Note that GVRP and the spanning tree protocol (STP) interact with each other. After a
stable spanning tree is determined (at initialization or after a reconfiguration due to a
failure) the GVRP protocol recomputes the best VLAN assignments on all network-role
ports, given the new spanning tree topology.
GVRP can be enabled (default setting) or disabled per virtual switch. However, all
virtual switches on an Ethernet network need to be in the same GVRP mode. For
interworking flexibility one can optionally disable STP per network-role port; implicitly
GVRP is then disabled as well on that port. GVRP must be disabled in order to
interwork with nodes that do not support GVRP.
Max. number of VLANs
The maximum supported number of active VLANs (VLAN identifiers) is limited for
reasons of controller performance, and varies depending on product, tagging mode and
GVRP activation status. The following table shows the applicable values. Note that
even if the maximum number of active VLANs is limited to 64, 247, or 1024, VLAN
identifiers out of the full range of VLAN identifiers (0 { 4093) can be used for tagging
purposes.
Max. number of active VLANs
Product Transparent tagging (VPN
tagging) mode
1
IEEE 802.1Q / IEEE 802.1ad tagging mode
GVRP enabled GVRP disabled
1643 AM / 1643 AMS
2
64 VLANs per card 64 VLANs per
card
64VLANs per NE
Notes:
1. No distinction is made with respect to the STVRP activation status, because STVRP is
enabled per default and cannot be disabled.
2. An alarm (
MACcVLANOVFW – Maximum number of VLAN instances exceeded) will
be reported when the max. number of active VLANs per TransLAN
®
card is exceeded.
3. The LambdaUnite
®
MSS transparent tagging mode rather compares to the provider
bridge tagging mode (see “IEEE 802.1ad VLAN tagging” (p. 8-69)) than to this
transparent tagging (VPN tagging) mode.
A maximum of 5000 VLAN/port associations is supported per network element, except
for the 1643 AM/1643 AMS, where the maximum number of VLAN/port associations
is 2000. An alarm (
MIBcVLANOVFW –
Maximum number of VLAN instances exceeded in MIB) will be reported when the
max. number of VLAN/port associations per network element is exceeded.
Traffic provisioning
GARP VLAN Registration Protocol (GVRP)
....................................................................................................................................................................................................................................
8-50
Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007
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