Difference between revisions of "Flowire CCo"
From Zenitel Wiki
| (5 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
| − | One of the Flowires in a cluster must be '''CCo''' - '''Central Coordinator'''. CCo is essentially a bus master. By default the Flowires automatically negotiate | + | One of the Flowires in a cluster must be the '''CCo''' - '''Central Coordinator'''. CCo is essentially a bus master. By default, the Flowires automatically negotiate among themselves who is to be CCo. |
| − | By '''cluster''' we mean Flowires on a physical bus that share NMK - Network Membership Key. If several NMKs are used, each "NMK-group" will | + | By '''cluster''' we mean Flowires on a physical bus that share an NMK - Network Membership Key. If several NMKs are used, each "NMK-group" will be a cluster with its own CCo. (The Homeplug term for cluster is AVLN.) |
| − | But if there | + | But if there are more than two Flowires in a cluster, it can make a difference which Flowire is the CCo. If the CCo Flowire is lost, then the communication in the whole cluster will stop for several seconds until a new CCo is agreed upon. Therefore it is best that a network-side Flowire is CCo, so that an endpoint-side Flowire out in the field can be lost without affecting the rest of the cluster. |
| − | For point-to-point link between two Flowires it does not matter. | + | For point-to-point link between two Flowires, it does not matter. |
| + | |||
| + | {{note|In mixed cluster with both FCDC3 and FCDC1/2, FCDC1/2 should be set as "Not CCo", and one FCDC3 must be set as "CCo".}} | ||
==Configured PLC Role== | ==Configured PLC Role== | ||
| − | Since Flowire SW version '''4.1.3.10''' it is possible to configure CCo mode | + | Since Flowire SW version '''4.1.3.10''' it is possible to configure CCo mode under the section "Configured PLC Role" in the device web interface. |
There is a choice between three modes: | There is a choice between three modes: | ||
| − | * '''auto''': Default - Negotiate who to | + | * '''auto''': Default - Negotiate who is to be CCo. |
| − | * '''CCo''': Force this Flowire | + | * '''CCo''': Force this Flowire to be CCo. Only one Flowire in the cluster can be forced to be CCo! |
| − | * '''not CCo''': This Flowire is never CCo. | + | * '''not CCo''': This Flowire is never the CCo. |
| − | If you select one of the Flowires as forced CCo, <u>then all the | + | If you select one of the Flowires as forced CCo, <u>then all the others in the cluster must be set as '''not CCo'''!</u> |
'''Guideline:''' | '''Guideline:''' | ||
| Line 22: | Line 24: | ||
* Set endpoint-side Flowires as '''not CCo''' | * Set endpoint-side Flowires as '''not CCo''' | ||
* If there is only one Flowire in the cluster connecting to the network, set it as forced '''CCo''' | * If there is only one Flowire in the cluster connecting to the network, set it as forced '''CCo''' | ||
| − | * If there are two redundant | + | * If there are two redundant Flowires connecting to the network (using RSTP), leave them as '''auto''' |
[[Category: Flowire]] | [[Category: Flowire]] | ||
Latest revision as of 12:40, 12 May 2020
One of the Flowires in a cluster must be the CCo - Central Coordinator. CCo is essentially a bus master. By default, the Flowires automatically negotiate among themselves who is to be CCo.
By cluster we mean Flowires on a physical bus that share an NMK - Network Membership Key. If several NMKs are used, each "NMK-group" will be a cluster with its own CCo. (The Homeplug term for cluster is AVLN.)
But if there are more than two Flowires in a cluster, it can make a difference which Flowire is the CCo. If the CCo Flowire is lost, then the communication in the whole cluster will stop for several seconds until a new CCo is agreed upon. Therefore it is best that a network-side Flowire is CCo, so that an endpoint-side Flowire out in the field can be lost without affecting the rest of the cluster.
For point-to-point link between two Flowires, it does not matter.
|
In mixed cluster with both FCDC3 and FCDC1/2, FCDC1/2 should be set as "Not CCo", and one FCDC3 must be set as "CCo". |
Configured PLC Role
Since Flowire SW version 4.1.3.10 it is possible to configure CCo mode under the section "Configured PLC Role" in the device web interface.
There is a choice between three modes:
- auto: Default - Negotiate who is to be CCo.
- CCo: Force this Flowire to be CCo. Only one Flowire in the cluster can be forced to be CCo!
- not CCo: This Flowire is never the CCo.
If you select one of the Flowires as forced CCo, then all the others in the cluster must be set as not CCo!
Guideline:
- Set endpoint-side Flowires as not CCo
- If there is only one Flowire in the cluster connecting to the network, set it as forced CCo
- If there are two redundant Flowires connecting to the network (using RSTP), leave them as auto