Configuring Vlan Stacking On A Bridging Cable Modem; Enabling Vlan Stacking Through An Enhanced Bridge Mode Tlv - Motorola BSR 2000 Configuration And Management Manual

Release 1.0
2. Use the no bridge cable modem command to remove a particular cable modem
Note: The BSR ignores a VLAN TLV received in the registration request from
a cable modem, if VLAN mapping is already established for that cable
modem with the bridge cable modem command.
VLAN Tagging requires that each bridging cable modem be assigned to a
different VLAN number. An external L2 switch is required to bridge layer 2
traffic between the cable modem bridged VLANs.
VLAN ID 1 is reserved for use by the attached Layer 2 switch/router for
management purposes and as the default "native" VLAN for that equipment.
VLAN ID 1 may not be configured on the BSR for Ethernet port tagged
routing or for cable modem Layer 2 bridging.

Configuring VLAN Stacking on a Bridging Cable Modem

VLAN stacking enables the transport of traffic from multiple VLANs by
encapsulating one VLAN's traffic within another VLAN. VLAN stacking allows the
BSR to forward and receive stacked VLAN traffic. VLAN stacking is enabled or
disabled on a per cable modem basis to control whether CPE traffic may be tagged
with an inner or stacked VLAN tag by a particular bridging CM. The "outer" or MSO
Vlan tag is added by the BSR. CPE and MSO VLAN tags can co-exist in a single
packet. The BSR does not look at the CPE VLAN tag for any information.
Enabling VLAN Stacking through an Enhanced Bridge Mode
TLV
Motorola provides a proprietary enhanced "Bridge Mode TLV", in a cable modem's
configuration file, that enables VLAN stacking for the corresponding cable modem.
The format of the enhanced Bridge Mode TLV is as follows:
526360-001-00 Rev. B
from a specified VLAN, as follows:
no bridge cable modem <mac> <2-4094>
MOT(config)#
MGBI
Configuring VLAN Tagging
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