CARD: Timeout and retransmission of signaling messages
Marco Liebsch <[email protected]> Fri, 10 Oct 2003 18:22:43 +0200
| Newsgroups | gmane.ietf.seamoby |
|---|---|
| Organization | NEC Europe Ltd. |
| Message-ID | <[email protected]> |
"...The timeout values in MN -AR resending and AR-AR resending make AR-AR resending overlap: If a message is lost between AR and CAR, both MN and AR will resend it at the same time. Based on the discussion about AR-AR resending, I understood that its purpose was to decrease the amount of over-the-air messages, if a message is lost in the fixed network. Now this does not happen. To fix this, change the values for resending, so that MN_AR_CARD_TIMEOUT > AR_AR_CARD_TIMEOUT * MN_AR_CARD_RETRIES. This should IMO be done by decreasing the AR_AR timeout and amount of retries to avoid problems with MN noticing messages lost between MN and AR slowly." Shouln't the algorithm be MN_AR_CARD_TIMEOUT > AR_AR_CARD_TIMEOUT * AR_AR_CARD_RETRIES...? Proposal for costants: MN_AR_CARD_TIMEOUT: keep 1 sec. MN_AR_CARD_RETRIES: keep 5 AR_AR_CARD_TIMEOUT: 300 ms AR_AR_CARD_RETRIES: 2 Any comments? marco