ZyXEL Communications NETATLAS ENTERPRISE -, Руководство пользователя

Страница: 180 / 197

NetAtlas Enterprise Ethernet Switch Manager User’s Guide
Chapter 18 IP Configuration 180
The following table describes the labels in this screen.
18.7 DiffServ
DiffServ is a class of service (CoS) model that marks packets so that they receive specific per-
hop treatment at DiffServ-compliant network devices along the route based on the application
types and traffic flow. Packets are marked with DiffServ Code Points (DSCPs) indicating the
level of service desired. This allows the intermediary DiffServ-compliant network devices to
handle the packets differently depending on the code points without the need to negotiate paths
or remember state information for every flow. In addition, applications do not have to request
a particular service or give advanced notice of where the traffic is going.
You can configure the DSCP to IEEE802.1p mapping to allow the switch to prioritize all
traffic based on the incoming DSCP value according to the DiffServ to IEEE802.1p mapping
table.
The following table shows the default DSCP-to-IEEE802.1P mapping.
Table 97 VRRP Configuration: VRRP Parameters
LABEL DESCRIPTION
Active Select this option to enable this VRRP interface.
Name Enter a descriptive name (up to 32 printable ASCII characters) for identification
purposes.
Network Select an IP domain to which this VRRP entry applies.
Virtual Router ID Select a virtual router number (1 to 7) for which this VRRP entry is created.
You can configure up to seven virtual routers for one network.
Advertisement Interval Specify the number of seconds between Hello message transmissions. The
default is 1 .
Preempt Mode Select this option to activate preempt mode.
Priority Enter a number (between 1 and 254) to set the priority level. The bigger the
number, the higher the priority.
This field is
100 by default.
Uplink Gateway Enter the IP address of the uplink gateway in dotted decimal notation.
The switch checks the link to the uplink gateway.
Primary Virtual IP Enter the IP address of the primary virtual router in dotted decimal notation.
Secondary Virtual IP This field is optional. Enter the IP address of a secondary virtual router in
dotted decimal notation. This field is ignored when you enter 0.0.0.0 .
OK Click OK to apply the changes and close this screen.
Cancel Click Cancel to discard all changes and close this screen.
Table 98 Default DSCP-IEEE802.1p Mapping
DSCP VALUE
0 – 7 8 – 15 16 – 23 24 – 31 32 – 39 40 – 47 48 – 55 56 – 63
IEEE802.1P
0 1 2 3 4 5 6 7