iii
Enabling the NQA client ··············································································································································· 82
Configuring the ICMP echo operation ························································································································· 83
Configuring the UDP echo operation
··························································································································· 84
Configuring optional parameters for the NQA operation························································································· 85
Configuring the collaboration function ························································································································ 85
Configuring threshold monitoring································································································································· 86
Threshold types ······················································································································································ 86
Triggered actions··················································································································································· 86
Reaction entry ························································································································································ 86
Configuration procedure ······································································································································ 87
Configuring the NQA statistics collection function ····································································································· 87
Configuring the saving of NQA history records········································································································· 88
Scheduling the NQA operation on the NQA client ··································································································· 88
Displaying and maintaining NQA ······························································································································· 89
NQA configuration examples ······································································································································ 90
ICMP echo operation configuration example ···································································································· 90
UDP echo operation configuration example ······································································································ 91
NQA collaboration configuration example········································································································ 93
Configuring sFlow ······················································································································································ 96
Protocols and standards ················································································································································ 96
sFlow configuration task list ·········································································································································· 96
Configuring the sFlow agent and sFlow collector information ·················································································· 97
Configuring flow sampling············································································································································ 97
Configuring counter sampling ······································································································································ 98
Displaying and maintaining sFlow ······························································································································· 98
sFlow configuration example ········································································································································ 99
Network requirements··········································································································································· 99
Configuration procedure ······································································································································ 99
Verifying the configurations ······························································································································· 100
Troubleshooting sFlow configuration ························································································································· 100
The remote sFlow collector cannot receive sFlow packets ·············································································· 100
Monitoring and maintaining processes ················································································································· 101
Displaying and maintaining processes ······················································································································ 101
Displaying and maintaining user processes·············································································································· 101
Monitoring kernel threads ··········································································································································· 102
Configuring kernel thread deadloop detection ································································································ 102
Configuring kernel thread starvation detection ································································································ 102
Displaying and maintaining kernel threads······································································································ 103
Configuring port mirroring ····································································································································· 104
Overview······································································································································································· 104
Terminology ························································································································································· 104
Port mirroring classification and implementation ····························································································· 105
Configuring local port mirroring ································································································································ 106
Local port mirroring configuration task list ······································································································· 106
Creating a local mirroring group ······················································································································ 106
Configuring source ports for the local mirroring group ·················································································· 107
Configuring the monitor port for the local mirroring group ············································································ 107
Using the remote probe VLAN to enable local port mirroring to support multiple monitor ports ··············· 108
Configuring Layer 2 remote port mirroring ··············································································································· 110
Layer 2 remote port mirroring configuration task list ······················································································ 110
Configuring a remote destination group on the destination device ······························································ 110
Configuring a remote source group on the source device ············································································· 112
Displaying and maintaining port mirroring ··············································································································· 114