Ubiquiti Networks PowerBridgM - Manual (Page 32)

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Chapter 5: Network Tab airOS ™ v5.5.4 User Guide
Ubiquiti Networks, Inc.
Interfaces
(Available in Advanced view.) The Maximum Transmission
Unit (MTU) is the maximum packet size (in bytes) that a
network can transmit. You can configure a different MTU
for each of the interfaces.
Click the + button to display the Interfaces section.
Interface Displays the name of the interface.
MTU The default is 1500.
Action Click Edit to change the MTU. Then click Save to
apply your change.
IP Aliases
(Available in Advanced view.) You can configure IP
aliases for the local and external network interfaces for
management purposes. For example, you may need
multiple IP addresses (one private IP address and one
public IP address) for a single device. If a CPE uses PPPoE,
the CPE obtains a public PPPoE address, but the network
administrator assigns an internal IP alias to the device. This
way the network administrator can manage the device
internally without going through the PPPoE server.
Click the + button to display the IP Aliases section.
Enabled Enables the specific IP alias. All the added IP
aliases are saved in the system configuration file; however,
only the enabled IP aliases are active on the device.
Interface Select the appropriate interface.
IP Address The alternative IP address for the interface.
This can be used for routing or device management
purposes.
Netmask The network address space identifier for the IP
alias.
Comment You can enter a brief description of the
purpose for the IP alias.
Action You have the following options:
• Add Adds a IP alias.
• Edit Make changes to an IP alias. Click Save to save your
changes.
• Del Delete an IP alias.
VLAN Network
(Available in Advanced view.) You can create multiple
Virtual Local Area Networks (VLANs). Click the + button to
display the VLAN Network section.
Enabled Enables the specific VLAN. All the added VLANs
are saved in the system configuration file; however, only
the enabled VLANs are active on the device.
Interface Select the appropriate interface.
VLAN ID The VLAN ID is a unique value assigned to
each VLAN at a single device; every VLAN ID represents a
different VLAN. The VLAN ID range is 2 to 4094.
Comment You can enter a brief description of the
purpose for the VLAN.
Action You have the following options:
• Add Add a VLAN.
• Edit Make changes to a VLAN. Click Save to save your
changes.
• Del Delete a VLAN.
Bridge Network
(Available in Advanced view.) You can create one or
more bridge networks if you need complete Layer 2
transparency. This is similar to using a switch – all traffic
flows through a bridge, in one port and out another
port, regardless of VLANs or IP addresses. For example,
if you want to use the same IP subnet on both sides of a
device, then you create a bridge network. There are many
different scenarios that could require bridged interfaces,
so the Bridge Network section is designed to allow
flexibility.
Click the + button to display the Bridge Network section.
Enabled Enables the specific bridge network. All
the added bridge networks are saved in the system
configuration file; however, only the enabled bridge
networks are active on the device.
Interface The interface is automatically displayed.
STP Multiple interconnected bridges create larger
networks using IEEE 802.1d Spanning Tree Protocol
(STP), which is used for finding the shortest path within a
network and eliminating loops from the topology.