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[Tutorial] Các bước thay thế switch trong một hệ thống

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  • [Tutorial] Các bước thay thế switch trong một hệ thống

    Các bước thay thế switch trong một hệ thống
    • Kiểm tra cấu hình hiện có rồi viết lại các yêu cầu kỹ thuật, hiện trạng kỹ thuật.
    • Cấu hình trước (offline) thiết bị 3750G sao cho cấu hình đáp ứng các yêu cầu bên trên.
    • Một số lỗi khi thay thế có thể gặp với dòng switch 3750: MTU trong OSPF, Vlan database, DHCP Snooping
    • Nếu việc thay thế không thành công, chuyển lại switch cũ
    • Thông báo dự kiến thời gian thực hiện
    • Tiến hành thay thế
    • Ghi chép cấu hình, sao lưu cấu hình
    • Thông báo kết thúc ticket.

    Click image for larger version

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    Bước 1:
    Cấu hình mới switch 3750G

    service timestamps debug uptime
    service timestamps log uptime
    no service password-encryption
    hostname DISTRIBUTION
    no aaa new-model
    clock timezone GMT 7
    ip subnet-zero
    ip routing
    ip domain-name vnpro.vn

    ip dhcp excluded-address 10.215.1.1 10.215.1.10
    ip dhcp excluded-address 10.215.11.1 10.215.11.10
    ip dhcp excluded-address 10.215.13.1 10.215.13.10
    ip dhcp excluded-address 10.215.14.1 10.215.14.10
    ip dhcp excluded-address 10.215.15.1 10.215.15.10
    ip dhcp excluded-address 10.215.22.1 10.215.22.10
    ip dhcp excluded-address 10.215.23.1 10.215.23.10
    ip dhcp excluded-address 10.215.24.1 10.215.24.10
    ip dhcp excluded-address 10.215.25.1 10.215.25.10
    ip dhcp excluded-address 10.215.20.1 10.215.20.10

    ip dhcp pool P25
    network 10.215.25.0 255.255.255.0
    default-router 10.215.25.1
    dns-server 192.168.4.6 8.8.8.8
    exit
    ip dhcp pool IE&01
    network 10.215.1.0 255.255.255.0
    default-router 10.215.1.1
    dns-server 192.168.4.6 8.8.8.8
    exit
    ip dhcp pool P11
    network 10.215.11.0 255.255.255.0
    dns-server 192.168.4.6
    default-router 10.215.11.1
    exit
    ip dhcp pool P13
    network 10.215.13.0 255.255.255.0
    dns-server 192.168.4.6 8.8.8.8
    default-router 10.215.13.1
    exit
    ip dhcp pool P14
    network 10.215.14.0 255.255.255.0
    dns-server 192.168.4.6 8.8.8.8
    default-router 10.215.14.1
    exit
    ip dhcp pool P15
    network 10.215.15.0 255.255.255.0
    default-router 10.215.15.1
    dns-server 192.168.4.6 8.8.8.8
    exit
    ip dhcp pool P22
    network 10.215.22.0 255.255.255.0
    dns-server 192.168.4.6 8.8.8.8
    default-router 10.215.22.1
    exit
    ip dhcp pool P23
    network 10.215.23.0 255.255.255.0
    default-router 10.215.23.1
    dns-server 192.168.4.6 8.8.8.8
    exit
    ip dhcp pool P24
    network 10.215.24.0 255.255.255.0
    dns-server 192.168.4.6 8.8.8.8
    default-router 10.215.24.1
    exit
    ip dhcp pool Wireless-Hv
    network 10.215.20.0 255.255.255.0
    default-router 10.215.20.1
    dns-server 192.168.4.6 8.8.8.8
    exit

    spanning-tree mode pvst
    spanning-tree extend system-id

    interface range g4/0/1 – 2
    shutdown
    no switchport
    channel-group 1 mode on
    exit
    interface Port-channel1
    no switchport
    ip address 10.215.215.2 255.255.255.0
    ip ospf priority 0
    exit
    interface range g4/0/1 – 2
    no shutdown
    exit

