Specifications

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Cisco MGX 8260 Command Line Interface Guide
Release 1.2, Part Number 78-10987-01 Rev. B0, January, 2002
Chapter 3 Card Management
Configuration Tasks for Cards
Back Plane Mode
In the back plane mode, VoIP transmits and receives traffic from the DMC front card. The normal signal
flow when using a DMC card is:
DMC-BC -> DMC-FC -> Bus -> NSC-FC -> Bus -> SCC-FC -> SCC-BC
where BC = Back Card and FC = Front Card
Use the back plane mode when you use the NSC card in conjunction with a DMC card and DS3 lines.
No Back Card Mode
In the no back card mode, the NSC transmits and receives traffic from a SCC front card. The normal
signal flow in this case is:
NSC-FC -> Bus -> SCC-FC -> SCC-BC
where BC = Back Card and FC = Front Card
Use the no back card mode when using the NSC in conjunction with the SCC Fast Ethernet.
Configuring the NSC Interface Mode
You can only change the interface mode on an NSC while it’s in one of the following states:
• Active
• InBoot
• Mismatch
• Failed
To set the NSC interface mode, enter the chcdif command, specifying the card number and NSC
interface mode. Valid NSC interface mode settings are:
1: back card (default)
2: back plane
3. no back card
Note Configuring the back card mode with out a back card installed results in a card mismatch.
The system sets the specified interface mode on the target NSC card. The following example sets the
interface mode of card 13 to back plane:
chcdif 13 2
The card resets and reboots into backplane mode.
Setting the ATM Queue Profile
The ATM queue profile defines the queue behavior for the SCC card. You can only change the ATM
Queue profile on the active SCC.
To set the ATM queue profile, enter the chqprf command, specifying the slot number of the SCC card,
either 9 or 10, and the queue profile, a number from 1 to 10. Profile 1 is the default.
The system sets the specified queue profile on the target SCC card.