3Com 10002211 manual Table A-2 describes the fields in the CacheDisplay

A-12 APPENDIX A: IP MULTICAST ROUTING

Table A-2describes the fields in the CacheDisplay.

Table A-2 Field Attributes for the CacheDisplay

Field	Description
Origin	The source of the incoming packets. Entries preceded by an angle
	bracket (>) indicate a multicast subnetwork. Entries without an
	angle bracket beneath subnetwork entries are multicast routers
	within that subnetwork.
Mcast-group	The destination multicast group
CTmr	Cache timer: the amount of time a cache entry has to remain in the
	cache
Age	Number of seconds (s), minutes (m), or hours (h) that the cache
	entry has been in existence
PTmr	The time remaining, in seconds (s), minutes (m), or hours (h), before
	another prune will be sent to prune the Spanning Tree.
In-If	Interface number on which that gateway is connected. Traffic is
	expected to originate from this interface.
	T represents the tunnel; P denotes that a prune has been sent to
	this tunnel.
Out-If	Set of interfaces on which the traffic will be flooded out. I repre-
	sents the interface.