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RE: Two week Last Call on LMP (Sections 12.3.3 and 12.3.4)
Looking at the Data Link FSMs in Sections 12.3.3 and 12.3.4 of
draft-ietf-ccamp-lmp-02.txt:
1) It appears that in the Down state, the control channel can be either
up or
down. That being the case, there should be transitions for events 1
:evCCUp:
and 2 :evCCDown: from Down to Down.
2) Transition 10:evLnkDealloc: from Deg to Down would appear to be
impossible,
as there is no control channel available, and the control channel is
required to coordinate taking the channel down at both ends. I believe
this
transition should be removed.
With these changes, the FSMs would look like:
12.3.3. Active Data Link FSM Description
Figure 5 illustrates operation of the LMP active data link FSM in a
form of FSM state transition diagram.
1,2
+------+
| |
| +------+
+-->| |<-------+
+--------->| Down | |
| +----| |<-----+ |
| | +------+ | |
| |5b 3| ^ | |
| | | |2,7 | |
| | v | | |
| | +------+ | |
| | | |<-+ | |
| | | Test | |11 | |
| | | |--+ | |
| | +------+ | |
| | 5a| 3^ | |
| | | | | |
| | v | | |
|2,12 | +---------+ | |
| +-->| |14 | |
| | Up/Free |----+ |
+---------| | |
+---------+ |
9| ^ |
| | |
v |10 |
+-----+ 2 +---------+ |
| |<--------| |13 |
| Deg | |Up/Alloc |------+
| |-------->| |
+-----+ 1 +---------+
Figure 5: Active LMP Data Link FSM
12.3.4. Passive Data Link FSM Description
Figure 6 illustrates operation of the LMP passive data link FSM in a
form of FSM state transition diagram.
1,2
+------+
| |
| +------+
+-->| |<------+
+---------->| Down | |
| +-----| |<----+ |
| | +------+ | |
| |5b 4| ^ | |
| | | |2,8 | |
| | v | | |
| | +----------+ | |
| | | PasvTest | | |
| | +----------+ | |
| | 6| 4^ | |
| | | | | |
| | v | | |
|2,12 | +---------+ | |
| +--->| Up/Free |14 | |
| | |---+ |
+----------| | |
+---------+ |
9| ^ |
| | |
v |10 |
+-----+ +---------+ |
| | 2 | |13 |
| Deg |<--------|Up/Alloc |-----+
| |-------->| |
+-----+ 1 +---------+
Figure 6: Passive LMP Data Link FSM
Regards,
George R. Young
edgeflow Inc.
329 March Rd., Kanata, ON, Canada, K2K 2E1
phone: +1 613-270-9279 Ext 287
fax: +1 613-270-9268
>-----Original Message-----
>From: Kireeti Kompella [mailto:kireeti@juniper.net]
>Sent: Monday, November 12, 2001 9:00 PM
>To: ccamp@ops.ietf.org
>Subject: Two week Last Call on LMP
>
>
>Hi All,
>
>This is to announce a two week Last Call on the LMP draft:
>draft-ietf-ccamp-lmp-02.txt. This Last Call ends COB Wed Nov 28.
>
>Please send questions, comments and requests for clarifications
>to the CCAMP list.
>
>Kireeti.
>
>