Dell Force10 E300, Configuration Manual

Page: 972 / 1262

972 | Service Provider Bridging
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The same is true for GVRP. 802.1ad specifies that provider bridges participating in GVRP use a reserved
destination MAC address called the Provider Bridge GVRP Address, 01-80-C2-00-00-0D, to exchange
GARP PDUs instead of the GVRP Address, 01-80-C2-00-00-21, specified in 802.1Q. Only bridges in the
service provider network use this destination MAC address so these bridges treat GARP PDUs originating
from the customer network as normal data frames, rather than consuming them.
Provider Backbone Bridging through IEEE 802.1ad eliminates the need for tunneling BPDUs with L2PT
and increases the reliability of provider bridge networks as the network core need only learn the MAC
addresses of core switches, as opposed to all MAC addresses received from attached customer devices.
Task Command Syntax Command Mode
Use the Provider Bridge Group address
as the destination MAC address in
BPDUs. The xstp keyword applies this
functionality to STP, RSTP, and MSTP;
this functionality is not available for
PVST+.
bpdu-destination-mac-address
[
stp
|
gvrp
]
provider-bridge-group
CONFIGURATION