Technical data

Working with Link Aggregation
Check Point VSX Administration Guide NGX R67 | 132
In this scenario:
Member-1 and Member-2 are cluster members in the High Availability mode
S-1 and S-2 are switches
C-1, C-2, C-3 and C-4 are network connections
Load Sharing Overview
Load sharing provides the ability to spread traffic over multiple slave interfaces, in addition to providing
interface redundancy. All interfaces are always active. While Load Sharing has the advantage of increasing
throughput, it requires connecting all interfaces to a single switch and cannot provide switch redundancy.
Traffic is balanced between interfaces in a manner similar to the way load sharing balances traffic between
cluster members. Load sharing operates according to either the IEEE 802.3ad or the XOR standard.
In Load Sharing mode, each individual connection is assigned to a specific slave interface. For a specific
connection, only the designated slave interface is active. In the event of a failure of the designated slave
interface, the traffic fails over to another interface, adding that connection's to the traffic it is already
handling.
Bond Failover
Either of the following failure scenarios can induce bond failover:
An active interface detects a link state failure in another monitored interface
ClusterXL detects a failure in sending or receiving Cluster Control Protocol (CCP) keep-alive packets
Either of these occurrences will induce a failover, either to another slave interface within the bond, or
between cluster members, depending on the circumstances. Refer to Configuring Failover Mode in the
R75.20 ClusterXL Administration Guide
(http://supportcontent.checkpoint.com/documentation_download?ID=12265) for details.
The following sections describe the types of failover processes.
Note - The bond failover operation requires a network interface card
that supports the Media-Independent Interface (MII) standard.
Link State Initiated Failover
Link-state initiated failover occurs in the following sequence:
1. The active slave interface detects a down link state.