LevelOne GEL-5261, User Manual

Page: 444 / 570

Chapter 14
| Multicast Filtering
Layer 2 IGMP (Snooping and Query for IPv4)
– 444 –
Specifying Static
Interfaces for a
Multicast Router
Use the Multicast > IGMP Snooping > Multicast Router (Add Static Multicast Router)
page to statically attach an interface to a multicast router/switch.
Depending on network connections, IGMP snooping may not always be able to
locate the IGMP querier. Therefore, if the IGMP querier is a known multicast router/
switch connected over the network to an interface (port or trunk) on the switch, the
interface (and a specified VLAN) can be manually configured to join all the current
multicast groups supported by the attached router. This can ensure that multicast
traffic is passed to all the appropriate interfaces within the switch.
Command Usage
IGMP Snooping must be enabled globally on the switch (see “Configuring IGMP
Snooping and Query Parameters” on page 440 ) before a multicast router port can
take effect.
Parameters
These parameters are displayed:
Add Static Multicast Router
◆
VLAN – Selects the VLAN which is to propagate all multicast traffic coming
from the attached multicast router. (Range: 1-4094)
◆ Interface – Activates the Port or Trunk scroll down list.
◆ Port or Trunk – Specifies the interface attached to a multicast router.
Show Static Multicast Router
◆ VLAN – Selects the VLAN for which to display any configured static multicast
routers.
◆ Interface – Shows the interface to which the specified static multicast routers
are attached.
Show Current Multicast Router
◆
VLAN – Selects the VLAN for which to display any currently active multicast
routers.
◆ Interface – Shows the interface to which an active multicast router is attached.
◆ Type – Shows if this entry is static or dynamic.
◆ Expire – Time until this dynamic entry expires.