January 2023
Intermediate to advanced
458 pages
14h 16m
Chinese
Content preview from 可编程网络自动化
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410
｜
附录
A
mode DEFAULT group default qlen 1000
link/ether 00:0c:29:7d:38:9d brd ff:ff:ff:ff:ff:ff
vagrant@trusty:~$
尽管这些例子展示的是将物理接口分配给网络名称空间，但是要记住，可以为网络名称空
间分配任意类型的接口（物理接口、
VLAN
接口或
macvlan
接口）
。当你将某种接口分配
给网络名称空间时，就将名称空间与外界（如果使用的是
VLAN
接口
，就是某个
VLAN
）
连接在一起了。如果想把这个新的名称空间与默认名称空间相连呢？这正是
veth
（
virtual
Ethernet
，虚拟以太网）发挥作用之处。
A.3.5
使用
veth pair
连接网络名称空间
virtual Ethernet pair
（通常称为
veth pair
1
）是
Linux
内核支持的一种特殊的逻辑接口。由于
其工作方式，
veth pair
总是
成对出现：从其中一个接口进入的流量会从另一个接口流出。
和其他类型的接口一样，
veth pair
的
成员可以被分配给非默认网络名称空间，因而允许用
户将网络名称空间彼此相连。
下面来快速了解一下
veth pair
是如何工作的。首先，使用
ip
命令创建
veth pair
。该命令的
语法为
ip link add
veth-name
type veth peer name
veth-peer
。如果想创建名为
veth0
和
veth1
的
veth pair
，则命令如下所示。
vagrant@trusty:~$ ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.