layer 2 switching and spanning tree protocol stp

... v2.0—3-7 Spanning- Tree Port States (Cont.) © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-8 Spanning- Tree Path Cost © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-9 Spanning- Tree ... © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3- 12 Rapid Spanning- Tree Protocol © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-13 Rapid Transition to Forwarding © 20 02, ... Spanning- Tree Example © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-10 Spanning- Tree Recalculation © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-11 Spanning- Tree Convergence...

Ngày tải lên: 08/07/2013, 01:27

... Name: SwitchB IP Address: 1 72. 16.1 .20 0 IP Address: 1 72. 16.1 .20 1 Subnet Mask: 25 5 .25 5 .25 5.0 Subnet Mask: 25 5 .25 5 .25 5.0 Default Gateway: 1 72. 16.1.1 Default Gateway: 1 72. 16.1.1 Enable Password: secret ... address 1 72. 16.1 .20 into the switch port labeled "1x" (VLAN 2) Change the IP address of the PC connected to SwitchA port 1x to 1 72. 16 .2. 20, subnet mask 25 5 .25 5 .25 5.0, default gateway 1 72. 16 .2. 100 ... VLANs 1, 2, and in our network The IP subnetting information for this section is as follows: default Engineering marketing 1 72. 16.1.0 /24 1 72. 16 .2. 0 /24 1 72. 16.3.0 /24 Connect one end of a standard...

Ngày tải lên: 19/10/2013, 02:15

... Spanning Tree Terms Digital Equipment Coporation(DEC)在被收购和重命名为 Compaq 的时候,创建了原始的 STP, 之后 IEEE 创建了自己的 STP 叫做 8 02. 1D 版本的 STP. 和之前的 DEC 的 STP 不兼容 .STP 的 主要任务是防止层 的循环 ,STP 使用生成树算法 (spanning- tree ... 种模式对帧的读取程度具体如下: Configuring the Catalyst 1900 and 29 50 Switches 1900 是款低端 switch 产品,分为 19 12 和 1 924 系列:19 12 是有 12 个 10BaseT 端口而 1 924 是 有 24 个 10BaseT 端口 1900 and 29 50 Switch Startup 当 1900 启动后,先运行 POST,此时每个端口的发光二级管(LEDs)是绿色的,当 ... 1 72. 16.10.1 1900(config)# 29 50 下的配置是在 VLAN1 接口下配置,VLAN1 是管理 VLAN,默认所有接口均是 VLAN1 的 成员,配置如下: 29 50(config)#int vlan1 29 50(config-if)#ip address 1 72. 16.10.17 25 5 .25 5 .25 5.0 29 50(config-if)#no shut 29 50(config-if)#exit...

Ngày tải lên: 10/12/2013, 16:15

... v2.0—3-7 Spanning- Tree Port States (Cont.) © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-8 Spanning- Tree Path Cost © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-9 Spanning- Tree ... © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3- 12 Rapid Spanning- Tree Protocol © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-13 Rapid Transition to Forwarding © 20 02, ... Spanning- Tree Example © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-10 Spanning- Tree Recalculation © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—3-11 Spanning- Tree Convergence...

Ngày tải lên: 17/02/2014, 08:20

... trạng thái Thời gian hội tụ không lâu 15s Rapid spanning tree (IEEE 8 02. 1w) thực thay spanning tree (IEEE 8 02. 1d) 13 Rapid Spanning Tree Protocol (RSTP) 14 ... bắt đầu truyền liệu user, học địa MAC xử lí gói BPDU 12 Rapid Spanning Tree Protocol (RSTP) Giao thức Rapid spanning – tree theo chuẩn IEEE 8 02. 1w : Làm rõ vai trò trạng thái port Định nghĩa loại ... instability Spanning tree Lớp trường TTL (Time to Live) Spanning tree : Cho phép tạo cấu trúc luận lý không vòng lặp vòng lặp vật lý TREE TREE : cấu trúc logic hình hình mở rộng Thuật toán Spanning tree...

Ngày tải lên: 04/04/2014, 00:01

... PVST + (cont) 37 RSTP • • • RSTP (IEEE 8 02. 1w) is an evolution of the 8 02. 1D standard RSTP speeds the recalculation of the spanning tree when the Layer network topology changes RSTP can achieve ... between C1 and C2 – Core switch C1 and core switch C2 are Layer switches VLAN 20 and VLAN 30 are no longer bridged between C1 and C2, so there is no possibility for a loop 50 Design STP for Trouble ... converge 38 RSTP (cont) 39 RSTP BPDU • RSTP (8 02. 1w) uses type 2, version BPDUs, so an RSTP bridge can communicate 8 02. 1D on any shared link or with any switch running 8 02. 1D – Protocol information...

