MPLS
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Supports MD5 authentication algorithm for subnet level configuration (ACX Series, PTX Series, and QFX Series)—Starting from Junos OS Evolved 22.1R1 Release, MD5 authentication algorithm for subnet level key configuration is supported for all Junos OS Evolved platforms. Whereas, aes-128-cmac-96 and hmac-sha-1-96 algorithms are not supported for subnet level key configuration in Junos OS Evolved Releases.
[See session-group and Configuring the TCP MD5 Signature for LDP Sessions.]