Foundation Topics - Dense-Mode Routing Protocols - Operation of Protocol Independent Multicast Dense Mode

4 important questions on Foundation Topics - Dense-Mode Routing Protocols - Operation of Protocol Independent Multicast Dense Mode


What does the C and T flag mean?
What is the RPF neighbor?
Which interface is the traffic forwarded?
R3# show ip mroute

(10.1.1.10/32, 226.1.1.1), 00:00:12/00:02:48, flags: CT
Incoming interface: Serial0/1, RPF nbr 10.1.4.1
Outgoing interface list:
FastEthernet0/0, Forward/Dense, 00:00:12/00:00:00

C-flag directly connected
T-flag traffic forwarded on shortest path tree

neighbor 10.1.4.1

forward interface fastethernet 0/0

What is the state of interface serial 0/1? When will the router flood again if no prune message is recieved?


Incoming interface: Serial0/0, RPF nbr 10.1.2.1
Outgoing interface list:
Serial0/1, Prune/Dense, 00:00:08/00:02:52

Prune

This means that no traffic is forwarding over serial 0/1

2:52 min/sec

What is default prune timer? What happens when a router does not recieve a prune message?

3 min

When prune timer expires traffic will flood again
  • Higher grades + faster learning
  • Never study anything twice
  • 100% sure, 100% understanding
Discover Study Smart

When is prune message sent? 3

-Recieving packets on a non-RPF interface
-No locally connected hosts
-No downstream routers

The question on the page originate from the summary of the following study material:

  • A unique study and practice tool
  • Never study anything twice again
  • Get the grades you hope for
  • 100% sure, 100% understanding
Remember faster, study better. Scientifically proven.
Trustpilot Logo