Cisco 1812JのVLAN数の制限

 04, 2009 09:00
Cisco1812JではVLANを8個までしか作成できません。

1拠点にセグメントを大量に作る場合、頭の片隅に入れておかないと困る場合があるかも。
小規模拠点向けという事で制限を設けているんでしょうね。


Router#sh 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#
Router#vlan database
Router(vlan)#vlan 10
VLAN 10 added:
Name: VLAN0010
Router(vlan)#vlan 20
VLAN 20 added:
Name: VLAN0020
Router(vlan)#vlan 30
VLAN 30 added:
Name: VLAN0030
Router(vlan)#vlan 40
VLAN 40 added:
Name: VLAN0040
Router(vlan)#vlan 50
VLAN 50 added:
Name: VLAN0050
Router(vlan)#vlan 60
VLAN 60 added:
Name: VLAN0060
Router(vlan)#vlan 70
VLAN 70 added:
Name: VLAN0070
Router(vlan)#vlan 80
Vlan can not be added. Maximum number of 8 vlan(s) in the database.

Router(vlan)#exit
APPLY completed.
Exiting....
Router#sh vlan-switch

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa2, Fa3, Fa4, Fa5, Fa6, Fa7
Fa8, Fa9
10 VLAN0010 active
20 VLAN0020 active
30 VLAN0030 active
40 VLAN0040 active
50 VLAN0050 active
60 VLAN0060 active
70 VLAN0070 active
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
10 enet 100010 1500 - - - - - 0 0
20 enet 100020 1500 - - - - - 0 0
30 enet 100030 1500 - - - - - 0 0

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
40 enet 100040 1500 - - - - - 0 0
50 enet 100050 1500 - - - - - 0 0
60 enet 100060 1500 - - - - - 0 0
70 enet 100070 1500 - - - - - 0 0
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を削除する場合は下記コマンドの後リブート。
VLAN情報はコンフィグとは別ですから、触ったことが無い人だと盲点となりやすいところではありますね

Router#delete vlan.dat
Delete filename [vlan.dat]?
Delete flash:vlan.dat? [confirm]
Router#
Router#reload
Proceed with reload? [confirm]

Tag:Cisco1812J VLAN


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