Ngày tải lên: 05/07/2014, 03:20

... S2 and S3, since they are the non-root switches S2# 1w2d: S2# 1w2d: state 1w2d: S2# 1w2d: 1w2d: 1w2d: 1w2d: S3# 1w2d: 1w2d: S3# 1w2d: 1w2d: S3# 1w2d: S3# 1w2d: 1w2d: STP: VLAN0001 we are the spanning ... Prio.Nbr - 128 .1 128 .2 128 .6 128 .11 128 .18 Type -P2p P2p P2p P2p P2p S3#show spanning- tree VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 327 69 Address 0019.068d.6980 ... events S1#debug spanning- tree events Spanning Tree event debugging is on S2#debug spanning- tree events Spanning Tree event debugging is on S3#debug spanning- tree events Spanning Tree event debugging...

Ngày tải lên: 05/07/2014, 04:20

... Block redundant link and auto unblock redundant link when primary link down Via Spanning Tree Protocol Học viện mạng Bách Khoa - Website: www.bkacad.com 19 Spanning Tree Protocol p g Học viện ... failure, STP recalculates the paths and unblocks the necessary ports to allow the redundant path to become active active Học viện mạng Bách Khoa - Website: www.bkacad.com 21 Spanning- Tree Protocol ... Spanning- Tree Protocol • • • • Layer protocol STP executes an algorithm called Spanning Tree Algorithm (STA) (STA) STA chooses a reference point, called a root bridge, and then determines the available...

Ngày tải lên: 28/07/2014, 18:21

... Xây dựng ST LAN segment B8 Spanning Tree: B3 B5 B1 root port B7 B2 B2 B4 B5 B1 Root B6 B3 B4 B8 B6 B7 Example Spanning Tree B8 Forwarding Tree: B3 B5 B1 root B7 port B2 B2 B4 B5 B7 B1 Root B8 Designated ... 8 02. 1D Xây dựng spanning tree • Các Bridge chạy thuật toán phân phối spanning tree (STA) • Chọn cổng nào, bridge nên thực chuyển tiếp khung Cổng nào, bridge nên tắt Tổng quan STP • Xây dựng Spanning ... SWITCHED NETWORKS Spanning Tree Protocol (STP) Bridging Loops Vấn đề nảy sinh với vòng Học sai B A,1 A,1 1 A Vấn đề nảy sinh với vòng Lặp khung C 2 C,?? C,?? 1 A Loop-free: tree C B Thông điệp...

Ngày tải lên: 31/10/2014, 22:00

... 10baseT Spanning- Tree Protocol Root Bridge Selection Switch X Default priority 327 68 (8000 hex) MAC 0c0011111111 BPDU Switch Y Default priority 327 68 (8000 hex) MAC 0c0 022 222 222 BPDU = Bridge protocol ... Designated port (F) 10baseT Root port (F) Port Switch Y Default priority 327 68 MAC 0c0 022 222 222 x Nondesignated port (B) Spanning- Tree Protocol Path Cost Link Speed Cost (reratify IEEE spec) Cost (previous ... Mbps 100 100 Spanning- Tree: Switch Z Mac 0c0011110000 Default priority 327 68 Port 100baseT Port Switch X MAC 0c0011111111 Default priority 327 68 Port Port Port Switch Y MAC 0c0 022 222 222 Default...

Ngày tải lên: 12/08/2015, 09:19

... allowed and active in management domain 1,13 ,20 -21 ,23 ,30-31,60, 82, 101-1 02, 123 ,24 0,300,600 Port Po1 Vlans in spanning tree forwarding state and not pruned 1,13 ,20 -21 ,23 ,30-31,60, 82, 101-1 02, 123 ,24 0,300,600 ... address 1 72. 16. 12. 2 25 5 .25 5 .25 5.0 no snmp trap link-status ! interface Ethernet0/0. 123 description to PE3 - VLAN 123 encapsulation dot1Q 123 ip address 1 72. 16. 123 .2 255 .25 5 .25 5.0 PE2-RACK1#sho cdp ... Ethernet0/0 .20 description to RR - VLAN 20 encapsulation dot1Q 20 ip address 1 72. 16 .20 .2 255 .25 5 .25 5.0 ! interface Ethernet0/0 .21 description to PE1 - VLAN 21 encapsulation dot1Q 21 ip address 1 72. 16. 12. 2...

Ngày tải lên: 23/10/2015, 18:08

... states of the first 12 interfaces and ports of each switch Switch A Port # Switch B 10 11 12 2-4 CCNA 3: Switching Basics and Intermediate Routing v 3.0 - Lab 7 .2. 6 Copyright  20 03, Cisco Systems, ... version 12. 1 of the IOS, type just show spanning- tree Different versions of IOS have different options for this command Switch_A#show spanning- tree brief b On Switch_B type show spanning- tree brief ... version 12. 1 of the IOS, type just show spanning- tree Different versions of IOS have different options for this command Switch_A#show spanning- tree brief b On Switch_B type show spanning- tree brief...

