转载连接: http://blog.csdn.net/quqi99
linux有七种网卡绑定模式:
bond0:round-robin, 轮询。各接口轮流使用。需要交换机支持。交换机要配置成聚合口
bond1:active-backup, 主备。即只有一个接口在使用,当接口出现问题的时候再切换到别的接口
bond2:load balancing(xor), 根据数据的目的mac地址计算使用的端口。
bond3:broadcast, 所有数据在每个接口都复制一份
bond4:lacp, IEEE 802.3ad动态链路聚合。创建共享相同的速率和双工模式的聚合组。能根据802.3ad规范利用所有的slave来建立聚合链路。Salve的出站选择取决于传输的hash策略,默认策略是简单的XOR策略,而hash策略则可以通过xmit_hash_policy选项加以改变。
bond5:对外出流量负载均衡
bond6:通过修改ARP包实现负载均衡, 即对到来的arp请求依据一定策略使用不通过的arp进行回复
vi /etc/network/interfaces
auto bond0
iface bond0 inet manual
bond-slaves eth2 eth1
bond-miimon 100
bond-mode 4
bond-lacp-rate 1
bond-xmit-hash-policy 2
mtu 9000
auto eth2
iface eth2 inet manual
bond-master bond0
auto eth1
iface eth1 inet manual
bond-master bond0
auto bond0.1600
iface bond0.1600 inet static
address 10.0.1.108
netmask 255.255.255.0
up ip route add 10.0.0.0/16 via 10.0.1.1 dev bond0.1600 || true
hua@node1:~$ cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)
Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2+3 (2)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
802.3ad info
LACP rate: fast
Min links: 0
Aggregator selection policy (ad_select): stable
Slave Interface: eth1
MII Status: up
Speed: 100 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 2c:53:4a:02:20:3c
Slave queue ID: 0
Aggregator ID: 1
Actor Churn State: none
Partner Churn State: churned
Actor Churned Count: 0
Partner Churned Count: 2
Slave Interface: eth2
MII Status: up
Speed: 100 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 2c:53:4a:02:20:3d #若此处是00:00:00:00:00:00的话意味着交换机没配置LACP,这叫fallback模式,就像bond只有一个NIC一样影响性能,但合法
Slave queue ID: 0
Aggregator ID: 2
Actor Churn State: churned
Partner Churn State: churned
Actor Churned Count: 1
Partner Churned Count: 1
其他
这里的网口bond0被插到了br-bond0中,但在neutron中还有一个br-ex需要plug一个没有使用的网口,如果没有多余的网卡怎么样,可以这样(见: https://bugs.launchpad.net/charms/+source/neutron-openvswitch/+bug/1635067):
# create veth pair between br-bond0 and veth-tenant
ip l add name veth-br-bond0 type veth peer name veth-tenant
# set mtu if needed on veth interfaces and turn up
#ip l set dev veth-br-bond0 mtu 9000
#ip l set dev veth-tenant mtu 9000
ip l set dev veth-br-bond0 up
ip l set dev veth-tenant up
juju set neutron-openvswitch data-port="br-ex:veth-tenant"
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原文链接:https://blog.csdn.net/quqi99/article/details/51251210