tmnxOamBuildPktIPsecAuthCtlEntry contains the definition of one IPsec Authentication Header used by the OAM Egress Finder. Fields that influence the routing by SROS of a packet containing an IPsec Authentication Header (e.g. Security Parameters Index (SPI)) are present. The other IPsec Authentication Header fields (e.g. Sequence Number) are absent. A row is created by SROS when: 1. tmnxOamBuildPktHdrType is set to 'ipsecAuth', OR 2. A tmnxOamBuildPktHdrOvrCtlTable table row is created with a tmnxOamBuildPktHeaderNum index which refers to a header with type 'ipsecAuth'. A row is destroyed by SROS when: 1. A tmnxOamBuildPktHdrCtlTable row with tmnxOamBuildPktHdrType = 'ipsecAuth' is destroyed, OR 2. A tmnxOamBuildPktHdrOvrCtlTable row which refers to a header with type 'ipsecAuth' is destroyed. A row created using creation clause 1, above, has the index object tmnxOamBuildPktNumOrZero=0. The zero indicates the IPsec Authentication Header is a base definition (not an override). A row created using creation clause 2, above, has tmnxOamBuildPktNumOrZero set to the tmnxOamBuildPktNum index of the parent tmnxOamBuildPktHdrOvrCtlTable row. The following example values for this table show the definition of a base SPI field for header 1, and two overrides. Pkt Num Or Zero Header Num SPI 0 1 4123456789 10 1 4123456790 255 1 4123456791