Caution Level: Intermediate
Operating System: Windows XP
Latest Version / Release Date: 18.104.22.16801 / 07 Apr 2005
The mrouter port is the port from the switch point of view that links to a mulicast router. The presence of at least one mrouter port is very necessary for the IGMP snooping operation to work across switches. IGMP snooping can be described as the mechanism to restrict multicast traffic to only the ports that have receivers attached. The mechanism increases efficiency as it allows a layer2 switch to send multicast packets on only the ports that requires them. The switch would flood the packets on every thought without IGMP snooping. The switch ‚Äúlistens' for the IGMP messages IGMP by the router and the end hosts. In this way, the switch builds an IGMP snooping table that has a list of all the ports that have asked a particular multicast group. IGMP snooping operates only if the multicast MAC address maps to this IEEE-compliant MAC range.
Unless you update your drivers regularly you may face hardware performance issues.
To check your drivers you should manually verify every device on your system for driver updates
The catalyst by default switches has IGMP snooping enabled. IGMP is a protocol that allows the receivers (hosts) to inform a multicast router (IGMP querier) of the end host intention to receive specific multicast traffic. It is the protocol that runs between the end hosts and router and then allows; routers to request end hosts if they need a specific multicast stream (IGMP query) and end hosts to respond or tell the router if they seek a specific multicast stream (IGMP reports). Any version of IP 4 (IPv4) with destination IP ranging form 22.214.171.124 to 126.96.36.199 is a multicast stream. Users of P31 mRouter Port (WDM) are advised to utilize the newest versions of the driver so that they can use its functions easily and better. Versions that are old are known to cause device conflicts. Driver's updates should be done at least once per every month. It is highly recommended you run a free registry scan for and P31 mRouter Port (WDM) errors before installing any driver updates.