Chapter 23 VLAN Stacking

23.4 Configuring VLAN Stacking

Click Advanced Applications > VLAN Stacking to display the screen as shown.Figure 95 Advanced Application > VLAN Stacking

The following table describes the labels in this screen.

Table 63 Advanced Application > VLAN Stacking

LABEL

DESCRIPTION

Active

Select this checkbox to enable VLAN stacking on the Switch.

 

 

Port

The port number identifies the port you are configuring.

 

 

*

Settings in this row apply to all ports.

 

Use this row only if you want to make some settings the same for all ports. Use this row first to set

 

the common settings and then make adjustments on a port-by-port basis.

 

Note: Changes in this row are copied to all the ports as soon as you make them.

 

 

Role

Select Normal to have the Switch ignore frames received (or transmitted) on this port with VLAN

 

stacking tags. Anything you configure in SPVID and Priority of the Port-based QinQ or the

 

Selective QinQ screen are ignored.

 

Select Access Port to have the Switch add the SP TPID tag to all incoming frames received on

 

this port. Select Access Port for ingress ports at the edge of the service provider's network.

 

Select Tunnel Port (available for Gigabit ports only) for egress ports at the edge of the service

 

provider's network. Select Tunnel Port to have the Switch add the Tunnel TPID tag to all

 

outgoing frames sent on this port.

 

In order to support VLAN stacking on a port, the port must be able to allow frames of 1526 Bytes

 

(1522 Bytes + 4 Bytes for the second tag) to pass through it.

 

 

Tunnel

TPID is a standard Ethernet type code identifying the frame and indicates whether the frame

TPID

carries IEEE 802.1Q tag information. Enter a four-digit hexadecimal number from 0000 to FFFF

 

that the Switch adds in the outer VLAN tag of the frames sent on the tunnel port(s). The Switch

 

also uses this to check if the received frames are double-tagged.

 

The value of this field is 0x8100 as defined in IEEE 802.1Q. If the Switch needs to communicate

 

with other vendors’ devices, they should use the same TPID.

 

Note: You can define up to four different tunnel TPIDs (including 8100) in this screen at a time.

 

 

 

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ES3500 Series User’s Guide