14 – Command ReferenceGroup59183-02 A 14-29ATable 14-2. Port Group Member AttributesAttribute DescriptionMember Worldwide port name (WWPN) for the N_Port device that wouldattach to the switch. A member cannot belong to more than onegroup. All loop device WWPNs must be included in the group, other-wise the switch port will be downed, and none of the devices will beable to log in.Authentication Enables (CHAP) or disables (None) authentication using the Chal-lenge Handshake Authentication Protocol (CHAP). The default isNone.Primary Hash The preferred hash function to use to decipher the encrypted Pri-mary Secret sent by the Port group member. The hash functions areMD5 or SHA-1. If the Port group member does not support the Pri-mary Hash, the switch will use the Secondary Hash.Primary Secret Hexadecimal string that is encrypted by the Primary Hash forauthentication with the Port group member. The string has the fol-lowing lengths depending on the Primary Hash function: MD5 hash: 16-byte SHA-1 hash: 20-byteSecondary Hash Hash function to use to decipher the encrypted Secondary Secretsent by the Port group member. Hash values are MD5 or SHA-1.The Secondary Hash is used when the Primary Hash is not avail-able on the Port group member. The Primary Hash and the Second-ary Hash cannot be the same.SecondarySecretHex string that is encrypted by the Secondary Hash and sent forauthentication. The string has the following lengths depending onthe Secondary Hash function: MD5 hash: 16-byte SHA-1 hash: 20-byte