Ngày tải lên: 11/12/2013, 14:15

... first 12 interfaces and ports of each switch Switch A Port # Switch B 10 11 2- 4 CCNA 3: Switching Basics and Intermediate Routing v 3.0 - Lab 7 .2. 6 Copyright  20 03, Cisco Systems, Inc  12 Step ... version 12. 1 of the IOS, type just show spanning- tree Different versions of IOS have different options for this command Switch_A#show spanning- tree brief b On Switch_B type show spanning- tree brief ... version 12. 1 of the IOS, type just show spanning- tree Different versions of IOS have different options for this command Switch_A#show spanning- tree brief b On Switch_B type show spanning- tree brief...

Ngày tải lên: 11/12/2013, 14:15

... deleted) 2/ 34 blocking 3019 32 disabled ALSwitch>sh spanning- tree Spanning tree is executing the IEEE compatible Spanning Tree protocol Bridge Identifier has priority 491 52, address 00 02. 4b21.36c0 ... ALSwitch#sh spanning- tree Spanning tree is executing the IEEE compatible Spanning Tree protocol Bridge Identifier has priority 491 52, address 00 02. 4b21.36c0 Configured hello time 2, max age 20 , forward ... ALSwitch#sh spanning- tree Spanning tree is executing the IEEE compatible Spanning Tree protocol Bridge Identifier has priority 100, address 00 02. 4b21.36c0 Configured hello time 2, max age 20 , forward...

Ngày tải lên: 24/01/2014, 19:20

... description 72a to npe 12 – bridged encapsulation dot1q ip address 100.4.1. 12 255 .25 5 .25 5.0 interface fa1/0 .2 description 72a to npe 12 - xconnect encapsulation dot1q ip address 100 .2. 1. 12 255 .25 5 .25 5.0 ... Router(config-if)# ip address 2. 2 .2. 2 25 5 .25 5 .25 5 .25 5 ! CE facing EoMPLS configuration Router# enable Router# configure terminal Router(config)# interface TenGigabitEthernet 1 /2 Router(config-if)# service ... address 100 .2. 1.33 25 5 .25 5 .25 5.0 This is the configuration at NPE14: interface ge1/3.4 description npe14 to npe11 gi3/1 – primary - bridged encapsulation dot1q ip address 100.4.1 .22 25 5 .25 5 .25 5.0 interface...

Ngày tải lên: 25/01/2014, 11:20

... joined: 22 4.0.1.40 22 4 .2. 127 .25 4 BSCI © 20 08 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 19 CCNP – BSCI Bachkhoa Networking Academy Layer Multicast Frame Switching ... CCNP – BSCI Bachkhoa Networking Academy IGMPv2—Leaving a Group (Cont.) Hosts H2 and H3 are members of group 22 4.1.1.1 H2 sends a leave message BSCI © 20 08 Cisco Systems, Inc All rights reserved ... Objectives  Explain the operations of IGMPv2 and how IGMPv2 utilizes Join Group and Leave Group messages  Explain the operations of IGMPv3 and how IGMPv2 and IGMPv3 interoperate  Describe the methods...

Ngày tải lên: 07/07/2014, 00:20

Ngày tải lên: 25/07/2014, 08:20

... Fa0/3 Root FWD 20 0000 128 .3 P2p witchB# 01 :23 :24 : MSTP(0): updt roles 01 :23 :24 : MSTP(0): updt roles 01 :23 :24 : MSTP(0): Fa0 /2 is now root port 01 :23 :25 : %LINEPROTO-5-UPDOWN: Line protocol on Interface ... 128 .2 P2p Fa0/4 Altn BLK 20 0000 128 .4 P2p Fa0/9 Desg FWD 20 0000 128 .9 Edge P2p Cuối dựt port1,4, xem có chuyển qua port để root hay không: SwitchA# 01:19 :29 : MSTP(0): updt roles 01:19 :29 : MSTP(0): ... address 1 92. 168.1 .2 255 .25 5 .25 5.0 ! ip classless ip http server end SwitchB ! hostname SwitchB ! ip subnet-zero ! spanning- tree mode mst spanning- tree extend system-id spanning- tree vlan priority...

Ngày tải lên: 25/07/2014, 08:20

... dịch vụ Hình 6 .2. 2.c Cấu hình tốc độ chế độ song công cho port cho Hình 6 .2. 2.d Mở dịch vụ HTTP chọn port cho dịch vụ switch  428 Hình 6 .2. 2.e Giao diện web switch  429 Hình 6 .2. 2.f Giao diện ... mac-address-table chế độ EXEC đặc quyền Ngay địa MAC người quản trị mạng cấu hình trước bị xóa lệnh Hình 6 .2. 3.b 6 .2. 4 Cấu hình địa MAC cố định Bạn đinh gán địa MAC cố định cho port switch Lý để gán cố định ... dịch vụ switch  428 Hình 6 .2. 2.e Giao diện web switch  429 Hình 6 .2. 2.f Giao diện quản lý web 6 .2. 3 Quản lý địa MAC Switch học địa MAC thiết bị kết nối vào port cách kiểm tra địa nguồn gói liệu...

Ngày tải lên: 08/08/2014, 19:22

Ngày tải lên: 08/11/2012, 14:19