EX2500 Ethernet Switch Configuration Guide

Figure 1: Default VLAN Settings

802.1Q Switch

 

 

 

VLAN 1

 

 

 

Port 1

Port 2

Port 3

Port 4

Port 5

Port 6

Port 7

...

PVID = 1

 

 

 

 

 

 

 

Incoming untagged packet

Key

DA

SA

Data

CRC

CRC

Outgoing Data untagged packet

(unchanged) SA

DA

By default:

All ports are assigned PVID = 1

All ports are untagged members of VLAN 1

BS45010A

NOTE: The port numbers specified in these illustrations might not directly correspond to the physical port configuration of your switch model.

When a VLAN is configured, ports are added as members of the VLAN, and the ports are defined as either tagged or untagged (see Figure 2 through Figure 5).

The default configuration settings for the EX2500 switch have all ports set as untagged members of VLAN 1 with all ports configured as PVID = 1. In the default configuration example shown in Figure 1, all incoming packets are assigned to VLAN 1 by the default port VLAN identifier (PVID =1).

Figure 2 through Figure 5 illustrate generic examples of VLAN tagging. In Figure 2, untagged incoming packets are assigned directly to VLAN 2 (PVID = 2). Port 5 is configured as a tagged member of VLAN 2, and port 7 is configured as an untagged member of VLAN 2.

NOTE: The port assignments in the following figures are not meant to match the EX2500 switch.

24„ VLAN Tagging

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Juniper Networks EX2500 manual Default Vlan Settings