Upvel UP-308FEW — настройки Miscellaneous: Управление VLAN и Очередями Выхода [46/52]

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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.

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