into another protocol ? Is there any ...
6
votes
2answers
538 views

Are there specific, concrete use cases for RIPv2 in modern network engineering?

Due to its limitations (small hop count, slow convergence, possibly large periodic updates), RIPv2 has always been deemed inferior to alternatives like OSPF and IS-IS. However, over the years, people ...
2
votes
1answer
10k views

RIPv2 manual subnet mask configuration?

As I understand Cisco IOS takes subnet mask from interface to which is network connected and put it in RIPv2 updates. Could you advice please if it possible to somehow manualy set subnet mask of ...
2
votes
1answer
483 views

Route selection in RIPv2 and RIPng (equal hop count)

How do RIPv2/RIPng select between equal routes? Randomly? For example, 2 broadcast domains, 5 routers, all running RIPv2 and RIPng. The | pipes represent a switch: R01 | R02 | R03 | ...
2
votes
1answer
874 views

Does RIP send the whole routing table in a Triggered Update?

I'm new to network engineering. Currently I'm studying a few routing protocols. However, when I'm studying RIP. There is a small thing that is bothering me. I wasn't sure if RIP sends all its routing ...
14
votes
2answers
7k views

In which OSI/TCP-IP model layers do BGP, RIP protocols belong?

We know that in the OSI or TCP-IP model, the higher layer utilizes the services offered by the lower layer. For example, the data link layer uses services offered by the physical layer, network layer ...
1
vote
2answers
1k views

What is a standards-based protocol?

Routing Information Protocol (RIP) is a standards-based, distance-vector, interior gateway protocol (IGP) used by routers to exchange routing information. What does it mean by standards-based ...
3
votes
1answer
913 views

Issues in Understanding RIP Hold-time, Split-Horizon and poison-reverse

I have an understanding about RIP options that to some extent contradicts with the text books. I understand that the hold-time is used to give the network enough time to converge so to avoid false ...
3
votes
2answers
2k views

Routers are not learning routes when using RIP

I am trying to implement simple scenario of RIP using Packet Tracer, first of all here is the scenario. and I have used the following commands to configure RIPv2 in each router, R1: router rip ...
4
votes
1answer
5k views

Why we can not ping to multicast address 224.0.0.9 of RIP

We know that RIP v2 uses multicast address 224.0.0.9 for periodic broadcast of routing table. So it means that every router configured with RIP V2 is monitoring for any packet with destination address ...
3
votes
1answer
12k views

RIP V2 multicasting looks as broadcasting at IP add 224.0.0.9

In RIPv1 the packets are broadcasted out all ports with dest. IP 255.255.255.255. In v2 they are multicasted with dest. IP 224.0.0.9. In Packet Tracer, this v2 packet is transmitted over all ...
4
votes
1answer
887 views

why RIP sending only maximum of 512 bytes of data

When RIP router sends update to routers, why it is limited to use only 512 bytes of UDP data. Why not more than that, even when it has a 1500 byte MTU. How is the maximum of 512 bytes determined?
2
votes
4answers
6k views

At which OSI Layer does RIP work?

At which OSI layer does the RIP protocol operate in? I tried to analyze all dynamic protocols in terms of OSI Layers, and I found RIP is at the application layer; however, I don't understand what the ...
1
vote
1answer
1k views

RIP Update Packets

How Many Routes Can be carried by a RIP Version 1 & RIP Version 2 Update Packets ? I Know Both RIP Version 1 & 2 Using the Metric of Hop Count and Maximum Hop Count is 16.