AutoTracker VLANs
Page 22-13
So How Do I Get Devices Assigned to
VLAN
s Over a Backbone?
The way to get devices assigned to
VLAN
s over a backbone is to define logical
VLAN
policies
that so assign them. An example is shown on the facing page utilizing
IP
and
IPX
protocol
policies. The network on the facing page uses port policies (and current port policy function-
ality) to assign the backbone port to
VLAN
s on each switch so that traffic can flow out onto
the backbone from these
VLAN
s.
The problem of remote
VLAN
assignments is solved by the
IP
and
IPX
protocol policies. When
a frame is received from a backbone port, the frame is examined to determine if it matches
any
VLAN
membership rules. Let’s say Device D on switch 2 transmits an
IP
frame. The frame
travels the
FDDI
backbone and enters switch 1 on port 3-1. AutoTracker learns the frame and
assigns it to
VLAN
3, since
VLAN
3 has an
IP
protocol policy and the frame is
IP
.
Notice that with this approach:
• VLAN membership is consistent between the two switches.
• In a multi-switch environment, no frames are lost in switches along the traffic path because
of the inconsistent VLAN membership of a frame’s source and destination devices.
• Devices can be moved from switch to switch and they will be assigned to the same VLAN
– without reconfiguring AutoTracker or the device.
• As was the original intent, it is possible to create two
VLAN
s in this sample network, one
for Devices A and B and one for Devices C and D. As is apparent, this was impossible
using port policies.
Summary of Contents for Omni Switch/Router
Page 1: ...Part No 060166 10 Rev C March 2005 Omni Switch Router User Manual Release 4 5 www alcatel com ...
Page 4: ...page iv ...
Page 110: ...WAN Modules Page 3 40 ...
Page 156: ...UI Table Filtering Using Search and Filter Commands Page 4 46 ...
Page 164: ...Using ZMODEM Page 5 8 ...
Page 186: ...Displaying and Setting the Swap State Page 6 22 ...
Page 202: ...Creating a New File System Page 7 16 ...
Page 270: ...Displaying Secure Access Entries in the MPM Log Page 10 14 ...
Page 430: ...OmniChannel Page 15 16 ...
Page 496: ...Configuring Source Route to Transparent Bridging Page 17 48 ...
Page 542: ...Dissimilar LAN Switching Capabilities Page 18 46 ...
Page 646: ...Application Example DHCP Policies Page 20 30 ...
Page 660: ...GMAP Page 21 14 ...
Page 710: ...Viewing the Virtual Interface of Multicast VLANs Page 23 16 ...
Page 722: ...Application Example 5 Page 24 12 ...
Page 788: ...Viewing UDP Relay Statistics Page 26 24 ...
Page 872: ...The WAN Port Software Menu Page 28 46 ...
Page 960: ...Deleting a PPP Entity Page 30 22 ...
Page 978: ...Displaying Link Status Page 31 18 ...
Page 988: ...Displaying ISDN Configuration Entry Status Page 32 10 ...
Page 1024: ...Backup Services Commands Page 34 14 ...
Page 1062: ...Diagnostic Test Cable Schematics Page 36 24 ...
Page 1072: ...Configuring a Switch with an MPX Page A 10 ...
Page 1086: ...Page B 14 ...
Page 1100: ...Page I 14 Index ...