THOMSON R7.4, Руководство по настройке

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E-DOC-CTC-20080229-0001 v1.0
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4| Ethernet Bridge and VLANs
4.3 VLAN Awareness
What is VLAN awareness?
VLAN awareness of the bridge indicates whether the bridge interprets the VLAN tags of received frames:
If the bridge is VLAN aware , the bridge recognizes VLAN-tagged frames and interprets the VLAN tags.
The VLAN tag of a received frame identifies the VLAN to which the frame belong. The bridge forwards
this VLAN-tagged frame only to bridge ports configured as an explicit member of the same VLAN.
If the bridge is non-VLAN aware , the bridge does not interpret the VLAN tags.
Configuring VLAN awareness
By default, the bridge is non-VLAN aware.
To make the bridge VLAN aware, execute following command:
To check the VLAN awareness of the bridge, execute following command:
=>:eth bridge config vlan=enabled
=>:eth bridge config
Ageing : 300
Filter : no_WAN_broadcast
VLAN : enabled
IPQoS precedence map for TOS:
IP priority QoS internal class
0 4
1 7
2 9
3 11
4 13
5 14
6 15
7 15
If the bridge is non-VLAN aware, you must disable all VLAN-related parameters of the bridge ports
(port VLAN membership, ingressfiltering, acceptvlanonly and so on) to avoid unexpected
behaviour. Whenever any VLAN configuration is used, VLAN awareness must be enabled.