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source-prefix-ipv6 (IDS)


Hierarchy Level


Specify the prefix length for source IPv6 address aggregation for the IDS rule. This applies session limits to an aggregation of all attacks from within a subnet of the specified length.

For example, if you configure a value of 64 for source-prefix-ipv6, then attacks from 2001:db8:1234:72a2::2 and 2001:db8:1234:72a2::3 are counted as attacks from the 2001:db8:1234:72a2::/64 subnet. However, if a single host on a subnet generates a large number of network probing or flooding attacks, the flows for the entire subnet might be stopped.


prefix-value—Integer value.

  • Range: 1 through 128

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 8.5.