LACP kasutamine

Sissejuhatus

Ethernet interface bonding tehnika võimaldab teatud tingimustel kasutada mitut arvutisse paigaldatud füüsilist võrguseadet ühe loogilise seadmena.

Tööpõhimõte

TODO

SLM2008 lüliti

TODO

Debian GNU/Linux

Tarkvara paigaldamine

Vajalik tarkvara sisaldub operatsioonisüsteemi tuumas, juhtprogrammi ifenslave paigaldamiseks sobib öelda

# apt-get install ifenslave-2.6

Seadistamine

Bonding seadme nimeks on tavaliselt bond0 ning LACP bonding (mitte segi ajada failover-bond seadmega) seadistatakse /etc/network/interfaces sektsiooniga

auto bond0
iface bond0 inet static
  address 10.0.3.87
  netmask 255.255.255.0
  slaves eth1 eth2
  bond_mode 802.3ad
  bond_miimon 100
  bond-lacp-rate 4 

Vastav seadistamine käsurealt võiks toimuda nt selliselt

 # modprobe bonding mode=802.3ad lacp_rate=1 miimon=100 xmit_hash_policy=layer3+4
 # ifconfig bond0 10.0.3.87 netmask 255.255.0.0
 # ifenslave bond0 eth1 eth2

Bonding seadme eemaldamiseks sobib öelda

# ifenslave -d bond0 eth1 eth2
# rmmod bonding

Bonding seadme omadusi saab vaadata

# cat /proc/net/bonding/bond0 
Ethernet Channel Bonding Driver: v3.2.5 (March 21, 2008)

Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer3+4 (1)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

802.3ad info
LACP rate: fast
Active Aggregator Info:
        Aggregator ID: 1
        Number of ports: 2
        Actor Key: 17
        Partner Key: 3
        Partner Mac Address: a8:b1:d4:95:a3:85

Slave Interface: eth1
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:0e:0c:ba:4b:3e
Aggregator ID: 1

Slave Interface: eth2
MII Status: up
Link Failure Count: 4
Permanent HW addr: 00:1b:21:1d:f6:06
Aggregator ID: 1

kus

• Bonding Mode: IEEE 802.3ad Dynamic link aggregation - kasutusel olev bonding režiim

Kasutamine

TODO

OpenBSD

LACP seadme moodustamiseks sobib öelda nt

# ifconfig trunk0 trunkport re1 trunkport re2 trunkproto lacp

Seadme omaduste esitamiseks

# ifconfig trunk0                 
trunk0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        lladdr 00:0c:42:07:1a:45
        priority: 0
        trunk: trunkproto lacp
        trunk id: [(8000,00:0c:42:07:1a:45,40E4,0000,0000),
                (8000,a8:b1:d4:95:a3:85,0003,0000,0000)]
               trunkport re2 active,collecting,distributing
               trunkport re1 active,collecting,distributing
        groups: trunk
        media: Ethernet autoselect
        status: active
        inet6 fe80::20c:42ff:fe07:1a45%trunk0 prefixlen 64 scopeid 0x1c
        inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255

kus

• trunk id järel on esitatud komponentide mac aadressid
• tundub, et mõlema komponendi olemasolul reeglina ühendusega seotud väljuvad paketid liiguvad läbi ühe seadme ja sisenevad läbi teise

FreeBSD

vaja seadistada rc.confi

ifconfig_em0="up"
ifconfig_em1="up"
cloned_interfaces="lagg0"
ifconfig_lagg0="laggproto lacp laggport em0 laggport em1"
ipv4_addrs_lagg0="192.168.1.3/24"

Ning ifconfig peaks seejärel teatama

em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC>
        ether 00:22:19:1d:7b:a8
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=389b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
        ether 00:22:19:1d:7b:a8
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active

lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC>
        ether 00:22:19:1d:7b:a8
        inet 192.168.1.3 netmask 0xfffffc00 broadcast 192.168.3.255
        media: Ethernet autoselect
        status: active
        laggproto lacp
        laggport: em1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
        laggport: em0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING> 

• Ametlik FreeBSD manual http://www.freebsd.org/doc/handbook/network-aggregation.html

Märkused

• Tundub, et bondinguks ettevalmistatud switchi kaudu arvutit ei õnnestu üle PXE alglaadida.

Kasulikud lisamaterjalid

• L2 redundantsus
• http://www.howtoforge.com/nic-bonding-on-debian-lenny
• http://www.wiki.cl.cam.ac.uk/rowiki/SysInfo/LinksysSwitch
• http://www.kernel.org/doc/Documentation/networking/bonding.txt