了解STP的一些不足之处,以及一些改进的协议,如TRILL(Transparent Interconnection of Lots of Links)和FabricPath等。 Bridge Priority和MAC地址: Bridge Priority是用于选择根桥的参数之一,它与桥的MAC地址一起构成桥ID。 STP端口状态转换: 端口状态的转换包括阻塞到监听、监听到学习、学习到转发等,理解这些状态转换有...
Spanning tree Bridge Assurance is one of those STP features that help to prevent bridging loops in your network. When bridge assurance is enabled, BPDUs are sent on all interfaces of your switch, including blocked interfaces like the alternate or backup port. When an interface doesn’t receive...
如下图所示:在某些情况下,因为运行不同的协议,导致Cisco的spanning-tree生成树计算结果与Juniper的计算结果不一致,Cisco切断了左边端口,而Juniper切断了右边的端口。从而在平滑迁移过程中,Cisco和Juniper互联的临时线路被Spanning-tree完全阻断。 问题分析: 乍看之下,觉得两个完全不同的厂商协议,肯定没法互联互通。但是如...
如下图所示:在某些情况下,因为运行不同的协议,导致Cisco的spanning-tree生成树计算结果与Juniper的计算结果不一致,Cisco切断了左边端口,而Juniper切断了右边的端口。从而在平滑迁移过程中,Cisco和Juniper互联的临时线路被Spanning-tree完全阻断。 问题分析: 乍看之下,觉得两个完全不同的厂商协议,肯定没法互联互通。但是如...
思路很重要!不同厂商Spanning-tree对接案例思考,朋友们是否经历过客户网络设备替换割接,如果被替换的设备和新设备不是一个厂商,往往在割接准备过程中会暴露出很多棘手的问题。例如,设备厂商往往有大量的私有协议,从而导致了在不同厂商设备之间无法正常互联互通。如果
If you have a multiple spanning tree instance (MSTI 0, also known as a common spanning tree, or CST), you can set thetree priorityfor a bridge. The bridge with the lowest priority is elected theroot bridge. The priority must be a number between0and61440,and must be a ...
Device# spanning-tree bridge assurance Enables Bridge Assurance on all network ports on the switch. Bridge Assurance is disabledby default. Use the no version of the command to disable the feature. Disabling Bridge Assurance causes all co...
spanning-tree bpduguard spanning-tree bridge assurance spanning-tree cost spanning-tree etherchannel guard misconfig spanning-tree extend system-id spanning-tree guard spanning-tree link-type spanning-tree loopguard default spanning-tree mode spanning-tree mst spanning-tree mst configuration spanning-tree...
Network Bridge Assurance(次述)を使用する際に使用します。 Nexus Edge blockingやlearning statesを経由せず、すぐにforwarding stateに移行します。 従来のportfastに該当します。 ホスト 設定方法 モード変更 Switch(config)# spanning-tree mode ? mst Multiple spanning tree mode ...
N9K2#show spanning-tree vlan 4008 VLAN4008Spanning tree enabled protocol rstpRoot ID Priority 36776Address 0023.04ee.be65This bridge is the rootHello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 36776 (priority 32768 sys-id-ext 4008)Address 0023.04ee.be65Hello Time 2 ...