HP 5900 Configuration Guide

86
DSCP value (decimal) DSCP value (binar
y
) Descri
p
tion
28 011100 af32
30 011110 af33
34 100010 af41
36 100100 af42
38 100110 af43
8 001000 cs1
16 010000 cs2
24 011000 cs3
32 100000 cs4
40 101000 cs5
48 110000 cs6
56 111000 cs7
0 000000 be (default)
802.1p priority
802.1p priority lies in the Layer 2 header and applies to occasions where Layer 3 header analysis is not
needed and QoS must be assured at Layer 2.
Figure 28 An Ethernet frame with an 802.1Q tag header
As shown in Figure 28, the 4-byte 802.1Q tag header consists of the tag protocol identifier (TPID, 2 bytes
in length), whose value is 0x8100, and the tag control information (TCI, 2 bytes in length). Figure 29
sh
ows the format of the 802.1Q tag header. The Priority field in the 802.1Q tag header is called the
"802.1p priority", because its use is defined in IEEE 802.1p. Table 12 sh
ows the values for 802.1p
priority.
Figure 29 802.1Q tag header

HP 5900 Specifications

General

Model	HP 5900
Rack Mountable	Yes
MAC Address Table Size	128K
Jumbo Frame Support	Yes
Routing Protocol	OSPF, BGP, RIP, IS-IS, IGMP
Remote Management Protocol	SNMP, CLI
Features	Quality of Service (QoS), Jumbo Frames support, IPv4 support, IPv6 support
Operating Temperature	0 °C to 45 °C
Operating Humidity	10% to 90% non-condensing
Power Supply	Internal power supply - hot-plug / redundant