Configuring A Static Router Port; Disabling A Port From Becoming A Router Port - 3Com 5500-EI PWR Install Manual

Configuring a Static Router Port

In a network where the topology is unlikely to change, you can configure a port on the switch as a static
router port, so that the switch has a static connection to a multicast router and receives IGMP messages
from that router.
In Ethernet port view
Follow these steps to configure a static router port in Ethernet port view:
To do...
Enter system view
Enter Ethernet port view
Configure the current port as a
static router port
In VLAN view
Follow these steps to configure a static router port in VLAN view:
To do...
Enter system view
Enter VLAN view
Configure a specified port as a
static router port

Disabling a Port from Becoming a Router Port

A MAC-forced forwarding (MFF) network isolates hosts at Layer 2 and allows multicast packets to pass
through user ports. However, the following case may occur:
If host A joins a multicast group, it sends IGMP membership reports, and then the switch connected to it
forwards the messages out every router port. If the user port on the switch connecting to host B
becomes a router port, host B may receive the IGMP membership report, and thus obtain other
information of host A from the message.
To avoid this, you can disable a port of the Switch 5500-EI series switches from becoming a router port
so that this port will not forward IGMP membership report messages.
Follow these steps to disable a port from becoming a router port:
To do...
Enter system view
Enter Ethernet port view
Disable the port from
becoming a router port
Use the command...
system-view
interface interface-type
interface-number
multicast static-router-port
vlan vlan-id
Use the command...
system-view
vlan vlan-id
multicast static-router-port
interface-type interface-number
Use the command...
system-view
interface interface-type
interface-number
igmp-snooping query-pkt-deny
13
Remarks
—
—
Required
By default, no static router port
is configured.
Remarks
—
—
Required
By default, no static router port
is configured.
Remarks
—
—
Required
Not disabled by default.