UP-308FEW / UP-316FEW
Miscellaneous
Miscellaneous Settings page allows to configure Output Queue Aging Time, VLAN Striding,
IGMP Snooping V1 & V2 and VLAN Uplink.
Output Queue Aging Time
This function prevents the situation when the traffic jam on one port may cause the
congestion of other ports. In some applications, e.g. IPTV Multicast communication, the
multicast stream is continuously generated from the source port, and the client port may be
congested because of the limited bandwidth or slow network processing ability. Then, the
Pause frame of Flow Control will be generated once the packet buffer is full. With the Output
Queue Aging Time function, a packet stored at an output queue for a long time will be aged
out and become a useless packet. You can set the Aging Time to 200, 400, 600 or 800 ms.
VLAN Striding
For some network environments, the network administrator may probably want to filter
undesired broadcast or multicast packets to enhance the network bandwidth utilization and
forward
only meaningful unicast packets to a specific destination. VLAN is a good
mechanism to block broadcast packets, but it can also block unicast communication between
VLANs. To solve this issue, a special function called “VLAN striding” is designed. If VLAN
striding is enabled, the switch will forward unicast packets to the destination port, no matter
whether the destination port is in the same VLAN. The unicast packet can stride across
VLANs.
User Manual 46