Alcatel Carrier Internetworking Solutions Omni Switch/Router - Manual (Page 558)

Non-Mobile Groups and AutoTracker VLANs
Page 19-16
Spanning Tree and Non-Mobile Groups
Each Group uses one Spanning Tree for bridging. The OmniS/R supports both 802.1d and
IBM Spanning Tree protocols. The Spanning Tree state for the port is Forwarding. Ports that
are in Blocked state, or in another non-Forwarding state, will not receive frames from the
router port. The figure below illustrates this concept.
Spanning Tree State and Routed Frames
OmniS/R
12345678
123456
Group 2
Ports 1 and 2
Server
Port 1: Forwarding
State
VLAN 1
(default VLAN #1)
Virtual Router
Workstation
Port 2: Blocked
State
VLAN 2
Routed frames not
received because attached
port is in Blocking state.
Routed frames received
because attached port
is in Forwarding state.