标签:drop arc 研发 汇聚 sha vxlan 基于 algo 语言
网络虚拟化技术什么是VLAN?
Virtual LAN:LAN即为广播帧到的节点范围,也即能够直接通信的范围;
VLAN:
基于MAC地址
基于交换机Port实现
基于IP地址实现
基于用户实现
交换机接口的类型:
访问链接:access link
汇聚链接:trunk link
VLAN的汇聚方式:
IEEE 802.1q
ISL:Inter Switch Link
VLAN间路由:
路由器:
访问链接:router为每个VLAN提供一个接口
汇聚链接:router只向交换机提供一个接口
三层交换机:
网络虚拟化:
复杂的虚拟化网络:
netns
OpenVswitch
OVS:基于C语言研发,
802.1q, trunk, access
NIC bonding
NetFlow, sFlow
Qos配置及策略
GRE, VxLAN,
OpenFlow
OVS的组成部分:
ovs-vswitchd:OVS daemon,实现数据报文交换功能,和Linux内核兼容模块一同实现基于流的交换技术;
ovsdb-server:轻量级的数据库服务,主要保存了整个OVS的配置信息,例如接口、交换内容、VLAN等等,ovs-vswithed的交换功能基于此库实现;
ovs-dpctl:配置交换机内核模块的工具程序,用于控制转发规则;
ovs-vsctl:用于获取或更改ovs-vswitchd的配置信息,其修改操作会保存至ovsdb-server中;
ovs-appctl
ovsdbmonitor:gui工具显示ovsdb-server中的数据信息的;
ovs-controller:流控工具
ovs-ofctl
ovs-pki:为openflow创建管理pki的命令行工具;
实验环境:
操作系统:Centos6.6
IP地址:172.16.100.6
内核:2.6.32-504.el6.x86_64
[root@kvm ~]# modinfo 8021q
filename: /lib/modules/3.10.0-862.el7.x86_64/kernel/net/8021q/8021q.ko.xz
version: 1.8
license: GPL
alias: rtnl-link-vlan
retpoline: Y
rhelversion: 7.5
srcversion: A57F0AC30965A554203D4E3
depends: mrp,garp
intree: Y
vermagic: 3.10.0-862.el7.x86_64 SMP mod_unload modversions
signer: CentOS Linux kernel signing key
sig_key: 3A:F3:CE:8A:74:69:6E:F1:BD:0F:37:E5:52:62:7B:71:09:E3:2B:96
sig_hashalgo: sha256
[root@kvm ~]# modprobe 8021q
[root@kvm ~]# yum info vconfig
Name : vconfig
Arch : x86_64
Version : 1.9
Release : 8.1.el6
Size : 178 k
Repo : installed
From repo : anaconda-CentOS-201410241409.x86_64
Summary : Linux 802.1q VLAN configuration utility
URL : http://www.candelatech.com/~greear/vlan.html
License : GPLv2+
Description : The vconfig program configures and adjusts 802.1q VLAN parameters.
[root@kvm ~]# ls /proc/net/vlan/
config
实验环境:
node1:
操作系统:Centos6.6
IP地址:172.16.100.6
内核:2.6.32-504.el6.x86_64
网卡1:VMnet0
网卡2:VMnet1
网卡3:VMnet8
node2:
操作系统:Centos6.6
IP地址:172.16.100.6
内核:2.6.32-504.el6.x86_64
网卡1:VMnet0 172.16.100.20
网卡2:VMnet1
网卡3:VMnet2
node3:
操作系统:Centos6.6
IP地址:172.16.100.6
内核:2.6.32-504.el6.x86_64
网卡1:VMnet0 172.16.100.30
网卡2:VMnet1
网卡3:VMnet2
node2:
[root@node2 network-scripts]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:90:D0:92
inet addr:172.16.100.20 Bcast:172.16.100.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe90:d092/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1402 errors:0 dropped:0 overruns:0 frame:0
TX packets:1191 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:119155 (116.3 KiB) TX bytes:118239 (115.4 KiB)
eth1 Link encap:Ethernet HWaddr 00:0C:29:90:D0:A6
inet addr:192.168.10.7 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe90:d0a6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:1244 (1.2 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
node3:
[root@node3 network-scripts]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:D6:6A:92
inet addr:172.16.100.30 Bcast:172.16.100.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fed6:6a92/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:681 errors:0 dropped:0 overruns:0 frame:0
TX packets:602 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:60082 (58.6 KiB) TX bytes:62754 (61.2 KiB)
eth1 Link encap:Ethernet HWaddr 00:0C:29:D6:6A:A6
inet addr:192.168.10.8 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fed6:6aa6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:364 (364.0 b)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
node1:
标签:drop arc 研发 汇聚 sha vxlan 基于 algo 语言
原文地址:http://blog.51cto.com/smoke520/2340864