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电梯直达

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发表于 2012-07-12 15:06 |只看该作者 |倒序浏览

各位好！
一：我现在遇到的问题是：
1：绑成的虚拟网卡（bond0:10.10.2.83/16）ping 的时候丢包
2：我拔第一个网口em1是通的，然后把em1拔掉，em2放上去，第二个网口是不通的
二：先给大家介绍下我的硬件和软件环境:
1：服务器：Dell PE C6200(DELL云产品)，一个C6200有四台服务器，一台服务器有两个网口，其中有第一个口（em1）第二个口（em2）做链路聚合
         Dell 核心交换机：Force 10 E 1200i

2：OS：Centos 6.2 内核版本是：
Linux C6200_03 2.6.32-220.el6.x86_64 #1 SMP Tue Dec 6 19:48:22 GMT 2011 x86_64 x86_64 x86_64 GNU/Linux

网络参数：
我的笔记本（测试虚拟bond0的机器）：10.10.8.202/16
测试服务器：C6100其中一台服务器bond0:10.10.2.83/16

三：交换机和HOST配置如下：

1：交换机的配置如下：

动态聚合：配置完成后，一条链路是shutdown
静态聚合：配置完成后，链路OK，协议OK，portchannel 也是OK，但有丢包的现象

2：Host配置如下：

由于需要将两块网卡进行绑定，以下记录其操作步骤：
1）建立channel bonding interface
#vi /etc/sysconfig/network-scripts/ifcfg-bond0

输入下面内容
DEVICE=bond0
BOOTPROTO=none
IPADDR=10.10.2.83
NETMASK=255.255.0.0
ONBOOT=yes
USERCTL=no

修改网卡em1配置
DEVICE="em1"
BOOTPROTO=none
ONBOOT="no"
MASTER=bond0
SLAVE=yes
USERCTL=no

修改网卡em2配置
DEVICE="em2"
BOOTPROTO=none
ONBOOT="no"
MASTER=bond0
SLAVE=yes
USERCTL=no

2）编辑/etc/modprobe.d/
在/etc/modprobe.d/下新建bond0.conf文件，添加以下内容
#vi /etc/modprobe.d/bond0.conf
alias bond0 bonding
3）配置mode=0
#echo 0 > /sys/class/net/bond0/bonding/mode
#ifconfig bond0 up
#modprobe -a bonding
#service network restart
关于mode共有0-6等7种模式，详细请参考官方手册！
mode的值表示工作模式，他共有0，1,2,3,4,5,6这7种模式，常用的为0,1两种。
mode=0表示load balancing (round-robin)为负载均衡方式，两块网卡都工作。
mode=1表示fault-tolerance (active-backup)提供冗余功能，工作方式是主备的工作方式,也就是说默认情况下只有一块网卡工作,另一块做备份.
mode=2表示balance-x，提供负载均衡和冗余功能。
mode=3表示broadcast，这个模式提供容错性。
mode=4表示802.3ad，提供了ethtool的迅速，以及使用了802.3ad模式
mode=5表示balance-tlb，自动适应负载均衡，自动切换故障。在此基础上Ethtool支持驱动。
mode=6表示在5模式的基础上优化了arp的广播信息。

bonding 模式介绍和要求的条件：
http://blog.chinaunix.net/uid-49097-id-78251.html

四：主机show 下来的信息供大家参考：

[root@C6200_03 ~]# ifconfig
bond0    Link encap:Ethernet  HWaddr 18:03:73:FF:8D:08
      inet addr:10.10.2.83  Bcast:10.10.255.255  Mask:255.255.0.0
      inet6 addr: fe80::1a03:73ff:feff:8d08/64 Scope:Link
      UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
      RX packets:537493574 errors:0 dropped:0 overruns:73 frame:0
      TX packets:126793 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:258641520460 (240.8 GiB)  TX bytes:6087655 (5.8 MiB)

em1    Link encap:Ethernet  HWaddr 18:03:73:FF:8D:08
      inet addr:10.10.2.83  Bcast:10.10.255.255  Mask:255.255.0.0
      UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
      RX packets:268754210 errors:0 dropped:0 overruns:34 frame:0
      TX packets:63432 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:129323046907 (120.4 GiB)  TX bytes:3052339 (2.9 MiB)
      Memory:91120000-91140000

em2    Link encap:Ethernet  HWaddr 18:03:73:FF:8D:09
      inet addr:10.10.2.83  Bcast:10.10.255.255  Mask:255.255.0.0
      UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
      RX packets:268739364 errors:0 dropped:0 overruns:39 frame:0
      TX packets:63361 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:129318473553 (120.4 GiB)  TX bytes:3035316 (2.8 MiB)
      Memory:91100000-91120000

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:16436  Metric:1
      RX packets:25 errors:0 dropped:0 overruns:0 frame:0
      TX packets:25 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:1592 (1.5 KiB)  TX bytes:1592 (1.5 KiB)

[root@C6200_03 Desktop]# more /etc/net/bonding/bond0
Bonding Mode: load balancing (round-robin)
MII Status: up
MII Polling Interval (ms): 0
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: em1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 18:03:73:ff:8d:08
Slave queue ID: 0

Slave Interface: em2
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 18:03:73:ff:8d:09
Slave queue ID: 0

[root@C6200_03 Desktop]# dmesg |grep bond0
ADDRCONF(NETDEV_UP): bond0: link is not ready
bonding: bond0: Adding slave em1.
bonding: bond0: enslaving em1 as an active interface with an up link.
ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
bonding: bond0: Adding slave em2.
bonding: bond0: enslaving em2 as an active interface with an up link.
bond0: IPv6 duplicate address 2001:cc0:a012:8001:1a03:73ff:feff:8d08 detected!
8021q: adding VLAN 0 to HW filter on device bond0

[root@C6200_03 Desktop]# ethtool em1
Settings for em1:
      Supported ports: [ TP ]
      Supported link modes: 10baseT/Half 10baseT/Full
                              100baseT/Half 100baseT/Full
                              1000baseT/Full
      Supports auto-negotiation: Yes
      Advertised link modes:  10baseT/Half 10baseT/Full
                              100baseT/Half 100baseT/Full
                              1000baseT/Full
      Advertised pause frame use: No
      Advertised auto-negotiation: Yes
      Speed: 1000Mb/s
      Duplex: Full
      Port: Twisted Pair
      PHYAD: 1
      Transceiver: internal
      Auto-negotiation: on
      MDI-X: Unknown
      Supports Wake-on: pumbg
      Wake-on: g
      Current message level: 0x00000003 (3)
      Link detected: yes
[root@C6200_03 Desktop]# ethtool em2
Settings for em2:
      Supported ports: [ TP ]
      Supported link modes: 10baseT/Half 10baseT/Full
                              100baseT/Half 100baseT/Full
                              1000baseT/Full
      Supports auto-negotiation: Yes
      Advertised link modes:  10baseT/Half 10baseT/Full
                              100baseT/Half 100baseT/Full
                              1000baseT/Full
      Advertised pause frame use: No
      Advertised auto-negotiation: Yes
      Speed: 1000Mb/s
      Duplex: Full
      Port: Twisted Pair
      PHYAD: 1
      Transceiver: internal
      Auto-negotiation: on
      MDI-X: Unknown
      Supports Wake-on: pumbg
      Wake-on: g
      Current message level: 0x00000003 (3)
      Link detected: yes

[root@C6200_03 Desktop]# ethtool bond0
Settings for bond0:
      Link detected: yes