iv
Configuring Ethernet link aggregation ·················································································································· 105
Overview ······································································································································································· 105
Basic concepts ····················································································································································· 105
Aggregating links in static mode ······················································································································· 108
Aggregating links in dynamic mode ················································································································· 110
Load sharing criteria for link aggregation groups ··························································································· 112
Ethernet link aggregation configuration task list ······································································································· 112
Configuring an aggregation group ··························································································································· 112
Configuration guidelines ···································································································································· 112
Configuring a static aggregation group ··········································································································· 113
Configuring a dynamic aggregation group ····································································································· 115
Configuring an aggregate interface ·························································································································· 116
Configuring the description of an aggregate interface/subinterface ···························································· 117
Configuring the MTU of a Layer 3 aggregate interface/subinterface ·························································· 117
Enabling link state trapping for an aggregate interface ················································································· 118
Limiting the number of Selected ports for an aggregation group ·································································· 118
Shutting down an aggregate interface ············································································································· 119
Restoring the default settings for an aggregate interface ··············································································· 120
Configuring load sharing for link aggregation groups ···························································································· 120
Configuration restrictions and guidelines ········································································································· 121
Configuration procedure ···································································································································· 121
Enabling link-aggregation traffic redirection ············································································································· 121
Enabling link aggregation enhancement in IRF mode ····························································································· 122
Displaying and maintaining Ethernet link aggregation ··························································································· 123
Ethernet link aggregation configuration examples ··································································································· 123
Layer 2 static aggregation configuration example ·························································································· 124
Layer 2 dynamic aggregation configuration example ···················································································· 125
Layer 3 static aggregation configuration example ·························································································· 127
Layer 3 dynamic aggregation configuration example ···················································································· 129
Configuring port isolation ······································································································································· 131
Overview ······································································································································································· 131
Operating mechanism ········································································································································ 131
Community VLAN ················································································································································ 131
Configuration restrictions and guidelines ·················································································································· 132
Port isolation configuration task list ···························································································································· 132
Assigning ports to an isolation group ························································································································ 132
Configuring community VLANs ·································································································································· 133
Displaying and maintaining port isolation ················································································································ 133
Port isolation configuration examples ························································································································ 133
Port isolation without community VLAN configuration example ····································································· 134
Port isolation with community VLAN configuration example ·········································································· 135
Configuring QinQ ··················································································································································· 138
Overview ······································································································································································· 138
Background and benefits ···································································································································· 138
How QinQ works ················································································································································ 138
QinQ frame structure ·········································································································································· 139
Implementations of QinQ ··································································································································· 140
Modifying the TPID in a VLAN tag ···················································································································· 140
QinQ configuration task list ········································································································································ 141
Enabling basic QinQ ··················································································································································· 141
Configuring selective QinQ ········································································································································ 142
Configuring an outer VLAN tagging policy ····································································································· 142
Configuring an inner-outer VLAN 802.1p priority mapping policy ······························································ 143
