[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

router, mutlicasting

Posted on 2003-11-12
4
Medium Priority
?
297 Views
Last Modified: 2010-04-17
suppose a router is multicast enabled .Suppose it receives a packet
it could be  a mulicastpacket encapsulated within a  normal ip packet(thru tunneling)
or it could be  normal packet.
how does the multicast capab;e router diferentiate.
does it do a decapsulation every time it receives a packet

0
Comment
Question by:vikasgkutty
1 Comment
 

Accepted Solution

by:
RonaldLeibfreid earned 200 total points
ID: 9931337
The router doesn't care.  If the router can "see" the IP Multicast header of a tunneled datagram, then it's the endpoint of either a GRE or DVMRP tunnel.  The actions taken by a router configured as a tunnel endpoint are completely independent of the payload of the tunneled datagram.  Once the tunnel processing reveals the original IP header, the router hopefully can act on the datagram appropriately.   If there were routers between the two tunnel endpoints that had the capabilities to process the IP multicast datagram, that wouldn't have mattered since those routers would never get a chance to do so.  It is up to the designers of the network to ensure datagrams enter and exit tunnels (are tunnel encapsulated and decapsulated) at the appropriate points in the network to ensure proper IP multicast routing and forwarding takes place.


0

Featured Post

New feature and membership benefit!

New feature! Upgrade and increase expert visibility of your issues with Priority Questions.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

There are two basic ways to configure a static route for Cisco IOS devices. I've written this article to highlight a case study comparing the configuration of a static route using the next-hop IP and the configuration of a static route using an outg…
Quality of Service (QoS) options are nearly endless when it comes to networks today. This article is merely one example of how it can be handled in a hub-n-spoke design using a 3-tier configuration.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

872 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question