ovs网桥br上有三个端口:eth1、eth2、eth3,他们当前都是默认状态。 端口eth1会收到任意报文(可能带vlan,也可能不带vlan) 我希望进入eth1的所有报文都能从eth2出去,并携带tag 1001。 并且eth3上不能收到任何进入eth1的报文。 要实现上面的场景,应该如何配置流表
时间: 2024-03-23 17:41:06 浏览: 20
针对该场景,可以通过 Open vSwitch(OVS)的流表来实现:
1. 禁止 eth1 到 eth3 的流量转发:
```
ovs-ofctl add-flow br priority=100,in_port=1,actions=drop
ovs-ofctl add-flow br priority=100,in_port=3,actions=drop
```
2. 在 eth1 上匹配所有报文,并将其转发到 eth2,并添加 VLAN 标签 1001:
```
ovs-ofctl add-flow br priority=200,in_port=1,actions=mod_vlan_vid:1001,output:2
```
这些流表规则的含义如下:
- 第一个流表规则(priority=100)禁止 eth1 和 eth3 之间的流量转发,因为你不想让从 eth1 进来的流量进入到 eth3。
- 第二个流表规则(priority=200)匹配所有从 eth1 进入的报文,并添加 VLAN 标签 1001,然后将其转发到 eth2。
注意,上述命令中的 `br` 是你的 OVS 网桥名称,`eth1`、`eth2`、`eth3` 是你的端口名称。你需要根据实际情况进行修改。
相关问题
ovs-vsctl: Error detected while setting up 'eth0': could not open network device eth0 (No such device).
This error message suggests that the network device "eth0" is not present on the system. This could be due to a number of reasons, such as the device being disabled, not properly installed, or being renamed.
To resolve the issue, you can try the following steps:
1. Check if the device is present by running the command `ifconfig -a`. If the device is not listed, it may not be installed or recognized by the system.
2. Check if the device is enabled by running the command `sudo ifconfig eth0 up`. If it is disabled, this command will enable it.
3. Check if the device has been renamed by running the command `ip link show`. This will show a list of all network interfaces and their current status. If the device has been renamed, you will need to update the configuration files accordingly.
4. If none of the above steps work, try restarting the network service by running the command `sudo systemctl restart networking.service`. This will restart the network service and may help resolve any issues.
If the issue persists, you may need to consult with a network administrator or seek further assistance from a technical support team.
在OpenvSwitch中,下列命令解释错误的是() A、 ovs-vsctl list-br:列出所有的网桥 B、 ovs-vsctl add-br br0:添加网桥 C、 ovs-ofctl show br0:列出交换机中匹配的流表 D、 ovs-ofctl del-flows br0:删除所有的流表
命令ovs-ofctl show br0列出的是交换机中安装的流表的统计信息,而不是匹配的流表。因此,选项C解释错误。正确解释是:ovs-ofctl show br0:列出交换机中安装的流表的统计信息。选项D的解释也不准确,ovs-ofctl del-flows br0是删除br0中的所有流表项,而不是删除所有的流表。
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