TGPS-9084GT-M12 Series User
Manual
ORing Industrial Networking Corp
97
Label
Description
User
Indicates the QCL user
QCE#
Indicates the index of QCE
Frame Type
Indicates the type of frame to look for incoming frames. Possible
frame types are:
Any
: the QCE will match all frame type.
Ethernet
: Only Ethernet frames (with Ether Type 0x600-0xFFFF)
are allowed.
LLC
: Only (LLC) frames are allowed.
SNAP
: Only (SNAP) frames are allowed.
IPv4
: the QCE will match only IPV4 frames.
IPv6
: the QCE will match only IPV6 frames.
Port
Indicates the list of ports configured with the QCE.
Action
Indicates the classification action taken on ingress frame if
parameters configured are matched with the frame's content.
There are three action fields:
Class
,
DPL
, and
DSCP
.
Class
: Classified QoS; if a frame matches the QCE, it will be put
in the queue.
DPL
: Drop Precedence Level; if a frame matches the QCE, then
DP level will set to a value displayed under DPL column.
DSCP
: if a frame matches the QCE, then DSCP will be classified
with the value displayed under DSCP column.
Conflict
Displays the conflict status of QCL entries. As hardware
resources are shared by multiple applications, resources required
to add a QCE may not be available. In that case, it shows conflict
status as
Yes
, otherwise it is always
No
. Please note that conflict
can be resolved by releasing the hardware resources required to
add the QCL entry by pressing Resolve Conflict button.
5.7 Multicast
5.7.1 IGMP Snooping
IGMP (Internet Group Management Protocol) snooping monitors the IGMP traffic between
hosts and multicast routers. The switch uses what IGMP snooping learns to forward multicast
traffic only to interfaces that are connected to interested receivers. This conserves bandwidth
by allowing the switch to send multicast traffic to only those interfaces that are connected to
hosts that want to receive the traffic, instead of flooding the traffic to all interfaces in the VLAN.