    interface g4/0/3
    no switchport
    ip address 10.215.1.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/4
    no switchport
    no ip address
    no shutdown
    exit
    interface G4/0/5
    no switchport
    no ip address
    no shutdown
    exit
    interface G4/0/6
    no switchport
    ip address 10.215.11.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/7
    no switchport
    ip address 10.215.13.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/8
    no switchport
    no ip address
    no shutdown
    exit
    interface G4/0/9
    no switchport
    ip address 10.215.14.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/10
    no switchport
    no ip address
    no shutdown
    exit
    interface G4/0/11
    no switchport
    ip address 10.215.15.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/12
    no switchport
    no ip address
    no shutdown
    exit
    interface G4/0/13
    no switchport
    ip address 10.215.22.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/14
    no switchport
    no ip address
    no shutdown
    exit
    interface G4/0/15
    no switchport
    ip address 10.215.23.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/16
    no switchport
    no ip address
    no shutdown
    exit
    interface G4/0/17
    no switchport
    ip address 10.215.24.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/18
    no switchport
    no ip address
    no shutdown
    exit
    interface G4/0/19
    no switchport
    ip address 10.215.25.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/20
    no switchport
    ip address 10.215.20.1 255.255.255.0
    no shutdown
    exit
    interface G4/0/21
    switchport mode access
    spanning-tree portfast
    no shutdown
    exit
    interface G4/0/22
    switchport mode access
    spanning-tree portfast
    no shutdown
    exit
    interface G4/0/23
    switchport mode access
    spanning-tree portfast
    no shutdown
    exit
    interface G4/0/24
    no switchport
    ip address 10.215.26.1 255.255.255.0
    no shutdown
    exit

    interface Vlan1
    no ip address
    shutdown
    exit

    router ospf 1
    router-id 4.4.4.4
    log-adjacency-changes
    area 1 stub
    passive-interface default
    no passive-interface Port-channel1
    network 10.215.0.0 0.0.255.255 area 1
    network 192.168.7.0 0.0.0.255 area 1
    exit

    access-list 10 permit 192.168.3.0 0.0.0.255
    access-list 10 permit 192.168.4.0 0.0.0.255

    ! ntp clock-period 17180382
    ntp server 192.168.5.1
    ip ssh version 2
    crypto key generate rsa

    line vty 0 15
    access-class 10 in
    exec-timeout 15 0
    login local
    transport input ssh
    exit


    Bước 2: Đấu nối cable từ thiết bị cũ sang thiết bị mới tương ứng theo các port.

    Bước 3:
    So sánh thông tin hiển thị cũ trên mới switch 3750G có giống với nội dung hiển thị bên dưới hay không

    DISTRIBUTION#sh ip int br

    Interface IP-Address OK? Method Status Protocol
    Vlan1 unassigned YES NVRAM administratively down down
    FastEthernet0/1 unassigned YES NVRAM up up
    FastEthernet0/2 unassigned YES NVRAM up up
    FastEthernet0/3 10.215.1.1 YES NVRAM up up
    FastEthernet0/4 unassigned YES NVRAM down down
    FastEthernet0/5 unassigned YES NVRAM down down
    FastEthernet0/6 10.215.11.1 YES NVRAM up up
    FastEthernet0/7 10.215.13.1 YES NVRAM up up
    FastEthernet0/8 unassigned YES NVRAM down down
    FastEthernet0/9 10.215.14.1 YES NVRAM up up
    FastEthernet0/10 unassigned YES NVRAM down down
    FastEthernet0/11 10.215.15.1 YES NVRAM up up
    FastEthernet0/12 unassigned YES NVRAM down down
    FastEthernet0/13 10.215.22.1 YES NVRAM up up
    FastEthernet0/14 unassigned YES NVRAM down down
    FastEthernet0/15 10.215.23.1 YES NVRAM up up
    FastEthernet0/16 unassigned YES NVRAM down down
    FastEthernet0/17 10.215.24.1 YES NVRAM up up
    FastEthernet0/18 unassigned YES NVRAM down down
    FastEthernet0/19 10.215.25.1 YES NVRAM up up
    FastEthernet0/20 10.215.20.1 YES NVRAM down down
    FastEthernet0/21 unassigned YES unset down down
    FastEthernet0/22 unassigned YES unset down down
    FastEthernet0/23 unassigned YES unset down down
    FastEthernet0/24 10.215.26.1 YES NVRAM up up
    GigabitEthernet0/1 unassigned YES unset down down
    GigabitEthernet0/2 unassigned YES unset down down
    Port-channel1 10.215.215.2 YES NVRAM up up

    DISTRIBUTION#


    DISTRIBUTION# sh vlan

    VLAN Name Status Ports
    ---- -------------------------------- --------- -------------------------------
    1 default active Fa0/21, Fa0/22, Fa0/23, Gi0/1, Gi0/2
    1002 fddi-default act/unsup
    1003 token-ring-default act/unsup
    1004 fddinet-default act/unsup
    1005 trnet-default act/unsup

    VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
    ---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
    1 enet 100001 1500 - - - - - 0 0
    1002 fddi 101002 1500 - - - - - 0 0
    1003 tr 101003 1500 - - - - - 0 0
    1004 fdnet 101004 1500 - - - ieee - 0 0
    1005 trnet 101005 1500 - - - ibm - 0 0

