bridge vlan mode
199
✓
Layer 2
Switching
Modules
✓
Multilayer
Switching
Modules
bridge vlan mode
Determines whether data with a unicast MAC address can be forwarded
between VLANs.
Valid Minimum Abbreviation
b v mode
Important Considerations
■
When you select a VLAN mode, keep the following considerations in
mind:
■
allOpen
— Use this less restrictive mode if you do not have
security issues concerning the forwarding of data between VLANs.
It is the default VLAN mode for all VLANs that you create. It permits
data with a unicast MAC address to be forwarded between VLANs.
The allOpen mode implies that the module uses a single bridge
address table for all of the VLANs on the module.
■
allClosed
— Use this restrictive mode if you are concerned about
security between VLANs. Data cannot be forwarded between
VLANs but can still be routed between VLANs. This mode implies
that each VLAN that you create has its own address table.
■
For the Multilayer Switching Modules, if you have set allClosed mode
on the module as well as enabled the Spanning Tree Protocol (STP),
you can use the command
bridge vlan stpMode
to enable traffic to
be routed over ports that have been put into the blocking state by STP.
■
Remember to set a VLAN mode for each switching module as well as
the switch fabric module. Changing this mode removes all VLANs and
redefines the default VLAN.
■
Before you use the
bridge vlan mode
command to change the
mode, you must remove all routing interfaces, including router port IP
interfaces. If routing interfaces are defined, the module displays this
message:
could not change configured VLAN mode - interface in
use by client.
Options
Prompt
Description
Possible Values [Default]
VLAN mode Selected VLAN mode for the entire
module
■
allOpen
■
allClosed
allOpen
(factory
default), or
current value
Summary of Contents for 4007
Page 1: ...http www 3com com Switch 4007 Command Reference Guide Part No 10013693 Published May 2000...
Page 14: ......
Page 22: ...22 ABOUT THIS GUIDE...
Page 34: ...34 CHAPTER 1 ADMINISTRATION OVERVIEW...
Page 78: ...78 CHAPTER 4 SIMPLE NETWORK MANAGEMENT PROTOCOL SNMP...
Page 100: ...100 CHAPTER 5 ETHERNET PORTS...
Page 174: ...174 CHAPTER 9 RESILIENT LINKS...
Page 322: ...322 CHAPTER 13 VIRTUAL ROUTER REDUNDANCY VRRP...
Page 476: ...476 CHAPTER 16 INTERNET PACKET EXCHANGE IPX...
Page 552: ...552 CHAPTER 18 QUALITY OF SERVICE QOS AND RESOURCE RESERVATION PROTOCOL RSVP...
Page 566: ...566 APPENDIX A TECHNICAL SUPPORT...