ii
Configuring priority mapping ··································································································································· 31
Overview ········································································································································································· 31
Introduction to priority mapping ·························································································································· 31
Introduction to priorities ········································································································································ 31
Priority mapping tables ········································································································································· 31
Priority mapping configuration tasks ··························································································································· 32
Configuring priority mapping ······································································································································· 32
Configuring a priority mapping table ················································································································· 32
Configuring a port to trust packet priority for priority mapping ······································································ 34
Changing the port priority of an interface ·········································································································· 35
Configuring primap ··············································································································································· 35
Displaying and maintaining priority mapping ············································································································ 37
Priority mapping configuration example ····················································································································· 37
Network requirements ··········································································································································· 37
Configuration procedure ······································································································································ 38
Configuring traffic policing and traffic shaping ······································································································ 39
Overview ········································································································································································· 39
Traffic evaluation and token buckets ··················································································································· 39
Traffic policing ······················································································································································· 40
Traffic shaping ······················································································································································· 41
Configuring traffic policing ··········································································································································· 42
Configuring GTS ···························································································································································· 42
Displaying and maintaining traffic policing and GTS ······························································································· 43
Configuring hardware congestion management ····································································································· 44
Overview ········································································································································································· 44
Causes, impacts, and countermeasures ·············································································································· 44
Congestion management techniques ·················································································································· 44
Hardware congestion management configuration approaches ··············································································· 47
Configuring per-queue hardware congestion management ······················································································ 48
Configuring SP queuing ········································································································································ 48
Configuring WFQ queuing ·································································································································· 48
Configuring hardware congestion management with queue scheduling profiles ··················································· 50
Introduction to queue scheduling profile ············································································································· 50
Configuring a queue scheduling profile ············································································································· 50
Displaying and maintaining queue scheduling profiles ···················································································· 51
Queue scheduling profile configuration example ······························································································ 51
Configuring congestion avoidance ··························································································································· 53
Overview ········································································································································································· 53
Configuring WRED on an interface ····························································································································· 53
Configuration procedure ······································································································································ 53
Configuration example ········································································································································· 54
Displaying and maintaining WRED ····························································································································· 54
Configuring traffic filtering ········································································································································ 55
Configuration procedure ··············································································································································· 55
Traffic filtering configuration restrictions ······················································································································ 56
Traffic filtering configuration example ························································································································· 56
Network requirements ··········································································································································· 56
Configuration procedure ······································································································································ 57
Configuring protocol packet rate limiting ················································································································ 58
Overview ········································································································································································· 58
Configuration procedure ··············································································································································· 58
