IPsec commands
IPsec commands are supported only when the switch is operating in FIPS mode. For more information
about FIPS mode, see Security Configuration Guide.
ah authentication-algorithm
Use ah authentication-algorithm to specify authentication algorithms for the AH protocol.
Use undo ah authentication-algorithm to remove all specified authentication algorithms for the AH
protocols.
Syntax
In non-FIPS mode:
ah authentication-algorithm { md5 | sha1 } *
undo ah authentication-algorithm
In FIPS mode:
ah authentication-algorithm sha1
undo ah authentication-algorithm
Default
AH does not use any authentication algorithm.
Views
IPsec transform set view
Predefined user roles
network-admin
Parameters
md5: Uses the HMAC-MD5 algorithm, which uses a 128-bit key.
sha1: Uses the HMAC-SHA1 algorithm, which uses a 160-bit key.
Usage guidelines
You can specify multiple AH authentication algorithms for one IPsec transform set, and the algorithm
specified earlier has a higher priority.
• For a manual IPsec policy, the first specified AH authentication algorithm takes effect. To make sure
an IPsec tunnel can be established successfully, the IPsec transform sets specified at both ends of the
tunnel must have the same first AH authentication algorithm.
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