H3C S5120-SI series Configuration Manual

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H3C S5120-SI series Configuration Manual Manual pdf 8 page image

iiConfiguring a dynamic aggregation group ······································································································· 31Configuring an aggregate interface ···························································································································· 32Configuring the description of an aggregate interface ····················································································· 33Enabling link state traps for an aggregate interface ························································································· 33Shutting down an aggregate interface ··············································································································· 33Configuring load sharing for link aggregation groups ······························································································ 34Configuring load sharing criteria for link aggregation groups ········································································ 34Enabling local-first load sharing for link aggregation ······················································································· 35Enabling link-aggregation traffic redirection ··············································································································· 35Displaying and maintaining Ethernet link aggregation ····························································································· 36Ethernet link aggregation configuration examples ····································································································· 37Layer 2 static aggregation configuration example ···························································································· 37Layer 2 dynamic aggregation configuration example ······················································································ 39Port isolation configuration ········································································································································ 42Introduction to port isolation ········································································································································· 42Configuring an isolation group ···································································································································· 42Displaying and maintaining isolation groups ············································································································· 43Port isolation configuration example···························································································································· 43Spanning tree configuration ······································································································································ 45STP ··················································································································································································· 45STP protocol packets ············································································································································· 45Basic concepts in STP············································································································································ 46Calculation process of the STP algorithm ··········································································································· 47RSTP ················································································································································································· 53PVST················································································································································································· 53MSTP················································································································································································ 53STP, RSTP, and PVST limitations ·························································································································· 53MSTP features ························································································································································ 54MSTP basic concepts ············································································································································ 54How MSTP works ·················································································································································· 58Implementation of MSTP on devices···················································································································· 58Protocols and standards ················································································································································ 58Spanning tree configuration task lists ·························································································································· 59STP configuration task list ····································································································································· 59RSTP configuration task list ··································································································································· 60PVST configuration task list··································································································································· 61MSTP configuration task list ································································································································· 62Configuring the spanning tree ······································································································································ 63Setting the spanning tree mode ··························································································································· 63Configuring an MST region ································································································································· 64Configuring the root bridge or a secondary root bridge ·················································································· 65Configuring the device priority ···························································································································· 66Configuring the maximum hops of an MST region ··························································································· 67Configuring the network diameter of a switched network ················································································ 67Configuring spanning tree timers ························································································································ 67Configuring the timeout factor ····························································································································· 69Configuring the maximum port rate ···················································································································· 69Configuring edge ports········································································································································· 70Configuring path costs of ports ···························································································································· 71Configuring the port priority ································································································································ 73Configuring the port link type ······························································································································ 74Configuring the mode a port uses to recognize/send MSTP packets ····························································· 74Enabling the output of port state transition information ···················································································· 75