Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

router, mutlicasting

Posted on 2003-11-12
4
Medium Priority
?
296 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 

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

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

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

I have seen some questions on problems with SSH/telnet access to Cisco routers that may occur despite the fact that from a PC connected to your LAN, Internet connectivity is in place and users can access Internet sites without any issues.  There are…
In the hope of saving someone else's sanity... About a year ago we bought a Cisco 1921 router with two ADSL/VDSL EHWIC cards to load balance local network traffic over the two broadband lines we have, but we couldn't get the routing to work consi…
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…
Suggested Courses

609 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