74, the STP Security configuration experiment root Guard

1. Root Guard Parsing

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/78/66/wKiom1Z7j2GDyloyAAA90C66iSg126.png "title=" s7.png "alt=" Wkiom1z7j2gdyloyaaa90c66isg126.png "/>

To protect the stability of the spanningtree, root guard configures the root bridge to specify the port or switch to the non-switch port, and when a better BPDU is received on the interface configured with root guard, the interface is blocked into the broken state. When not received more BPDUs are automatically recovered.

2. Configure Root Guard

650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M01/78/67/wKioL1Z7nuKgxdqKAAAbhbhGL6M504.png "style=" float: none; "title=" S1.png "alt=" Wkiol1z7nukgxdqkaaabhbhgl6m504.png "/>

After configuring root guard, we access the S1 observation phenomenon

650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/78/68/wKiom1Z7pYDjuJU2AABX7N8OX9E149.png "title=" s1.png "alt=" Wkiom1z7pydjuju2aabx7n8ox9e149.png "/> We will S1 the priority of higher, analog S4 not receive more bpdus, observe S4 State change

650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/78/67/wKioL1Z7nuLggZyUAAAb-x1JhgE900.png "style=" float: none; "title=" S2.png "alt=" Wkiol1z7nulggzyuaaab-x1jhge900.png "/>

650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M00/78/68/wKioL1Z7poXQdhllAABSF-bIH7Y472.png "title=" s1.png "alt=" Wkiol1z7poxqdhllaabsf-bih7y472.png "/>

This article is from the "Open Source Hall" blog, please be sure to keep this source http://kaiyuandiantang.blog.51cto.com/10699754/1727898

74, the STP Security configuration experiment root Guard