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Configuring VLANs
Configuring the PVID for an interface is useful when untagged and tagged
packets will be sent and received on that port and a device connected to the
interface does not support VLAN tagging.
GVRP
The GARP VLAN Registration Protocol (GVRP) helps to dynamically
manage VLAN memberships on trunk ports. When GARP is enabled,
switches can dynamically register (and de-register) VLAN membership
information with other switches attached to the same segment.
Information about the active VLANs is propagated across all networking
switches in the bridged LAN that support GVRP. You can configure ports to
forbid dynamic VLAN assignment through GVRP.
The operation of GVRP relies upon the services provided by the Generic
Attribute Registration Protocol (GARP). GVRP can create up to 1024 VLANs.
For information about GARP timers, see "What Are GARP and GMRP?" on
page 708.
Double-VLAN Tagging
For trunk ports, which are ports that connect one switch to another switch,
the PowerConnect 7000 Series switches support double-VLAN tagging. This
feature allows service providers to create Virtual Metropolitan Area Networks
(VMANs). With double-VLAN tagging, service providers can pass VLAN
traffic from one customer domain to another through a metro core in a
simple and cost-effective manner. By using an additional tag on the traffic,
the switch can differentiate between customers in the MAN while preserving
an individual customer’s VLAN identification when the traffic enters the
customer’s 802.1Q domain.
With the introduction of this second tag, customers are no longer required to
divide the 4-byte VLAN ID space to send traffic on a Ethernet-based MAN.
In short, every frame that is transmitted from an interface has a double-VLAN
tag attached, while every packet that is received from an interface has a tag
removed (if one or more tags are present).
In Figure 21-2, two customers share the same metro core. The service
provider assigns each customer a unique ID so that the provider can
distinguish between the two customers and apply different rules to each.
When the configurable EtherType is assigned to something different than the
Summary of Contents for PowerConnect 7024
Page 134: ...134 Setting Basic Network Information ...
Page 290: ...290 Managing General System Settings Figure 11 14 SNTP Servers Table ...
Page 348: ...348 Configuring SNMP ...
Page 430: ...430 Monitoring Switch Traffic ...
Page 444: ...444 Configuring iSCSI Optimization ...
Page 538: ...538 Configuring 802 1X and Port Based Security ...
Page 594: ...594 Configuring VLANs Figure 21 16 GVRP Port Parameters Table ...
Page 600: ...600 Configuring VLANs Figure 21 23 Double VLAN Port Parameter Table ...
Page 658: ...658 Configuring the Spanning Tree Protocol ...
Page 693: ...Configuring Port Based Traffic Control 693 Figure 24 3 Storm Control 5 Click Apply ...
Page 780: ...780 Configuring Connectivity Fault Management ...
Page 804: ...804 Snooping and Inspecting Traffic Figure 27 17 DAI Interface Configuration Summary ...
Page 818: ...818 Snooping and Inspecting Traffic ...
Page 836: ...836 Configuring Link Aggregation ...
Page 882: ...882 Configuring DHCP Server Settings ...
Page 916: ...916 Configuring L2 and L3 Relay Features Figure 33 3 DHCP Relay Interface Summary ...
Page 924: ...924 Configuring L2 and L3 Relay Features Figure 33 12 IP Helper Statistics ...
Page 930: ...930 Configuring L2 and L3 Relay Features ...
Page 1004: ...1004 Configuring OSPF and OSPFv3 ...
Page 1044: ...1044 Configuring VRRP ...
Page 1057: ...Configuring IPv6 Routing 1057 Figure 37 9 IPv6 Route Preferences ...
Page 1064: ...1064 Configuring IPv6 Routing ...
Page 1084: ...1084 Configuring DHCPv6 Server and Relay Settings ...
Page 1091: ...Configuring Differentiated Services 1091 Figure 39 5 DiffServ Class Criteria ...
Page 1114: ...1114 Configuring Differentiated Services ...
Page 1130: ...1130 Configuring Class of Service ...
Page 1136: ...1136 Configuring Auto VoIP ...
Page 1216: ...1216 Managing IPv4 and IPv6 Multicast ...