Modifications to an existing VAS filter are applicable to all hosts using that VAS filter.
Adding filter entries is always possible and the new entry is considered on the next filter application at flow creation. Existing flows are not re-evaluated against the modified filter.
Removing filter entries is only possible when the filter entry is shut down.
Modifying the match criteria on a filter entry is only possible when the filter entry is shut down.
Adding or removing a filter entry action is only possible when the filter entry is shut down.
Modifying an existing filter entry’s action is always possible and takes effect immediately for all flows currently matched against that filter entry action.
When a filter entry is shut down, all flows matched against any of the filter entry actions is killed. The clear subscriber-mgmt isa-service-chaining vas-filter filter-name command can be executed to clear all flows of all hosts associated with the filter. This command can be used if all flows needing re-evaluation against a modified set of matching criteria.
A maximum of 512 VAS filters with up to 64 entries per filter are supported.