Chapter 9 Interfaces
USG20(W)-VPN Series User’s Guide
189
9.7 VLAN Interfaces
A Virtual Local Area Network (VLAN) divides a physical network into multiple logical networks. The
standard is defined in IEEE 802.1q.
Interface
Parameters
Egress
Bandwidth
Enter the maximum amount of traffic, in kilobits per second, the USG can send through
the interface to the network. Allowed values are 0 - 1048576. This setting is used in
WAN load balancing and bandwidth management.
Ingress
Bandwidth
This is reserved for future use.
Enter the maximum amount of traffic, in kilobits per second, the USG can receive from
the network through the interface. Allowed values are 0 - 1048576.
MTU Maximum Transmission Unit. Type the maximum size of each data packet, in bytes,
that can move through this interface. If a larger packet arrives, the USG divides it into
smaller fragments. Allowed values are 576 - 1500. Usually, this value is 1500.
Connectivity Check This section is available if you are configuring a GRE tunnel.
The interface can regularly check the connection to the gateway you specified to make
sure it is still available. You specify how often the interface checks the connection, how
long to wait for a response before the attempt is a failure, and how many consecutive
failures are required before the USG stops routing to the gateway. The USG resumes
routing to the gateway the first time the gateway passes the connectivity check.
Enable
Connectivity
Check
Select this to turn on the connection check.
Check Method Select the method that the gateway allows.
Select icmp to have the USG regularly ping the gateway you specify to make sure it is
still available.
Select tcp to have the USG regularly perform a TCP handshake with the gateway you
specify to make sure it is still available.
Check Period Enter the number of seconds between connection check attempts.
Check Timeout Enter the number of seconds to wait for a response before the attempt is a failure.
Check Fail
Tolerance
Enter the number of consecutive failures before the USG stops routing through the
gateway.
Check Default
Gateway
Select this to use the default gateway for the connectivity check.
Check this
address
Select this to specify a domain name or IP address for the connectivity check. Enter
that domain name or IP address in the field next to it.
Check Port This field displays when you set the Check Method to tcp. Specify the port number to
use for a TCP connectivity check.
Related Setting
WAN TRUNK Click this link to go to a screen where you can configure WAN trunk load balancing.
Policy Route Click this link to go to the screen where you can manually configure a policy route to
associate traffic with this interface.
OK Click OK to save your changes back to the USG.
Cancel Click Cancel to exit this screen without saving.
Table 74 Network > Interface > Tunnel > Add/Edit (continued)
LABEL DESCRIPTION
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