Chapter 10 Interfaces
ZyWALL/USG Series User’s Guide
346
10.11 Trunk Overview
Use trunks for WAN traffic load balancing to increase overall network throughput and reliability.
Load balancing divides traffic loads between multiple interfaces. This allows you to improve quality
of service and maximize bandwidth utilization for multiple ISP links.
Subnet Mask Enter the subnet mask of this interface in dot decimal notation. The subnet mask
indicates what part of the IP address is the same for all computers in the network.
Gateway Enter the IP address of the gateway. The ZyWALL/USG sends packets to the gateway
when it does not know how to route the packet to its destination. The gateway should
be on the same network as the interface.
Metric Enter the priority of the gateway (if any) on this interface. The ZyWALL/USG decides
which gateway to use based on this priority. The lower the number, the higher the
priority. If two or more gateways have the same priority, the ZyWALL/USG uses the one
that was configured first.
Interface
Parameters
Egress
Bandwidth
Enter the maximum amount of traffic, in kilobits per second, the ZyWALL/USG can send
through the interface to the network. Allowed values are 0 - 1048576.
Ingress
Bandwidth
This is reserved for future use.
Enter the maximum amount of traffic, in kilobits per second, the ZyWALL/USG can
receive from the network through the interface. Allowed values are 0 - 1048576.
Connectivity Check These fields appear when you select a vpn-rule.
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 ZyWALL/USG stops routing to the gateway. The
ZyWALL/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 ZyWALL/USG regularly ping the gateway you specify to make
sure it is still available.
Select tcp to have the ZyWALL/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 ZyWALL/USG stops routing through
the gateway.
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.
OK Click OK to save your changes back to the ZyWALL/USG.
Cancel Click Cancel to exit this screen without saving.
Table 122 Configuration > Network > Interface > VTI > Add (continued)
LABEL DESCRIPTION
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