ZyXEL Communications IES-1248-51 Betriebsanweisung PDF herunterladen (Seite 111)

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Chapter 13 Switch Setup

IES-1248-51V User’s Guide

111

Join Timer Join Timer sets the duration of the Join Period timer for GVRP in

milliseconds. Each port has a Join Period timer. The allowed Join Time

range is between 100 and 65535 milliseconds; the default is 200

milliseconds.

Leave Timer Leave Timer sets the duration of the Leave Period timer for GVRP in

milliseconds. Each port has a single Leave Period timer. Leave Time

must be two times larger than Join Timer; the default is 600

milliseconds.

Leave All Timer Leave All Timer sets the duration of the Leave All Period timer for

GVRP in milliseconds. Each port has a single Leave All Period timer.

Leave All Timer must be larger than Leave Timer.

Port Isolation

Active

Turn on port isolation to block communications between subscriber

ports. When you enable port isolation you do not need to configure

the VLAN to isolate subscribers.

MAC Anti-

Spoofing

Active

Turn on MAC anti-spoofing to monitor for and prevent MAC address

“spoofing” by malicious parties.

Switch Mode Select Standalone to use both of the IES-1248-51V’s Ethernet ports

(ENET 1 and ENET 2) as uplink ports.

Note: Standalone mode is recommended for network topologies

that use loops.

Use Daisychain mode to cascade (daisychain) multiple IES-1248-

51V. The IES-1248-51V uses Ethernet port one (ENET 1) as an uplink

port to connect to the Ethernet backbone and uses Ethernet port two

(ENET 2) to connect to another (daisychained or subtending) IES-

1248-51V.

Note: Daisychain mode is recommended for network topologies

that do not use loops.

Priority Queue

Assignment

IEEE 802.1p defines up to 8 separate traffic types by inserting a tag

into a MAC-layer frame that contains bits to define class of service.

Frames without an explicit priority tag are given the default priority of

the ingress port. Use the next two fields to configure the priority

level-to-physical queue mapping.

The device has 4 physical queues that you can map to the 8 priority

levels for outgoing Ethernet traffic. The device has 8 physical queues

that you can map to the 8 priority levels for outgoing ADSL traffic.

Traffic assigned to higher index queues gets through the device faster

while traffic in lower index queues is dropped if the network is

congested.

Priority Level The following descriptions are based on the traffic types defined in the

IEEE 802.1d standard (which incorporates IEEE 802.1p).

Priority 7 Typically used for network control traffic such as router configuration

messages.

Priority 6 Typically used for voice traffic that is especially sensitive to jitter

(jitter is the variations in delay).

Table 16 Switch Setup (continued)

LABEL DESCRIPTION

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 653 654

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