Difference between revisions of "Teaming your network cards"
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| − | Teaming your | + | Teaming your network cards, also called ''bonding'', is a measure to ensure the availability of your [[network]]. When one card fails, e.g. due to a broken cable, the other card can take over and continue seamlessly. |
| − | Here is an example configuration for the | + | Here is an example configuration for the SUSE Linux distribution: |
'''/etc/sysconfig/network/ifcfg-bond0''' | '''/etc/sysconfig/network/ifcfg-bond0''' | ||
| Line 24: | Line 24: | ||
</pre> | </pre> | ||
| − | == | + | = Bonding cheatSheet = |
| + | <pre> | ||
| + | # hwinfo --netcard --short | ||
| + | network: | ||
| + | eth0 Broadcom NetXtreme II BCM5709S Gigabit Ethernet | ||
| + | eth1 Broadcom NetXtreme II BCM5709S Gigabit Ethernet | ||
| + | eth2 Intel 82599EB 10 Gigabit Dual Port Backplane Connection | ||
| + | eth3 Intel 82599EB 10 Gigabit Dual Port Backplane Connection | ||
| + | # ifconfig | ||
| + | bond0 Link encap:Ethernet HWaddr 00:24:E8:65:5C:62 | ||
| + | inet addr:10.68.204.16 Bcast:10.68.205.255 Mask:255.255.254.0 | ||
| + | inet6 addr: fe80::224:e8ff:fe65:5c62/64 Scope:Link | ||
| + | UP BROADCAST RUNNING MASTER MULTICAST MTU:9000 Metric:1 | ||
| + | RX packets:8749827 errors:0 dropped:0 overruns:0 frame:0 | ||
| + | TX packets:3616424 errors:0 dropped:0 overruns:0 carrier:0 | ||
| + | collisions:0 txqueuelen:0 | ||
| + | RX bytes:32341066615 (30842.8 Mb) TX bytes:1290907301 (1231.1 Mb) | ||
| + | |||
| + | bond0:foo Link encap:Ethernet HWaddr 00:24:E8:65:5C:62 | ||
| + | inet addr:192.168.51.6 Bcast:192.168.51.255 Mask:255.255.255.0 | ||
| + | UP BROADCAST RUNNING MASTER MULTICAST MTU:9000 Metric:1 | ||
| + | |||
| + | eth2 Link encap:Ethernet HWaddr 00:24:E8:65:5C:62 | ||
| + | UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1 | ||
| + | RX packets:7829884 errors:0 dropped:0 overruns:0 frame:0 | ||
| + | TX packets:3616424 errors:0 dropped:0 overruns:0 carrier:0 | ||
| + | collisions:0 txqueuelen:1000 | ||
| + | RX bytes:32284068709 (30788.4 Mb) TX bytes:1290907301 (1231.1 Mb) | ||
| + | |||
| + | eth3 Link encap:Ethernet HWaddr 00:24:E8:65:5C:62 | ||
| + | UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1 | ||
| + | RX packets:919943 errors:0 dropped:0 overruns:0 frame:0 | ||
| + | TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 | ||
| + | collisions:0 txqueuelen:1000 | ||
| + | RX bytes:56997906 (54.3 Mb) TX bytes:0 (0.0 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:16436 Metric:1 | ||
| + | RX packets:164615 errors:0 dropped:0 overruns:0 frame:0 | ||
| + | TX packets:164615 errors:0 dropped:0 overruns:0 carrier:0 | ||
| + | collisions:0 txqueuelen:0 | ||
| + | RX bytes:39524555 (37.6 Mb) TX bytes:39524555 (37.6 Mb) | ||
| + | |||
| + | # cat /proc/net/bonding/bond0 | ||
| + | Ethernet Channel Bonding Driver: v3.5.0 (November 4, 2008) | ||
| + | |||
| + | Bonding Mode: fault-tolerance (active-backup) | ||
| + | Primary Slave: None | ||
| + | Currently Active Slave: eth2 | ||
| + | MII Status: up | ||
| + | MII Polling Interval (ms): 100 | ||
| + | Up Delay (ms): 0 | ||
| + | Down Delay (ms): 0 | ||
| + | |||
| + | Slave Interface: eth2 | ||
| + | MII Status: up | ||
| + | Link Failure Count: 0 | ||
| + | Permanent HW addr: 00:24:e8:65:5c:62 | ||
| + | |||
| + | Slave Interface: eth3 | ||
| + | MII Status: up | ||
| + | Link Failure Count: 0 | ||
| + | Permanent HW addr: 00:24:e8:65:5c:64 | ||
| + | # ifenslave | ||
| + | Usage: ifenslave [-f] <master-if> <slave-if> [<slave-if>...] | ||
| + | ifenslave -d <master-if> <slave-if> [<slave-if>...] | ||
| + | ifenslave -c <master-if> <slave-if> | ||
| + | ifenslave --help | ||
| + | </pre> | ||
| − | * /usr/src/linux/Documentation/networking/bonding in the | + | = See also = |
| + | * /usr/src/linux/Documentation/networking/bonding in the kernel source | ||
[[Category:Guides]] | [[Category:Guides]] | ||
Latest revision as of 21:15, 31 August 2011
Teaming your network cards, also called bonding, is a measure to ensure the availability of your network. When one card fails, e.g. due to a broken cable, the other card can take over and continue seamlessly.
