Cisco 1700 1812J VLAN設定の最近のブログ記事

■SVIとは
Switch Virtual Interface (SVI) のこと。
要するにVLANにIPアドレスを付与してL3スイッチとして使えること（だと思う）。

Router#show int vlan 1
Vlan1 is up, line protocol is up
  Hardware is EtherSVI, address is 0017.5a2c.0eb0 (bia 0017.5a2c.0eb0)
  Description: $ETH-SW-LAUNCH$$INTF-INFO-FE 2$
  Internet address is 192.168.0.254/24
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:04, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     191181 packets input, 27300871 bytes, 0 no buffer
     Received 11227 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     246977 packets output, 142980129 bytes, 0 underruns
     0 output errors, 1 interface resets
     0 output buffer failures, 0 output buffers swapped out

Router #vlan database
Router(vlan) #vlan vlan_id
Router(vlan) #exit
Router #

Router(vlan) #no vlan vlan_id

Router #conf t
Router(config) #interface vlan vlan_num
Router(config-if) #ip address ip_address subnet_mask
Router(config-if) #end
Router #

Router(config-if) #no interface vlan vlan_id
Router(config-if) #end
Router #

Router #conf t
Router(config) #interface fastethernet port
Router(config-if) #shutdown
Router(config-if) #switchport mode access
Router(config-if) #switchport access vlan vlan_num
Router(config-if) #no shutdown
Router(config-if) #end

■vlan database コマンドでvlan設定モードにはいる。 　その後、showコマンド

Router#vlan database
Router(vlan)#show
  VLAN ISL Id: 1
    Name: default
    Media Type: Ethernet
    VLAN 802.10 Id: 100001
    State: Operational
    MTU: 1500
    Translational Bridged VLAN: 1002
    Translational Bridged VLAN: 1003


  VLAN ISL Id: 1002
    Name: fddi-default
    Media Type: FDDI
    VLAN 802.10 Id: 101002
    State: Operational
    MTU: 1500
    Bridge Type: SRB
    Translational Bridged VLAN: 1
    Translational Bridged VLAN: 1003

  VLAN ISL Id: 1003
    Name: token-ring-default
    Media Type: Token Ring
    VLAN 802.10 Id: 101003
    State: Operational
    MTU: 1500
    Bridge Type: SRB
    Ring Number: 0
    Bridge Number: 1
    Parent VLAN: 1005
    Maximum ARE Hop Count: 7
    Maximum STE Hop Count: 7
    Backup CRF Mode: Disabled
    Translational Bridged VLAN: 1
    Translational Bridged VLAN: 1002

  VLAN ISL Id: 1004
    Name: fddinet-default
    Media Type: FDDI Net
    VLAN 802.10 Id: 101004
    State: Operational
    MTU: 1500
    Bridge Type: SRB
    Bridge Number: 1
    STP Type: IBM

  VLAN ISL Id: 1005
    Name: trnet-default
    Media Type: Token Ring Net
    VLAN 802.10 Id: 101005
    State: Operational
    MTU: 1500
    Bridge Type: SRB
    Bridge Number: 1
    STP Type: IBM

■通常の状態からshow vlan-switchでもよい 　show vlan-switch brief だと、簡易な表示になる

Router#show vlan-switch


VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa2, Fa3, Fa4, Fa5, Fa6, Fa7, Fa8, Fa9
1002 fddi-default                     active
1003 token-ring-default               active
1004 fddinet-default                  active
1005 trnet-default                    active

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

Router(vlan)#abort
Aborting....
Router#