ii
Enabling MAC Information globally ··················································································································· 32
Enabling MAC Information on an interface ······································································································· 32
Configuring MAC Information mode ·················································································································· 33
Configuring the interval for sending Syslog or trap messages········································································· 33
Configuring the MAC Information queue length································································································ 33
MAC Information configuration example···················································································································· 33
Ethernet link aggregation configuration···················································································································35
Basic concepts ······················································································································································· 35
Aggregating links in static mode························································································································· 38
Aggregating links in dynamic mode··················································································································· 39
Load sharing criteria for link aggregation groups····························································································· 41
Ethernet link aggregation configuration task list········································································································· 41
Configuring an aggregation group ····························································································································· 41
Configuring a static aggregation group············································································································· 42
Configuring a dynamic aggregation group······································································································· 42
Configuring an aggregate interface ···························································································································· 43
Configuring the description of an aggregate interface····················································································· 43
Enabling link state traps for an aggregate interface························································································· 44
Setting the minimum number of selected ports for an aggregation group······················································ 44
Shutting down an aggregate interface ··············································································································· 45
Restoring the default settings for an aggregate interface ················································································· 45
Configuring load sharing for link aggregation groups······························································································ 45
Enabling local-first load sharing for link aggregation······················································································· 47
Enabling link-aggregation traffic redirection··············································································································· 48
Displaying and maintaining Ethernet link aggregation ····························································································· 48
Ethernet link aggregation configuration examples····································································································· 49
Layer 2 static aggregation configuration example···························································································· 49
Layer 2 dynamic aggregation configuration example······················································································ 51
Port isolation configuration········································································································································54
Configuring the isolation group ··································································································································· 54
Displaying and maintaining isolation groups ············································································································· 55
Port isolation configuration example ··························································································································· 55
MSTP configuration····················································································································································57
Why STP································································································································································· 57
Protocol packets of STP········································································································································· 57
Basic concepts in STP············································································································································ 58
How STP works······················································································································································ 59
Introduction to RSTP ······················································································································································· 64
Introduction to MSTP······················································································································································ 64
Why MSTP ····························································································································································· 64
Basic concepts in MSTP········································································································································ 65
How MSTP works ·················································································································································· 69
Implementation of MSTP on devices···················································································································· 69
Protocols and standards ······································································································································· 70
MSTP configuration task list ·········································································································································· 70
Configuring MSTP·························································································································································· 71
Configuring an MST region ································································································································· 71
Configuring the root bridge or a secondary root bridge·················································································· 72
Configuring the work mode of an MSTP device································································································ 73
Configuring the priority of a device···················································································································· 74
Configuring the maximum hops of an MST region ··························································································· 74
Configuring the network diameter of a switched network················································································ 75
Configuring timers of MSTP ································································································································· 75
Configuring the timeout factor ····························································································································· 76
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