Configuring And Managing Ip Interfaces And Services; Mtu Support; Configuring And Managing Ip Interfaces - D-Link DWS-1008 User Manual

DWS-1008 User's Manual

MTU Support

Mobility System Software (MSS) supports standard maximum transmission units (MTUs)
of 1514 bytes for standard Ethernet packets and 1518 bytes for Ethernet packets with an
802.1Q tag. MSS does not support changing of the MTU through software configuration, and
MSS does not do path MTU discovery.
Encapsulation of the packets for tunneling adds an additional 44 bytes to the packet headers,
so MSS does fragment and reassemble the packets if necessary to fit within the supported
MTUs. However, MSS does not support defragmentation except at the receiving end of an
IP tunnel, and only to reassemble fragments created by another D-Link device for tunneling.
If the path MTU between D-Link devices is less than 1448 bytes, a device in the path might
further fragment or drop a tunneled packet. If the packet is further fragmented, the receiving
switch will not be able to reassemble the fragments, and the packet is dropped.
Configuring and Managing IP Interfaces
Many features, including the following, require an IP interface on the Switch:
• Management access through Telnet
IP interfaces are associated with VLANs. At least one VLAN on an Switch must have an
IP interface to provide management access. Optionally, the other VLANs configured on
the switch also can each have an IP interface. Each IP interface must belong to a unique,
nonoverlapping IP subnet.
D-Link Systems, Inc.
Configuring and Managing IP
Interfaces and Services
Configuring and Managing IP Interfaces and Services
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