ZT8101 Intel (CPU), ZT8101 Datasheet - Page 22

• Manufacturer Part Number: ZT8101
• Manufacturer: Intel (CPU)

Specifications of ZT8101

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Layer 2 Switch Features
4.8.3
4.8.4
4.9
22
Table 4.
Global GVRP Settings
The global GVRP flag determines whether GVRP (Group VLAN Registration Protocol) is enabled
on the switch so that the switch can share VLAN information with other switches, and VLANs can
span multiple switches. When this flag is disabled, VLANs are confined to the physical
connections of the switch. By default, this flag is disabled.
GVRP uses the following settings, and they are not configurable:
Ingress Checking
Ingress checking conditions the forwarding service for an Ethernet port. It has two states:
The following table summarizes the conditions for forwarding tagged frames.
Conditions for Forwarding Tagged Frames
GMRP
GMRP (Group Multicast Registration Protocol) allows ports to dynamically join multicast groups.
It provides a mechanism that allows bridges and end-stations to dynamically register (and
subsequently, de-register) group membership information with the MAC bridge attached to the
same LAN segment. It also provides a mechanism for that information to be disseminated across
all bridges in the bridged LANs that support extended filtering services. The operation of GMRP
relies upon the services provided by GARP (Generic Attribute Registration Protocol).
In Release II, the switch will have a global flag to configure the GMRP protocol status for the
switch, and its default value will be disabled. The global setting will need to be enabled before
individual ports can be enabled. Once enabled, each individual port can be configured to
participate in GMRP or not.
The switch will have the following restrictions on members:
•
•
•
•
•
•
•
Join timer—200 ms
Leave timer—600 ms
Leave all timer—10 seconds
Off: If an Ethernet port is configured with ingress checking off, all incoming tagged frames
are forwarded, even when the receiving port is not a member of the destination VLAN of the
frame.
On: If an Ethernet port is configured with ingress checking on, all incoming tagged frames are
not forwarded. If the VID in the tagged frame belongs to the VLAN ID set, the frame is
forwarded; otherwise the frame is dropped.
The maximum number of static entries will be 32.
The maximum number of dynamic entries will be 64.
Ingress Checking On
Ingress Checking Off
Intel
®
NetStructure
TM
Forward
Forward
Tagged Frame with the VID in
ZT 8101 10/100 Ethernet Switch Technical Product Specification
the VLAN ID Set
Discard
Forward
Tagged Frame with the VID Not
in VLAN ID Set