network/linux-bridge

[giscus[bot]]

network/linux-bridge

构建大规模高可用的分布式系统

https://www.thebyte.com.cn/network/linux-bridge.html

[Plus-Jia]

“宿主机根据路由规则再送至 VETP 设备或者 TUN 设备封装成一个新的数据包”，这里VETP应该打错了是VETH吧。
再次感谢作者，读到这里收货颇丰

[isno]

这儿单词打错，是 VTEP（VXLAN Tunnel End Points），VXLAN 通信里面的设备。 这块写得不清楚，我再重新改改。

[XinyuHu123456]

写得太好了

[Plus-Jia]

This is an automatic reply, confirming that your e-mail was received.Thank you ! !Plus_Jia

[wudilun123]

将 veth 另一端连接到 br0

$ ip link set dev veth0 master br0
这里应为$ ip link set dev veth1 master br0吧

[isno]

谢谢，已修改

[wudilun123]

网络命名空间名ns1/ns2和net1/net2混用了，3.5.3节也有这个问题

[isno]

谢谢，看来我还得再抽精力仔细校对一遍

[xiongyunhua-star]

需要添加两个语句，将veth1与veth3(桥接到br0的接口) 设置为up, ip link set veth1 up ; ip link set veth3 up; 否则的话 br0的状态处于DOWN(因为接口都是Down)

[Plus-Jia]

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[bingofather]

测试下来ping不通

[bingofather]

配置如下：
$ ip netns add ns1
$ ip netns add ns2
$ ip link add veth0 type veth peer name veth1
$ ip link add veth2 type veth peer name veth3
ip link add name br0 type bridge
ip link set br0 up
$ ip link set veth0 netns ns1
$ ip link set veth2 netns ns2
$ ip link set dev veth1 master br0
$ ip link set dev veth3 master br0
$ ip netns exec ns1 ip link set veth0 up
$ ip netns exec ns1 ip addr add 172.16.0.1/24 dev veth0
$ ip netns exec ns2 ip link set veth2 up
$ ip netns exec ns2 ip addr add 172.16.0.2/24 dev veth2
ip link set veth1 up
ip link set veth3 up
状态：
valid_lft forever preferred_lft forever
6: veth1@if7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UP group default qlen 1000
link/ether ee:81:66:b0:e1:54 brd ff:ff:ff:ff:ff:ff link-netns ns1
inet 172.16.0.3/24 scope global veth1
valid_lft forever preferred_lft forever
inet6 fe80::ec81:66ff:feb0:e154/64 scope link
valid_lft forever preferred_lft forever
8: veth3@if9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br0 state UP group default qlen 1000
link/ether 46:6e:44:c1:a9:65 brd ff:ff:ff:ff:ff:ff link-netns ns2
inet 172.16.0.4/24 scope global veth3
valid_lft forever preferred_lft forever
inet6 fe80::446e:44ff:fec1:a965/64 scope link
valid_lft forever preferred_lft forever
10: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 1e:a1:61:e4:b7:c2 brd ff:ff:ff:ff:ff:ff
inet6 fe80::1ca1:61ff:fee4:b7c2/64 scope link
valid_lft forever preferred_lft forever
以上在ns1内ping 172.16.0.2不通

[Plus-Jia]

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