3com corebuilder 10002211 Manuel D’Utilisation

A

PPENDIX

 C: VLAN

S

 

ON

 

THE

 C

ORE

B

UILDER

 S

YSTEM

For IP VLANs only, the CoreBuilder system optionally supports 
configuring of individual IP VLANs with network layer subnet addresses. 
With this additional layer 3 information, you can create independent IP 
VLANs that share the same switch ports for multiple IP VLANs. Data is 
flooded according to both the protocol (IP) and the layer 3 information 
in the IP header to distinguish among multiple IP VLANs on the same 
switch port. This configuration is discussed in 

 

When you start the CoreBuilder system, the system automatically 
creates a default VLAN. Initially, the default VLAN includes all of the 
switch ports in the system. In the CoreBuilder system, the default VLAN 
serves to define:

■

The flood domain for protocols not supported by any VLAN in the system

■

The flood domain for protocols supported by a VLAN in the system but 
received on nonmember ports

Both cases represent exception flooding conditions that are described in 
the following sections.

Table C-1  Supported Protocols for VLAN Configuration 

IP

IP, ARP, RARP (Ethertype, SNAP PID)

Novell IPX

IPX (Ethertype, DSAP, SNAP PID)

AppleTalk

DDP, AARP (Ethertype, SNAP PID)

Xerox XNS

XNS IDP, XNS Address Translation, XNS Compatibility 
(Ethertype, SNAP PID)

DECnet

DEC MOP, DEC Phase IV, DEC LAT, DEC LAVC (Ethertype, 
SNAP PID)

SNA

SNA Services over Ethernet (Ethertype)

Banyan VINES

Banyan (Ethertype, DSAP, SNAP PID)

X25

X.25 Layer 3 (Ethertype)

NetBIOS

NetBIOS (DSAP)

Default

Default (all protocol types)