User`s manual

Sans Digital – EN104L+(B) Admin Guide
16
Network Setting – Port Bonding
Up to 4 Gigabit ports may be bonded using one of seven different bonding methods. Bonded ports provide higher throughput as well as
different level of fail-over.
Note: All bonded ports use the IP address and MAC address of the first port in the bond.
Bonded Port Pool lists the current team of bonding. It lists the Team#, IP Address and MAC address.
Unbonded Port Pool lists the available ports for bonding.
To bond ports
• From the Unbonded Port Pool, select the desired ports to bond.
• From the Bond Type, select the desired bonding method.
• Select Bond Ports.
• Ports will now show as a team, under Bonded Ports Pool.
NOTE: IP addresses for SFM ports are assigned internally. Therefore, instead of an IP address, you will only see “SFM” under IP address
section.
To remove bond
• From the Bonded Ports Pool, select the bonded team to remove.
• Select Remove Bond.
Bonding Type:
1. Round-Robin
Round-Robin policy: Transmit in a sequential order from the first available slave through the last. This mode provides load
balancing and fault tolerance.
2. 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.
3. XOR Balancing
XOR Balancing policy: Transmit based on an logical formula [ ( source MAC address XOR destination MAC address) * modular
slave count ]. This selects the same slave for each destination MAC address. This mode provides load balancing and fault tolerance.
4. Broadcasting
Broadcasting policy: Transmits everything on all slave interfaces. This mode provides fault tolerance.
5. 802.3ad
IEEE 802.3ad or Dynamic Link Aggregation: Creates aggregation groups that share the same speed and duplex settings. Transmits
and receives on all slaves in the active aggregator. It is also known as “Trunking”
Requirement:
A network switch that supports IEEE 802.3ad Dynamic Link Aggregation / Trunking, and the switch must be
configured to enable the “trunking” feature. An 802.3ad capable switch, but without configuring it will not work.
6. TLB
TLB or 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.
7. ALB
Adaptive Load Balancing: TLB + 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 server 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 clients use different hardware addresses for the server.