Network Load Control
174
8.4
QoS/Priority
UM Basic Configuration L3P
Release
7.1
12/2011
8.4.4 Management prioritization
To have full access to the management of the device, even in situations of
high network load, the device enables you to prioritize management packets.
In prioritizing management packets (SNMP, Telnet, etc.), the device sends
the management packets with priority information.
On Layer 2 the device modifies the VLAN priority in the VLAN tag.
For this function to be useful, the configuration of the corresponding ports
must permit the sending of packets with a VLAN tag.
On Layer 3 the device modifies the IP-DSCP value.
DSCP value DSCP name Traffic class
(default setting)
0 Best Effort /CS0 2
1-7 2
8CS10
9,11,13,15 0
10,12,14 AF11,AF12,AF13 0
16 CS2 1
17,19,21,23 1
18,20,22 AF21,AF22,AF23 1
24 CS3 3
25,27,29,31 3
26,28,30 AF31,AF32,AF33 3
32 CS4 4
33,35,37,39 4
34,36,38 AF41,AF42,AF43 4
40 CS5 5
41,42,43,44,45,47 5
46 EF 5
48 CS6 6
49-55 6
56 CS7 7
57-63 7
Table 16: Mapping the DSCP values onto the traffic classes
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