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Cisco uBR10k PRE5

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mbowe
Cisco uBR10k PRE5

Does anyone have experience with the PRE5 ?

Cisco website has hardware installation guides, but there are no configuration guides.

I don't have a uBR10k support contract any more, so couldn't hassle Cisco to provide me any information.

Information that I have discovered so far :

INTERFACE NAMING
=============
Each PRE5 has 4 x SFP+ ports for WAN backhaul

* Te0/0/0 - PRE-A, WAN backhaul 0
* Te0/0/1 - PRE-A, WAN backhaul 1
* Te0/0/2 - PRE-A, WAN backhaul 2
* Te0/0/3 - PRE-A, WAN backhaul 3

* Te0/1/0 - PRE-B, WAN backhaul 0
* Te0/1/1 - PRE-B, WAN backhaul 1
* Te0/1/2 - PRE-B, WAN backhaul 2
* Te0/1/3 - PRE-B, WAN backhaul 3

With 10G license you can unshut only ports 0
With 20G license you can unshut ports 0,1
With 30G license you can unshut ports 0,1,2
With 40G license you can unshut ports 0,1,2,3

B2B INTERFACE
==========
Each PRE5 has 4 x SFP+ ports for board-to-board (B2B) connection.
These are wired using short DAC cables.
Configuration happens automatically, there aren't any interfaces to configure or IPs to assign
DAC 0 links Te0/0/0 and Te0/1/0
DAC 1 links Te0/0/1 and Te0/1/1
DAC 2 links Te0/0/2 and Te0/1/2
DAC 3 links Te0/0/3 and Te0/1/3

You can check B2B status like this :
Router>show int ten0/0/0 b2b ?
counter B2B counters
status B2B link status

Also
Router#test cr10k5 show radian

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Now, I have some unsolved questions..... Can anyone please help me solve?

Cisco PRE5 datasheet says :
"Supports either load sharing or backup mode between the WAN backhaul interfaces on active and standby Cisco uBR10012 PRE5s.
Any pair of 10 Gigabit Ethernet interfaces can be configured as backup mode either on the same PRE5 or across PRE5s."

HOW TO CONFIGURE LOAD SHARING ?
=========================
If you had 20G license, would you put these interfaces into a port-channel :
* Te0/0/0
* Te0/0/1
* Te0/1/0
* Te0/1/1
CMTS would share traffic across these ports?
20G max throughput?
Is there any special CLI configuration required?

HOW TO CONFIGURE BACKUP MODE?
========================
If you had 20G license, would you put these interfaces into a port-channel :
* Te0/0/0
* Te0/0/1
* Te0/1/0
* Te0/1/1
Would CMTS would hold standby PRE ports down? How to enable that?
Or do you manually shut ports, add the "backup interface xxx" command to the backup ports, then unshut?