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@jp_yen(切手 一円)

Realtek の USB NIC に VLAN を割り当てる

Last updated at Posted at 2021-02-05

USB NIC で VLAN 接続する

Windwos10 に

使用した NIC

Belkin USB-C to Gigabit Ethernet + USB-C 60W PD対応 有線LAN 変換アダプター INC001btBK-A

Vlan の設定に Diagnostic Program for Win7/Win8/Win10 をダウンロードしてインストールする。
ついでに、Driver も同じページからダウンロードできるのでアップデートしてみる。

ネットワークアドレス

Vlan NetWork Cisco2901 (Gi0/0) PC (USB NIC)
10 10.0.10.0/24 10.0.10.1 10.0.10.10
20 10.0.20.0/24 10.0.20.1 10.0.20.10
30 10.0.30.0/24 10.0.30.1 10.0.30.10
40 10.0.40.0/24 10.0.40.1 10.0.40.10
50 10.0.50.0/24 10.0.50.1 10.0.50.10

VLAN を作る

デフォルトで有効だが、念のため VLAN が有効になっていることを確認する。
イーサネットのプロパティから「構成」を選択
image.png
開いたウィンドウで「詳細設定」タブを選択し、VLAN が有効になっていることを確認。
image.png

確認が終わったので、先ほどインストールした Diagnostic Utility をスタートメニューから起動。
image.png
対象の NIC の VLAN 欄を選択し VLAN を追加する。
image.png
順番に追加したのに、順番に並びませんねぇ。

インターフェイスの名前を変更

image.png
分かりにくいので、インターフェイスの名前を VLAN番号に変更する。

image.png

image.png

IP アドレスを設定

一つ一つ開いて設定するのは面倒なので PowerShell で設定する。

IP設定.ps1
$ifs = @(
	# New-NetIPAddress の引数を指定
	# @{InterfaceAlias = "" ; IPAddress = "" ; PrefixLength = "" ; -DefaultGateway ""}
	@{InterfaceAlias = "VLAN0010" ; IPAddress = "10.0.10.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0020" ; IPAddress = "10.0.20.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0030" ; IPAddress = "10.0.30.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0040" ; IPAddress = "10.0.40.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0050" ; IPAddress = "10.0.50.10" ; PrefixLength = "24"}
)

foreach ($if in $ifs){
	# 設定前に削除が必要
	Get-NetIPAddress -InterfaceAlias $if.InterfaceAlias | Remove-NetIPAddress -Confirm:$false > $null
	# デフォルトルートが設定されていれば削除
	Remove-NetRoute -InterfaceAlias $if.InterfaceAlias -DestinationPrefix 0.0.0.0/0 -Confirm:$false 2> $null

	# アドレスを設定
	New-NetIPAddress -AddressFamily IPv4 @if > $null

	Get-NetIPAddress -InterfaceAlias $if.InterfaceAlias | Select-Object InterfaceAlias,IPAddress,PrefixLength
}

# Get-NetIPConfiguration |? InterfaceAlias -Match 'VLAN*' | Select-Object * | Out-GridView
実行結果
InterfaceAlias IPAddress  PrefixLength
-------------- ---------  ------------
VLAN0010       10.0.10.10           24
VLAN0020       10.0.20.10           24
VLAN0030       10.0.30.10           24
VLAN0040       10.0.40.10           24
VLAN0050       10.0.50.10           24

Cisco 側のインターフェース設定

conf t
interface GigabitEthernet0/0
 no ip address
 no shutdown
 duplex full
 speed 1000

interface GigabitEthernet0/0.10
 encapsulation dot1q 10
 ip address 10.0.10.1 255.255.255.0

interface GigabitEthernet0/0.20
 encapsulation dot1q 20
 ip address 10.0.20.1 255.255.255.0

interface GigabitEthernet0/0.30
 encapsulation dot1q 30
 ip address 10.0.30.1 255.255.255.0

interface GigabitEthernet0/0.40
 encapsulation dot1q 40
 ip address 10.0.40.1 255.255.255.0

interface GigabitEthernet0/0.50
 encapsulation dot1q 50
 ip address 10.0.50.1 255.255.255.0

