The following table gives an overview of the different modes and a list of the
corresponding supported functionality:
VLAN Tagging
Mode
Virtual Switch Mode Ethertype/TPID QoS_CQS
(Quality of
Service -
Classification
Queueing
Scheduling)
Dynamic VLAN
Registration Protocol
Spanning Tree
Implementation
valid per pack valid perunit
VPN Tagging Repeater N/A N/A N/A No STP
LAN Interconnect
(Dedicated
Bandwidth)
N/A N/A STVRP Multiple STP
LAN-VPN (Shared
Bandwidth)
N/A N/A
LAN-VPN with QoS This mode of operation is supported in previous releases. However, it is no
longer supported from the 1643 Access Multiplexer AM / 1643 Access
Multiplexer Small AMS Release 4.0 onwards.
IEEE
802.1Q/IEEE
802.1ad
VLAN tagging
Spanning Tree
Switched Network
600 ... FFFF,
except for
8100
disabled GVRP Single STP
enabled
8100 enabled
Repeater 600 ... FFFF,
except for
8100
disabled N/A No STP
Interoperability of operational modes
Virtual Switches that are configured in the same operational mode can interwork.
Virtual Switches not configured in the same operational mode do not interwork in all
cases. If a Virtual Switch is configured in the “Repeater” mode or the “STP Switch”
mode, it can only interwork with Virtual Switches that are configured in the same
mode.
Interworking between a remote LAN-interconnect virtual switch and a VPN virtual
switch is not prohibited, because the LAN-interconnect mode can be seen as a special
case of the VPN mode.
Repeater mode
A virtual switch in repeater mode consists of exactly one LAN port and one WAN port
in a fix 1:1 relationship. All Ethernet frames entering the virtual switch at a LAN port
are transparently forwarded to the corresponding WAN port and transported over the
network. None of the standard IEEE Std 802.1D/Q processes (MAC address learning,
MAC frames forwarding and filtering, VLAN classification and filtering) applies.
Received frames are relayed to the other port of the virtual switch, irrespective of their
format or contents.
Ethernet Overview
Operational modes
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11-28
Alcatel-Lucent - Proprietary
See notice on first page
365-312-801R7.2
Issue 3, May 2007
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