Chapter 12 Policy and Static Routes
UAG5100 User’s Guide
175
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
precedence determines the probability that routers in the network will drop packets when
congestion occurs. If congestion occurs between classes, the traffic in the higher class (smaller
numbered class) is generally given priority. Combining the classes and drop precedence produces
the following twelve DSCP encodings from AF11 through AF43. The decimal equivalent is listed in
brackets.
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.
Table 76
Configuration > Network > Routing > Static Route > Add/Edit (continued)
LABEL
DESCRIPTION
Table 77
Assured Forwarding (AF) Behavior Group
CLASS 1
CLASS 2
CLASS 3
CLASS 4
Low Drop Precedence
AF11 (10)
AF21 (18)
AF31 (26)
AF41 (34)
Medium Drop Precedence
AF12 (12)
AF22 (20)
AF32 (28)
AF42 (36)
High Drop Precedence
AF13 (14)
AF23 (22)
AF33 (30)
AF43 (38)
Содержание UAG5100
Страница 42: ...Chapter 3 Printer Deployment UAG5100 User s Guide 42 ...
Страница 124: ...Chapter 10 Interfaces UAG5100 User s Guide 124 Figure 82 Configuration Network Interface Ethernet Edit External Type ...
Страница 125: ...Chapter 10 Interfaces UAG5100 User s Guide 125 Figure 83 Configuration Network Interface Ethernet Edit Internal Type ...
Страница 135: ...Chapter 10 Interfaces UAG5100 User s Guide 135 Figure 88 Configuration Network Interface PPP Add ...
Страница 213: ...Chapter 20 UPnP UAG5100 User s Guide 213 Figure 139 Network Connections My Network Places Properties Example ...
Страница 227: ...Chapter 24 Web Authentication UAG5100 User s Guide 227 Figure 152 Configuration Web Authentication Web Portal ...
Страница 228: ...Chapter 24 Web Authentication UAG5100 User s Guide 228 Figure 153 Configuration Web Authentication User Agreement ...
Страница 273: ...Chapter 26 Billing UAG5100 User s Guide 273 Figure 190 Configuration Billing Payment Service Custom Service ...
Страница 292: ...Chapter 30 IPSec VPN UAG5100 User s Guide 292 Figure 201 Configuration VPN IPSec VPN VPN Connection Add Edit ...
Страница 298: ...Chapter 30 IPSec VPN UAG5100 User s Guide 298 Figure 203 Configuration VPN IPSec VPN VPN Gateway Add Edit ...
Страница 314: ...Chapter 30 IPSec VPN UAG5100 User s Guide 314 ...
Страница 387: ...Chapter 39 Certificates UAG5100 User s Guide 387 Figure 256 Configuration Object Certificate Trusted Certificates Edit ...
Страница 436: ...Chapter 42 Log and Report UAG5100 User s Guide 436 Figure 302 Configuration Log Report Email Daily Report ...
Страница 440: ...Chapter 42 Log and Report UAG5100 User s Guide 440 Figure 304 Configuration Log Report Log Settings Edit System Log ...
Страница 445: ...Chapter 42 Log and Report UAG5100 User s Guide 445 Figure 306 Configuration Log Report Log Settings Edit Remote Server ...
Страница 491: ...Appendix A Legal Information UAG5100 User s Guide 491 Environmental Product Declaration ...