Technical data
Working with Link Aggregation
Check Point VSX Administration Guide NGX R67 | 133
2. The bond initiates failover to a standby interface. Since this is a failover within the bond, the status of the
other cluster member is unaffected.
3. If the standby interface continues to detect a link failure, and the initial interface is still down, failover to
other cluster members occurs.
CCP Initiated Failover
CCP failover occurs only when other cluster members are not down, in the following sequence.
1. ClusterXL detects a problem sending or receiving of CCP packets.
2. ClusterXL initiates an internal bond failover.
3. ClusterXL monitors CCP packet transmission and reception. If additional problems are detected within
three minutes, the system initiates a failover to another cluster member.
Failover Support for VLANs
ClusterXL monitors VLAN IDs for connectivity failure or miscommunication, and initiates failover when
necessary. By default, both the highest and the lowest VLAN IDs are monitored for failure. This is done by
sending ClusterXL Control Protocol (CCP) packets on round-trip paths at a set interval. The following figure
illustrates an interface bond supporting multiple VLANs.
You can optionally configure VSX to Monitor all VLANs.
Figure 8-30 Interface Bonding with VLANS
When a failure is detected, a log of the failure is recorded in SmartView Tracker.
Monitoring the Highest and Lowest VLAN IDs
By default, the highest and lowest VLAN IDs indicate the status of the physical connection. these VLAN IDs
are always monitored and a connectivity failure in either initiates a failover. In most deployments this is the
desired setting, as it supports the primary purpose of the feature (detecting a connectivity failure) and the
traffic generated on the network is light. However, this setting will not detect a VLAN configuration problem
on the switch.
Bond Interface & Interface Limitations
You can define a maximum of 4096 interfaces on a SecurePlatform machine. The total number of bond
interfaces in use is the sum of bonds plus the number of slave interfaces contained in each bond.