One Comment on “Which authentication method secures IS-IS hello, link-state, and sequence number PDUs?”

1. Dylan says:

   November 24, 2014 at 3:51 am

   http://inetzeroblog.com/isis-training-and-junos-configuratio/

   A is correct

   ISIS authentication:

   Junos allows a per level authentication and a per PDU authentication. The ISIS authentication uses a TLV (TLV 10) to conveys either a Simple Password in plain-text or a digest message (HMAC MD5). When the TLV is present within a PDU: IIH, CSNP, PSNP, LSP a router has to check the simple password or the message integrity (with the HMAC) before it takes into account the PDU.

   See config of isis-interface-level-authentication here

   https://www.juniper.net/techpubs/en_US/junos14.2/information-products/topic-collections/junos-xml-ref-oper/index.html?jd0e840095.html

   
   
   
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