![background image](http://html1.mh-extra.com/html/3com/3c15500-network-director-pc/3c15500-network-director-pc_user-manual_441352514.webp)
510
C
HAPTER
13: V
LAN
M
ANAGEMENT
The port on the Switch 3300 connected to the PS Hub has one VLAN,
VLAN A, configured on it. Only the Switch 3300 has any awareness of
VLANs. The PS Hub and end stations are VLAN unaware devices. 3Com
Network Director will infer that the PS Hub and the end-stations are
members of VLAN A.
If the user launched the
Properties
dialog box on one of the end-stations,
it would be shown as being a member of VLAN A. See
“Properties dialog
box”
on
page 524
. Similarly if the user selected the
Show VLANs
menu
option. See
“Show VLANs”
on
page 514
to view VLAN A, the PS Hub
and end stations would also be highlighted, not just the Switch 3300.
The rules used for inferring VLAN membership for VLAN-unaware devices
are as follows.
■
If a port on a VLAN-aware device is a member of VLAN A and all
devices hanging off the port are VLAN-unaware, then these devices
will be assumed to be members of VLAN A as well. When working out
the bounds of the set of VLAN-unaware devices, 3Com Network
Director will stop when it reaches a router.
■
3Com Network Director can infer that a device is a member of more
than one VLAN.
VLAN equivalence
As well as inferring the VLAN membership of VLAN-unaware devices,
3Com Network Director also attempts to match up VLANs configured on
VLAN-aware devices, in order to determine whether any two VLANs
configured on different devices are in fact the same VLAN. For example,
with the network below:
Summary of Contents for 3C15500 - Network Director - PC
Page 4: ......
Page 34: ......
Page 38: ...34 ABOUT THIS GUIDE ...
Page 50: ...46 CHAPTER 1 GETTING STARTED ...
Page 64: ...60 CHAPTER 2 PRODUCT ACTIVATION ...
Page 213: ...Components 209 Figure 75 Export to Visio Dialog Box ...
Page 220: ...216 CHAPTER 5 WORKING WITH THE MAP Figure 84 Double Clicking on a Router in the Tree ...
Page 264: ...260 CHAPTER 6 VIEWING DEVICE DETAILS Figure 117 Security Tab for a Device ...
Page 276: ...272 CHAPTER 6 VIEWING DEVICE DETAILS ...
Page 322: ...318 CHAPTER 7 MONITORING THE NETWORK ...
Page 385: ...Examples 381 Figure 189 Attach Alerts Dialog Box ...
Page 406: ...402 CHAPTER 9 PERFORMANCE REPORTING ...
Page 431: ...Components 427 History View dialog box Figure 210 History View Dialog Box ...
Page 440: ...436 CHAPTER 10 RMON Host View dialog box Figure 219 Host View Dialog Box ...
Page 476: ...472 CHAPTER 11 CREATING REPORTS ...
Page 502: ...498 CHAPTER 12 CONFIGURING SINGLE DEVICES ...
Page 526: ...522 CHAPTER 13 VLAN MANAGEMENT Figure 272 Options Dialog Box VLANs Tab ...
Page 567: ...Components 563 Figure 305 Selecting the Link to the End Station on the Map ...
Page 626: ...622 CHAPTER 14 BULK CONFIGURATION ...
Page 684: ...680 CHAPTER 16 UPGRADING DEVICE SOFTWARE ...
Page 814: ...810 CHAPTER 19 BACKING UP DEVICE CONFIGURATIONS ...
Page 838: ...834 CHAPTER 20 LIVE UPDATE ...
Page 894: ...890 APPENDIX G ADDING MAC ADDRESS VENDOR TRANSLATIONS ...