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I need fault-tolerance, link aggregation, and load-balancing, ... which bonding module( round robing, adaptive load balancing, etc) is appropriate, or which bonding module should I use ? HW and OS ...
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  1. #1
    Linux Newbie
    Join Date
    Feb 2007
    Posts
    248

    which bonding module should I use ?


    I need fault-tolerance, link aggregation, and load-balancing, ... which bonding module( round robing, adaptive load balancing, etc) is appropriate, or which bonding module should I use ?

    HW and OS Details:
    OS: SUSE Linux Enterprise 10 SP2(SLES10SP2)
    HW: HP Proliant DL380 G6
    NIC: Broadcom NetXtreme II BCM5709 Gigabit Ethernet

    running 'ethtool' on eth0, and eth2 produces the following output

    # ethtool eth0
    Settings for eth0:
    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 auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: g
    Wake-on: g
    Link detected: yes

    I have used 'adaptive load balancing' and 'round-robin' both, but dont know which one will fulfill my requirement.

    when created the bond0 using 'adaptive load balancing' module
    # cat /proc/net/bonding/bond0

    Ethernet Channel Bonding Driver: v3.0.3 (March 23, 2006)

    Bonding Mode: adaptive load balancing
    Primary Slave: None
    Currently Active Slave: eth0
    MII Status: up
    MII Polling Interval (ms): 100
    Up Delay (ms): 0
    Down Delay (ms): 0

    Slave Interface: eth0
    MII Status: up
    Link Failure Count: 0
    Permanent HW addr: 00:25:b3:22:9c:12

    Slave Interface: eth2
    MII Status: up
    Link Failure Count: 0
    Permanent HW addr: 00:25:b3:22:9c:16


    when created the bond0 using 'round robin' module
    # cat /proc/net/bonding/bond0

    Ethernet Channel Bonding Driver: v3.0.3 (March 23, 2006)

    Bonding Mode: load balancing (round-robin)
    MII Status: up
    MII Polling Interval (ms): 100
    Up Delay (ms): 0
    Down Delay (ms): 0

    Slave Interface: eth0
    MII Status: up
    Link Failure Count: 0
    Permanent HW addr: 00:25:b3:22:9c:12

    Slave Interface: eth2
    MII Status: up
    Link Failure Count: 0
    Permanent HW addr: 00:25:b3:22:9c:16

    please suggest/recommend

  2. #2
    Linux Guru
    Join Date
    Nov 2007
    Posts
    1,755
    GOOGLE: linux bonding modes

    mode=0 (balance-rr)
    Round-robin policy: Transmit packets in sequential order from the first available slave through the last. This mode provides load balancing and fault tolerance.

    mode=1 (active-backup)
    Active-backup policy: Only one slave in the bond is active. A different slave becomes active if, and only if, the active slave fails. The bond's MAC address is externally visible on only one port (network adapter) to avoid confusing the switch. This mode provides fault tolerance. The primary option affects the behavior of this mode.

    mode=2 (balance-xor)
    XOR policy: Transmit based on [(source MAC address XOR'd with destination MAC address) modulo slave count]. This selects the same slave for each destination MAC address. This mode provides load balancing and fault tolerance.

    mode=3 (broadcast)
    Broadcast policy: transmits everything on all slave interfaces. This mode provides fault tolerance.

    mode=4 (802.3ad)
    IEEE 802.3ad Dynamic link aggregation. Creates aggregation groups that share the same speed and duplex settings. Utilizes all slaves in the active aggregator according to the 802.3ad specification.

    Pre-requisites:
    1. Ethtool support in the base drivers for retrieving
    the speed and duplex of each slave.
    2. A switch that supports IEEE 802.3ad Dynamic link
    aggregation.
    Most switches will require some type of configuration
    to enable 802.3ad mode.

    mode=5 (balance-tlb)
    Adaptive transmit load balancing: channel bonding that does not require any special switch support. The outgoing traffic is distributed according to the current load (computed relative to the speed) on each slave. Incoming traffic is received by the current slave. If the receiving slave fails, another slave takes over the MAC address of the failed receiving slave.

    Prerequisite:
    Ethtool support in the base drivers for retrieving the
    speed of each slave.

    mode=6 (balance-alb)
    Adaptive load balancing: includes balance-tlb plus receive load balancing (rlb) for IPV4 traffic, and does not require any special switch support. The receive load balancing is achieved by ARP negotiation. The bonding driver intercepts the ARP Replies sent by the local system on their way out and overwrites the source hardware address with the unique hardware address of one of the slaves in the bond such that different peers use different hardware addresses for the server.

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