Configuring the MAC Information queue length································································································ 24
MAC Information configuration example···················································································································· 25
Ethernet link aggregation configuration···················································································································26
Overview········································································································································································· 26
Basic concepts ······················································································································································· 26
Aggregating links in static mode························································································································· 29
Aggregating links in dynamic mode ··················································································································· 30
Load-sharing criteria for link aggregation groups ····························································································· 32
Ethernet link aggregation configuration task list········································································································· 32
Configuring an aggregation group ····························································································································· 32
Configuration guidelines ······································································································································ 32
Configuring a static aggregation group············································································································· 33
Configuring a dynamic aggregation group ······································································································· 33
Configuring an aggregate interface ···························································································································· 34
Configuring the description of an aggregate interface····················································································· 35
Enabling link state traps for an aggregate interface ························································································· 35
Setting the minimum number of Selected ports for an aggregation group ····················································· 35
Shutting down an aggregate interface ··············································································································· 36
Restoring the default settings for an aggregate interface ················································································· 36
Configuring load sharing for link aggregation groups······························································································ 37
Configuring load-sharing criteria for link aggregation groups ········································································ 37
Displaying and maintaining Ethernet link aggregation ····························································································· 38
Ethernet link aggregation configuration examples····································································································· 38
Layer 2 static aggregation configuration example···························································································· 38
Layer 2 dynamic aggregation configuration example······················································································ 40
Port isolation configuration········································································································································43
Introduction to port isolation ········································································································································· 43
Configuring the isolation group···································································································································· 43
Displaying and maintaining isolation groups ············································································································· 44
Port isolation configuration example···························································································································· 44
MSTP configuration····················································································································································46
Introduction to STP ························································································································································· 46
Why STP································································································································································· 46
Protocol packets of STP········································································································································· 46
Basic concepts in STP············································································································································ 47
How STP works······················································································································································ 48
Introduction to RSTP ······················································································································································· 53
Introduction to MSTP······················································································································································ 54
Why MSTP ····························································································································································· 54
Basic concepts in MSTP ········································································································································ 55
How MSTP works ·················································································································································· 58
Implementation of MSTP on devices···················································································································· 59
Protocols and standards ······································································································································· 59
MSTP configuration task list ·········································································································································· 59
Configuring MSTP·························································································································································· 61
Configuring an MST region ································································································································· 61
Configuring the root bridge or a secondary root bridge·················································································· 62
Configuring the work mode of an MSTP device································································································ 63
Configuring the priority of a device···················································································································· 63
Configuring the maximum hops of an MST region ··························································································· 63
Configuring the network diameter of a switched network················································································ 64
Configuring timers of MSTP·································································································································· 64
Configuring the timeout factor ····························································································································· 66
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