    Remote SPAN VLANs
    ------------------------------------------------------------------------------


    Primary Secondary Type Ports
    ------- --------- ----------------- ------------------------------------------



    DISTRIBUTION#


    DISTRIBUTION#sh ip route
    Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
    D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
    N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
    E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
    i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
    ia - IS-IS inter area, * - candidate default, U - per-user static route
    o - ODR, P - periodic downloaded static route

    Gateway of last resort is 10.215.215.1 to network 0.0.0.0

    10.0.0.0/24 is subnetted, 11 subnets
    C 10.215.215.0 is directly connected, Port-channel1
    C 10.215.25.0 is directly connected, FastEthernet0/19
    C 10.215.24.0 is directly connected, FastEthernet0/17
    C 10.215.26.0 is directly connected, FastEthernet0/24
    C 10.215.23.0 is directly connected, FastEthernet0/15
    C 10.215.22.0 is directly connected, FastEthernet0/13
    C 10.215.13.0 is directly connected, FastEthernet0/7
    C 10.215.15.0 is directly connected, FastEthernet0/11
    C 10.215.14.0 is directly connected, FastEthernet0/9
    C 10.215.11.0 is directly connected, FastEthernet0/6
    C 10.215.1.0 is directly connected, FastEthernet0/3
    O*IA 0.0.0.0/0 [110/2] via 10.215.215.1, 02:09:50, Port-channel1
    DISTRIBUTION#


    DISRIBUTION#sh cdp nei detail
    -------------------------
    Device ID: SW-VUE-PRO.vnpro.org
    Entry address(es):
    IP address: 192.168.2.254
    Platform: cisco WS-C2950-24, Capabilities: Switch IGMP
    Interface: FastEthernet0/3, Port ID (outgoing port): FastEthernet0/10
    Holdtime : 158 sec

    Version :
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA2, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2004 by cisco Systems, Inc.
    Compiled Sun 07-Nov-04 23:14 by antonino

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF0000000000000013C429 3A40FF0000
    VTP Management Domain: 'ONT'
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 192.168.2.254

    -------------------------
    Device ID: sw15
    Entry address(es):
    IP address: 10.215.15.11
    Platform: cisco WS-C2960-24TT-L, Capabilities: Switch IGMP
    Interface: FastEthernet0/11, Port ID (outgoing port): FastEthernet0/24
    Holdtime : 139 sec

    Version :
    Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2007 by Cisco Systems, Inc.
    Compiled Thu 19-Jul-07 20:06 by nachen

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF000000000000002652D0 3800FF0000
    VTP Management Domain: ''
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 10.215.15.11

    -------------------------
    Device ID: sw13
    Entry address(es):
    Platform: cisco WS-C2960-24TT-L, Capabilities: Switch IGMP
    Interface: FastEthernet0/7, Port ID (outgoing port): FastEthernet0/23
    Holdtime : 140 sec

    Version :
    Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2007 by Cisco Systems, Inc.
    Compiled Thu 19-Jul-07 20:06 by nachen

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF0000000000000024F7A1 BC80FF0000
    VTP Management Domain: ''
    Native VLAN: 13
    Duplex: full
    Management address(es):

    -------------------------
    Device ID: SW-Staff-Tang2.vnpro.vn
    Entry address(es):
    IP address: 192.168.3.21
    Platform: cisco WS-C3750G-24T, Capabilities: Switch IGMP
    Interface: FastEthernet0/24, Port ID (outgoing port): GigabitEthernet3/0/24
    Holdtime : 165 sec

    Version :
    Cisco IOS Software, C3750 Software (C3750-IPSERVICESK9-M), Version 12.2(55)SE6, RELEASE SOFTWARE (fc1)
    Technical Support: http://www.cisco.com/techsupport
    Copyright (c) 1986-2012 by Cisco Systems, Inc.
    Compiled Mon 23-Jul-12 13:22 by prod_rel_team

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF000000000000F4ACC11F 3900FF0000
    VTP Management Domain: ''
    Native VLAN: 26
    Duplex: full
    Management address(es):
    IP address: 192.168.3.21

    -------------------------
    Device ID: Switch
    Entry address(es):
    IP address: 10.215.23.12
    Platform: cisco WS-C2950-24, Capabilities: Switch IGMP
    Interface: FastEthernet0/15, Port ID (outgoing port): FastEthernet0/24
    Holdtime : 129 sec

    Version :
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA8a, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2006 by cisco Systems, Inc.
    Compiled Fri 28-Jul-06 17:00 by weiliu

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010231FF000000000000000C28A5 B580FF0000
    VTP Management Domain: 'ONT'
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 10.215.23.12

