Setting the MTU Value
It is possible to set a specific MTU property value on a link aggregation interface. However, this
value will not be used on one of the aggregated Ethernet interfaces if the individual Ethernet
interface MTU property is set to a value that is lower than the link aggregation MTU. This is true
regardless if the mode is static or negotiated (LACP).
Example 3.20. Link Aggregation
In this example, the Ethernet interfaces If1 and If2 will become part of a single LinkAggregation
object called la_if1_if2. It is assumed that this new object will have the pre-defined IPv4 address
object la_if1_if2_ip assigned to it and this address belongs to the network la_if1_if2_net.
The switch the link is connecting is capable of a link negotiation.
Command-Line Interface
gw-world:/> add Interface LinkAggregation la_if1_if2
Mode=LACP
IP=la_if1_if2_ip
Network=la_if1_if2_net
DistributionAlgorithm=DestinationIP
Web Interface
1. Go to: Network > Interfaces and VPN > Link Aggregation > Add > Link Aggregation
2. Enter the following:
• Name: la_if1_if2
• Distribution Algorithm: DestinationIP
• Mode: LACP
• IP address (IPv4): la_if1_if2_ip
• Network (IPv4): la_if1_if2_net
3. Select If1 from Members and press Include
4. Repeat the previous step to add the If2 interface
5. Click OK
3.4.4. VLAN
Overview
Virtual LAN (VLAN) support in NetDefendOS allows the definition of one or more Virtual LAN
interfaces which are associated with a particular physical interface. These are then considered to
be logical interfaces by NetDefendOS and can be treated like any other interfaces in
NetDefendOS rule sets and routing tables.
Chapter 3: Fundamentals
195
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