Configuration > Spanning Tree > Stp Bridge Global Settings - D-Link DGS-1210/ME User Manual
Metro ethernet switch series
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4 Configuration
DHCPv6 Relay Status: Specifies whether DHCPv6 Relay is enabled on the device.
Enabled – Enables DHCPv6 Relay on the device.
Disabled – Disables DHCPv6 Relay on the device. This is the default value.
DHCPv6 Relay Hops Count Limit (1-32): The field allows and entry between 1 and 32 to define the
maximum number of router hops DHCPv6 messages can be forwarded. The default hop count is 4.
DHCPv6 Relay Option37 State: Specifies the DHCPv6 Relay Option37 State to be enabled or disabled.
DHCPv6 Relay Option37 Check: Specifies the DHCPv6 Relay Option37 Check to be enabled or disabled.
DHCPv6 Relay Option37 Remote ID Type: Specifies the DHCPv6 Relay Option37 Remote ID type is CID
with User Defined, User Defined or Default.
Interface: Enter a name of the interface.
Server IP: Enter the server IP address.
Click Apply to implement changes made.
Configuration > Spanning Tree > STP Bridge Global Settings
The Switch implements three versions of the Spanning Tree Protocol, the Rapid Spanning Tree Protocol
(RSTP) as defined by the IEEE 802.1w specification and a version compatible with the IEEE 802.1D STP
and Multiple Spanning Tree Protocol (MSTP) as defined by the IEEE802.1 specification. RSTP can operate
with legacy equipment implementing IEEE 802.1D, however the advantages of using RSTP will be lost.
The IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) evolved from the 802.1D STP standard. RSTP was
developed in order to overcome some limitations of STP that impede the function of some recent switching
innovations. The basic function and much of the terminology is the same as STP. Most of the settings
configured for STP are also used for RSTP. This section introduces some new Spanning Tree concepts and
illustrates the main differences between the two protocols.
The IEEE 802.1 Multiple Spanning Tree (MSTP) provides various load balancing scenarios by allowing
multiple VLANs to be mapped to a single spanning tree instance, providing multiple pathways across the
network. For example, while port A is blocked in one STP instance, the same port can be placed in the
Forwarding state in another STP instance.
By default, Rapid Spanning Tree is disabled. If enabled, the Switch will listen for BPDU packets and its
accompanying Hello packet. BPDU packets are sent even if a BPDU packet was not received. Therefore,
each link between bridges is sensitive to the status of the link. Ultimately this difference results in faster
detection of failed links, and thus faster topology adjustment.
By default Multiple Spanning Tree is enabled. It will tag BPDU packets to receiving devices and distinguish
spanning tree instances, spanning tree regions and the VLANs associated with them.
After enabling STP, setting the STP Global Setting includes the following options:
DGS-1210 series Metro Ethernet Managed Switch User Manual
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