我有一个物理接口 eth0,我想创建两个虚拟接口并将它们与 eth0 桥接。为此,我执行以下操作:
#Create the virtual interfaces
tunctl -t tap0
tunctl -t tap1
ifconfig tap0 up
ifconfig tap1 up
#Create the bridge
brctl addbr br0
brctl stp br0 off
brctl addif br0 eth0
brctl addif br0 tap0
brctl addif br0 tap1
#Turning up the bridge
ifconfig br0 up
然而我的问题是,分接接口在桥中总是显示为禁用,并且没有流量流向它们。
$brctl show br0
bridge name bridge id STP enabled interfaces
br0 8000.080027cabeba no eth2
tap0
tap1
$brctl showstp br0
br0
bridge id 8000.080027cabeba
designated root 8000.080027cabeba
root port 0 path cost 0
max age 20.00 bridge max age 20.00
hello time 2.00 bridge hello time 2.00
forward delay 15.00 bridge forward delay 15.00
ageing time 300.01
hello timer 0.00 tcn timer 0.00
topology change timer 0.00 gc timer 298.42
flags
eth2 (1)
port id 8001 state forwarding
designated root 8000.080027cabeba path cost 4
designated bridge 8000.080027cabeba message age timer 0.00
designated port 8001 forward delay timer 12.97
designated cost 0 hold timer 1.24
flags
tap0 (2)
port id 8002 state disabled
designated root 8000.080027cabeba path cost 100
designated bridge 8000.080027cabeba message age timer 0.00
designated port 8002 forward delay timer 0.00
designated cost 0 hold timer 0.00
flags
tap1 (3)
port id 8003 state disabled
designated root 8000.080027cabeba path cost 100
designated bridge 8000.080027cabeba message age timer 0.00
designated port 8003 forward delay timer 0.00
designated cost 0 hold timer 0.00
flags
有没有办法将 Tap 接口设置为转发状态?我不明白为什么不能,因为 STP 被禁用了。
干杯
丹尼尔
答案1
仅当用户打开设备句柄时,才会在点击上设置载体(IFF_RUNNING)。
对于使用 tunctl 创建的持久 tap,你需要一个附加到该 tap 的应用程序,例如: