Chapter 12 Policy and Static Routes
UAG Series User’s Guide
212
Figure 137 Configuration > Network > Routing > Static Route > Add
The following table describes the labels in this screen.
12.4 Policy Routing Technical Reference
Here is more detailed information about some of the features you can configure in policy routing.
NAT and SNAT
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address in a packet
in one network to a different IP address in another network. Use SNAT (Source NAT) to change the
source IP address in one network to a different IP address in another network.
Assured Forwarding (AF) PHB for DiffServ
Assured Forwarding (AF) behavior is defined in RFC 2597. The AF behavior group defines four AF
classes. Inside each class, packets are given a high, medium or low drop precedence. The drop
Table 91 Configuration > Network > Routing > Static Route > Add
LABEL DESCRIPTION
Destination IP This parameter specifies the IP network address of the final destination. Routing is always
based on network number.
If you need to specify a route to a single host, enter the specific IP address here and use a
subnet mask of 255.255.255.255 (for IPv4) in the Subnet Mask field to force the network
number to be identical to the host ID.
Subnet Mask Enter the IP subnet mask here.
Gateway IP Select the radio button and enter the IP address of the next-hop gateway. The gateway is a
router or switch on the same segment as your UAG's interface(s). The gateway helps
forward packets to their destinations.
Interface Select the radio button and a predefined interface through which the traffic is sent.
Metric Metric represents the “cost” of transmission for routing purposes. IP routing uses hop count
as the measurement of cost, with a minimum of 1 for directly connected networks. Enter a
number that approximates the cost for this link. The number need not be precise, but it
must be 0~127. In practice, 2 or 3 is usually a good number.
OK Click OK to save your changes back to the UAG.
Cancel Click Cancel to exit this screen without saving.
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