接続確認

ping
Router#ping 10.0.10.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.10.10, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/4 ms
Router#ping 10.0.20.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.20.10, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/4 ms
Router#ping 10.0.30.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.30.10, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/4 ms
Router#ping 10.0.40.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.40.10, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/4 ms
Router#ping 10.0.50.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.50.10, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/4 ms
Router#

普通に繋がりますねぇ。

native vlan

vlan 7 を native vlan (タグなし) にする。
先ほどから vlan 7, 29 を追加。

Vlan NetWork Cisco2901 (Gi0/0) PC (USB NIC)
7 10.0.7.0/24 10.0.7.1 10.0.7.10
10 10.0.10.0/24 10.0.10.1 10.0.10.10
20 10.0.20.0/24 10.0.20.1 10.0.20.10
29 10.0.29.0/24 10.0.29.1 10.0.29.10
30 10.0.30.0/24 10.0.30.1 10.0.30.10
40 10.0.40.0/24 10.0.40.1 10.0.40.10
50 10.0.50.0/24 10.0.50.1 10.0.50.10

Windows 側

vlan0029 を作成しアドレスを設定。(vlan7 は通常のインターフェイスに設定)

IP設定.ps1
$ifs = @(
	# New-NetIPAddress の引数を指定
	# @{InterfaceAlias = "" ; IPAddress = "" ; PrefixLength = "" ; -DefaultGateway ""}
	@{InterfaceAlias = "イーサネット" ; IPAddress = "10.0.7.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0010" ; IPAddress = "10.0.10.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0020" ; IPAddress = "10.0.20.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0029" ; IPAddress = "10.0.29.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0030" ; IPAddress = "10.0.30.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0040" ; IPAddress = "10.0.40.10" ; PrefixLength = "24"}
	@{InterfaceAlias = "VLAN0050" ; IPAddress = "10.0.50.10" ; PrefixLength = "24"}
)

foreach ($if in $ifs){
    # 設定前に削除が必要
	Get-NetIPAddress -InterfaceAlias $if.InterfaceAlias | Remove-NetIPAddress -Confirm:$false > $null
    # デフォルトルートが設定されていれば削除
	Remove-NetRoute -InterfaceAlias $if.InterfaceAlias -DestinationPrefix 0.0.0.0/0 -Confirm:$false 2> $null

    # アドレスを設定
	New-NetIPAddress -AddressFamily IPv4 @if > $null

    Get-NetIPAddress -InterfaceAlias $if.InterfaceAlias | Select-Object InterfaceAlias,IPAddress,PrefixLength
}

# Get-NetIPConfiguration |? InterfaceAlias -Match 'VLAN*' | Select-Object * | Out-GridView

Cisco 側

conf t
interface GigabitEthernet0/0
 no ip address
 no shutdown
 duplex full
 speed 1000

interface GigabitEthernet0/0.7
 encapsulation dot1q 7 native
 ip address 10.0.7.1 255.255.255.0

interface GigabitEthernet0/0.10
 encapsulation dot1q 10
 ip address 10.0.10.1 255.255.255.0

interface GigabitEthernet0/0.20
 encapsulation dot1q 20
 ip address 10.0.20.1 255.255.255.0

interface GigabitEthernet0/0.29
 encapsulation dot1q 29
 ip address 10.0.29.1 255.255.255.0

interface GigabitEthernet0/0.30
 encapsulation dot1q 30
 ip address 10.0.30.1 255.255.255.0

interface GigabitEthernet0/0.40
 encapsulation dot1q 40
 ip address 10.0.40.1 255.255.255.0

interface GigabitEthernet0/0.50
 encapsulation dot1q 50
 ip address 10.0.50.1 255.255.255.0

うん、繋がりますね。

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