HP 445946-001 User Manual Page 98
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Quality of Service
98
• Class Selector (CS)—This PHB has eight priority classes, with CS7 representing the highest priority,
and CS0 representing the lowest priority, as shown below. CS PHB is described in RFC 2474.
Table 18 Class selector priority classes
Priority Class Selector DSCP
Highest CS7 56
CS6 48
CS5 40
CS4 32
CS3 24
CS2 16
CS1 8
Lowest CS0 0
QoS levels
The following table shows the default service levels provided by the switch, listed from highest to lowest
importance:
Table 19 Default QoS service levels
Service Level Default PHB 802.1p Priority
Critical CS7 7
Network Control CS6 6
Premium EF, CS5 5
Platinum AF41, AF42, AF43, CS4 4
Gold AF31, AF32, AF33, CS3 3
Silver AF21, AF22, AF23, CS2 2
Bronze AF11, AF12, AF13, CS1 1
Using 802.1p priorities to provide QoS
The HP 10GbE switch software provides Quality of Service functions based on the priority bits in a
packet’s VLAN header. (The priority bits are defined by the 802.1p standard within the IEEE 802.1q
VLAN header.) The 802.1p bits, if present in the packet, specify the priority given to packets during
forwarding. Packets with a numerically higher (non-zero) priority are given forwarding preference over
packets with lower priority.
Packets with a priority mapped to a higher Class of Service (COS) and COS queue (COSq) weight are
given forwarding preference over packets with priority mapped to a lower COS and COSq weight. The
scheduling scheme is Weight Round Robin (WRR), with user-configurable weight from 0 to 15 for a
COSq. The switch can be configured with either two or eight output Class of Service queues (COSq).
- HP 10Gb Ethernet BL-c Switch 1
- Contents 3
- Accessing the switch 9
- Additional references 10
- Typographical conventions 10
- Management Network 10
- Connecting through Telnet 11
- Configuring an IP interface 12
- SNMP v1.0 14
- SNMP v3.0 14
- Default configuration 14
- User configuration 15
- View based configurations 16
- Configuring SNMP trap hosts 17
- Secure access to the switch 20
- ○ Retries = 1-3 24
- TACACS+ authentication 25
- Authorization 26
- Accounting 27
- (CLI example) 28
- (BBI example) 29
- Secure Shell and Secure Copy 30
- Logging in to the switch 32
- • Key Exchange—RSA 33
- User access control 34
- Setting up user IDs 35
- Ports and trunking 36
- Port trunk groups 37
- Before you configure trunks 37
- Port trunking example 39
- Configuring LACP 46
- EAPoL Message Exchange 48
- 802.1x port states 49
- Supported RADIUS attributes 50
- Port-based traffic control 51
- Introduction 53
- Overview 53
- PVID numbers 54
- VLAN tagging 55
- VLANs and IP interfaces 58
- VLAN configuration rules 59
- Multiple VLANS with tagging 60
- FDB static entries 66
- Spanning Tree Protocol 68
- Bridge priority 69
- Port priority 69
- Port path cost 69
- Creating a VLAN 70
- Rules for VLAN tagged ports 70
- Multiple Spanning Trees 71
- Port Fast Forwarding 76
- Fast Uplink Convergence 76
- RSTP and MSTP 77
- Port type and link type 78
- RSTP configuration example 78
- MSTP region 80
- MSTP configuration example 81
- Quality of Service 86
- Using ACL filters 87
- • TCP/UDP 88
- Summary of ACL actions 89
- Understanding ACL precedence 89
- Using ACL Groups 90
- ACL Metering and Re-marking 91
- Viewing ACL statistics 91
- ACL configuration examples 92
- Per Hop Behavior 97
- QoS levels 98
- Queuing and scheduling 105
- Basic IP routing 106
- Example of subnet routing 109
- DHCP relay agent 112
- Routing Information Protocol 114
- RIP Features 115
- Multicast 116
- Default 116
- Authentication 116
- RIP configuration example 117
- IGMP Snooping 118
- FastLeave 119
- IGMP Filtering 120
- Static multicast router 121
- OSPF overview 131
- Neighbors and adjacencies 133
- Link-State Database 133
- Shortest Path First Tree 133
- Configurable parameters 134
- Defining areas 135
- Interface cost 136
- Default routes 137
- Virtual links 138
- Router ID 138
- • ABR Load Sharing 140
- • ABR Failover 140
- OSPF configuration examples 141
- − IF 1 142
- − IF 2 142
- Example 2: Virtual links 150
- Other Virtual Link Options 152
- Verifying OSPF configuration 154
- Remote monitoring 155
- RMON group 2—history 158
- History MIB objects 159
- RMON group 3—alarms 161
- RMON group 9—events 165
- High availability 167
- Failure Detection Pair 168
- Configuration guidelines 169
- VRRP overview 173
- VRRP operation 174
- Failover methods 175
- Active-Active configuration 178
- Task 2: Configure Switch B 180
- − IF 3 182
- − IF 4 182
- Troubleshooting tools 191
- Console and Syslog messages 195
- Trace route 195
- Customer support tools 195
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