SNR S2989G-48TX-DC — настройка портов и изоляция в сетевых устройствах [69/553]

2-5

S2989G-24TX Operation Manual Chapter 2 Layer 2 services

Configuration

Here are some situations that frequently occurs in port configuration and the advised

solutions:

 Two connected fiber interfaces won’t link up if one interface is set to auto-negotiation

but the other to forced speed/duplex. This is determined by IEEE 802.3.

 The following combinations are not recommended: enabling traffic control as well as

setting multicast limiting for the same port; setting broadcast, multicast and unknown

destination unicast control as well as port bandwidth limiting for the same port. If such

combinations are set, the port throughput may fall below the expected performance.

 For Combo port, it supports the forced copper mode and the forced fiber mode

(default mode), here, copper port will not be up.

2.2

Port Isolation

2.2.1

Introduction to Port Isolation Function

Port isolation is an independent port-based function working in an inter-port way,

which isolates flows of different ports from each other. With the help of port isolation, users

can isolate ports within a VLAN to save VLAN resources and enhance network security.

After this function is configured, the ports in a port isolation group will be isolated from

each other, while ports belonging to different isolation groups or no such group can

forward data to one another normally. No more than 16 port isolation groups can a switch

have.

2.2.2

Task Sequence of Port Isolation

1. Create an isolate port group

2. Add Ethernet ports into the group

3. Specify the flow to be isolated

4. Display the configuration of port isolation

1. Create an isolate port group

Command

Explanation

Global Mode

isolate-port group <WORD>

no isolate-port group <WORD>

Set a port isolation group; the no operation

of this command will delete the port

isolation group.