QTECH QSW-2800 Инструкция по настройке - Manual (Page 115)

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BPDU Tunnel application
15.2 bpdu-tunnel Configuration
Task List
bpdu-tunnel configuration task list:
1. Configure tunnel MAC address globally
2. Configure the port to support the tunnel
1. Configure tunnel MAC address globally
2. Configure the port to support the tunnel
15.3 Examples of bpdu-tunnel
Special lines are used in a service provider network to build user-specific Layer 2 networks. As
a result, a user network is broken down into parts located at different sides of the service
provider network. As shown in Figure, User A has two devices (CE 1 and CE 2) and both
devices belong to the same VLAN. User’s network is divided into network 1 and network 2,
which are connected by the service provider network. When Layer 2 protocol packets cannot
implement the passthrough across the service provider network, the user’s network cannot
process independent Layer 2 protocol calculation (for example, spanning tree calculation), so
they affect each other.
Command Explanation
Global mode
bpdu-tunnel dmac <mac>
no bpdu-tunnel dmac
Configure or cancel the tunnel MAC address
globally.
Command Explanation
Port mode
bpdu-tunnel
{stp|gvrp|uldp|lacp|dot1x}
no bpdu-tunnel
{stp|gvrp|uldp|lacp|dot1x}
Enable the port to support the tunnel, the no
command disables the function.