くわぞうメモ

■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）。

■SVIの状態を見る

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

投稿者: くわぞう 日時: 20:49 | パーマリンク | コメント (0)

■VLANの作成、削除

Router #vlan database

Router(vlan) #vlan vlan_id

Router(vlan) #exit

Router #

Router(vlan) #no vlan vlan_id

■SVIの設定

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 #

■ポートをVLANに割り当てる

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

投稿者: くわぞう 日時: 20:16 | パーマリンク | コメント (0)

■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

■なにも変更しないでvlan設定モードを抜けるには

Router(vlan)#abort

Aborting....

Router#

投稿者: くわぞう 日時: 20:02 | パーマリンク | コメント (0)