    -------------------------
    Device ID: Switch
    Entry address(es):
    IP address: 10.215.22.11
    Platform: cisco WS-C2950-24, Capabilities: Switch IGMP
    Interface: FastEthernet0/13, Port ID (outgoing port): FastEthernet0/24
    Holdtime : 124 sec

    Version :
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA2, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2004 by cisco Systems, Inc.
    Compiled Sun 07-Nov-04 23:14 by antonino

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010231FF000000000000000F239D C640FF0000
    VTP Management Domain: 'ONT'
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 10.215.22.11

    -------------------------
    Device ID: Switch
    Entry address(es):
    Platform: cisco WS-C2950-24, Capabilities: Switch IGMP
    Interface: FastEthernet0/6, Port ID (outgoing port): FastEthernet0/1
    Holdtime : 164 sec

    Version :
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA8a, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2006 by cisco Systems, Inc.
    Compiled Fri 28-Jul-06 17:00 by weiliu

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010231FF000000000000000C28A8 0240FF0000
    VTP Management Domain: 'ONT'
    Native VLAN: 1
    Duplex: full
    Management address(es):

    -------------------------
    Device ID: Switch
    Entry address(es):
    IP address: 10.215.14.11
    Platform: cisco WS-C2960-24TT-L, Capabilities: Switch IGMP
    Interface: FastEthernet0/9, Port ID (outgoing port): FastEthernet0/24
    Holdtime : 139 sec

    Version :
    Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2007 by Cisco Systems, Inc.
    Compiled Thu 19-Jul-07 20:06 by nachen

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010231FF000000000000002652F9 3580FF0000
    VTP Management Domain: ''
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 10.215.14.11

    -------------------------
    Device ID: CORE_SWITCH
    Entry address(es):
    IP address: 10.215.215.1
    Platform: cisco WS-C3560V2-24TS, Capabilities: Router Switch IGMP
    Interface: FastEthernet0/2, Port ID (outgoing port): FastEthernet0/2
    Holdtime : 136 sec

    Version :
    Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(50)SE1, RELEASE SOFTWARE (fc2)
    Copyright (c) 1986-2009 by Cisco Systems, Inc.
    Compiled Mon 06-Apr-09 08:00 by amvarma

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF01022501000000000000C0626B3F 7A80FF0000
    VTP Management Domain: 'ONT'
    Duplex: full
    Management address(es):
    IP address: 10.215.215.1

    -------------------------
    Device ID: CORE_SWITCH
    Entry address(es):
    IP address: 10.215.215.1
    Platform: cisco WS-C3560V2-24TS, Capabilities: Router Switch IGMP
    Interface: FastEthernet0/1, Port ID (outgoing port): FastEthernet0/1
    Holdtime : 136 sec

    Version :
    Cisco IOS Software, C3560 Software (C3560-IPSERVICESK9-M), Version 12.2(50)SE1, RELEASE SOFTWARE (fc2)
    Copyright (c) 1986-2009 by Cisco Systems, Inc.
    Compiled Mon 06-Apr-09 08:00 by amvarma

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF01022501000000000000C0626B3F 7A80FF0000
    VTP Management Domain: 'ONT'
    Duplex: full
    Management address(es):
    IP address: 10.215.215.1

    -------------------------
    Device ID: Student_2.vnpro.24
    Entry address(es):
    IP address: 10.215.219.10
    Platform: cisco WS-C2950-24, Capabilities: Switch IGMP
    Interface: FastEthernet0/17, Port ID (outgoing port): FastEthernet0/24
    Holdtime : 122 sec

    Version :
    Cisco Internetwork Operating System Software
    IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(20)EA1, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2004 by cisco Systems, Inc.
    Compiled Wed 04-Feb-04 21:21 by yenanh

    advertisement version: 2
    Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF000000000000000F28A8 E540FF0000
    VTP Management Domain: ''
    Native VLAN: 1
    Duplex: full
    Management address(es):
    IP address: 10.215.219.10


    Bước 4: Ping kiểm tra
    Ping 10.215.15.11
    Ping 192.168.3.21
    Ping 10.215.23.12
    Ping 10.215.22.11
    Ping 10.215.14.11
    Ping 10.215.215.1
    Ping 8.8.8.8
    Last edited by dongkhe; 16-05-2015, 08:09 PM.
    Phạm Thanh Đông Khê
    Email: dongkhe@vnpro.org
    Hãy share hoặc like nếu thông tin hữu ích!
    ---------------------------------------------------------------------------------------------------------------------------------------------------
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  • #2
    Cảm ơn anh, bài viết rất ý nghĩa
    NSTECH chuyên cung cấp dịch vụ máy chủ ảo giá rẻ, dịch vụ Cloud Server chất lượng cao cho cộng đồng SEO

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