Subject: [Tsvwg] Problem with using Tie-Tags in Table 2 of RFC4960

From: BlackHorse <[email-masked]>
Date: Wed, 29 Oct 2008 15:31:11 +0800

Dear Sirs,I have a problem with using Tie-Tags for Handling of a COOKIE ECHO when a TCB Exists in  RFC4960.We first see the Table 2 in page 68 of RFC 4960 . +------------+------------+---------------+--------------+-------------+|  Local Tag | Peer's Tag | Local-Tie-Tag |Peer's-Tie-Tag|   Action/   ||            |            |               |              | Description |+------------+------------+---------------+--------------+-------------+|    X       |     X      |      M        |      M       |     (A)     |+------------+------------+---------------+--------------+-------------+|    M       |     X      |      A        |      A       |     (B)     |+------------+------------+---------------+--------------+-------------+|    M       |     0      |      A        |      A       |     (B)     |+------------+------------+---------------+--------------+-------------+|    X       |     M      |      0        |      0       |     (C)     |+------------+------------+--------------
 -+--------------+-------------+|    M       |     M      |      A        |      A       |     (D)     |+======================================================================+|       Table 2: Handling of a COOKIE ECHO when a TCB Exists           |+======================================================================+   Legend:      X - Tag does not match the existing TCB.      M - Tag matches the existing TCB.      0 - No Tie-Tag in cookie (unknown).      A - All cases, i.e., M, X, or 0.   Note: For any case not shown in Table 2, the cookie should be silently discarded. There is a "0" in second column of the third case. The Table's legend explains the "0". Can we think that the Peer's Tag in cookie is zero(or unknow)? Can we think that the Local-Tie-Tag or the Peer's-Tie-Tag in cookie is zero(or unkonw)? I'm not sure the question. Please give your answer and explain.Thank you very much! Best regards!Shengcai Zheng

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