Here is an example configuration for the SUSE Linux distribution:
/etc/sysconfig/network/ifcfg-bond0
BOOTPROTO='dhcp' BROADCAST='' ETHTOOL_OPTIONS='' IPADDR='' MTU='' NAME='Unex ND010' NETMASK='' NETWORK='' REMOTE_IPADDR='' STARTMODE='auto' UNIQUE='rBUF.H7G5bqPjD8F' USERCONTROL='no' _nm_name='bus-pci-0000:02:0c.0' BONDING_MASTER=yes BONDING_SLAVE_0='bus-pci-0000:02:0c.0' BONDING_SLAVE_1='bus-pci-0000:02:0d.0' BONDING_MODULE_OPTS='miimon=100 mode=1 use_carrier=0'
Bonding cheatSheet
# hwinfo --netcard --short
network:
eth0 Broadcom NetXtreme II BCM5709S Gigabit Ethernet
eth1 Broadcom NetXtreme II BCM5709S Gigabit Ethernet
eth2 Intel 82599EB 10 Gigabit Dual Port Backplane Connection
eth3 Intel 82599EB 10 Gigabit Dual Port Backplane Connection
# ifconfig
bond0 Link encap:Ethernet HWaddr 00:24:E8:65:5C:62
inet addr:10.68.204.16 Bcast:10.68.205.255 Mask:255.255.254.0
inet6 addr: fe80::224:e8ff:fe65:5c62/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:9000 Metric:1
RX packets:8749827 errors:0 dropped:0 overruns:0 frame:0
TX packets:3616424 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:32341066615 (30842.8 Mb) TX bytes:1290907301 (1231.1 Mb)
bond0:foo Link encap:Ethernet HWaddr 00:24:E8:65:5C:62
inet addr:192.168.51.6 Bcast:192.168.51.255 Mask:255.255.255.0
UP BROADCAST RUNNING MASTER MULTICAST MTU:9000 Metric:1
eth2 Link encap:Ethernet HWaddr 00:24:E8:65:5C:62
UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
RX packets:7829884 errors:0 dropped:0 overruns:0 frame:0
TX packets:3616424 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:32284068709 (30788.4 Mb) TX bytes:1290907301 (1231.1 Mb)
eth3 Link encap:Ethernet HWaddr 00:24:E8:65:5C:62
UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
RX packets:919943 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:56997906 (54.3 Mb) TX bytes:0 (0.0 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:16436 Metric:1
RX packets:164615 errors:0 dropped:0 overruns:0 frame:0
TX packets:164615 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:39524555 (37.6 Mb) TX bytes:39524555 (37.6 Mb)
# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.5.0 (November 4, 2008)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth2
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth2
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:24:e8:65:5c:62
Slave Interface: eth3
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:24:e8:65:5c:64
# ifenslave
Usage: ifenslave [-f] <master-if> <slave-if> [<slave-if>...]
ifenslave -d <master-if> <slave-if> [<slave-if>...]
ifenslave -c <master-if> <slave-if>
ifenslave --help
See also
- /usr/src/linux/Documentation/networking/bonding in the kernel source
