This document shows how to display and change the VPI/VCI values for the Cisco 675 Customer Premises Equipment (CPE).
There are no specific requirements for this document.
This document is not restricted to specific software and hardware versions.
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The default values are VPI=1 and VCI=1, and these settings much match the values configured on the Internet Service Provider's digital subscriber line access multiplexer (DSLAM) on the subscriber side.
Note: Not all versions of the Cisco 675 software have a default of VPI=1 and VCI=1. Also, in Cisco Broadband Operating System (CBOS) version 2.3 or earlier, the VPI count is 1 to 4. In later versions, the VPI count is 1 to 8. Upgrade to release 2.3.9 or later if you have problems configuring the VPI/VCI values. The valid ranges for VPI and VCI addresses are shown in this table:
|VPI <count>||VPI Range||VCI Range|
In order to display the current VPI/VCI values for the Cisco 675:
cbos#show int wan0-0 WAN0-0 ATM Logical Port PVC (VPI 1, VCI 1) is open. !--- the default value of 1/1 ScalaRate set at 1088 Kbps AAL 5 UBR Traffic PPP LCP State: Opened PPP NCP State (IP Routing): Opened PPP MRU: 2048 HDLC Framing: disabled MPOA Mode: VC Mux PPP Login: cisco Authentication Type: Autodetecting/PAP RADIUS: disabled PPP Tx: 145866 Rx: 145776 Dest IP: 10.1.1.1 Dest Mask: 255.255.255.255 IP Port Enabled
In order to change the VPI/VCI values, complete these steps:
Shut down the WAN0-0 interface.
cbos#set int wan0-0 close Closing connection wan0-0
Verify that the interface is shut down.
cbos#show int wan0-0 WAN0-0 ATM Logical Port PVC (VPI 1, VCI 1) is configured. !--- note that it does not say "is open" ScalaRate set at 1088 Kbps AAL 5 UBR Traffic IP Port Enabled
Change the values.
cbos#set int wan0-0 vpi 2 !--- new value Change completed. cbos#set int wan0-0 vci 34 !--- new value Change completed. cbos#set int wan0-0 open !--- opens the WAN interface
Verify the changes.
cbos#show int wan0-0 WAN0-0 ATM Logical Port PVC (VPI 2, VCI 34) is configured. !--- new values (will not !--- be in open state until a reboot) ScalaRate set at 1088 Kbps AAL 5 UBR Traffic IP Port Enabled cbos#show run [[ PPP Device Driver = Section Start ]] PPP Port User Name = 00, tito PPP Port User Password = 00, dayans [[ IP Routing = Section Start ]] IP Port Address = 00, 10.1.1.2 [[ CBOS = Section Start ]] NSOS Prompt = 4/33 NSOS Serial More = 20 [[ ATM WAN Device Driver = Section Start ]] ATM WAN Virtual Connection Parms = 00, 2, 34, 0 !--- new values
Issue write and reboot commands to the Cisco 675.
cbos#write NVRAM written. cbos#reboot Hello! Expanding CBOS image... CBOS v2.2.0.000
Note: The WAN0-0 interface was closed before the VPI/VCI values were changed. For it to be functional, you need to open it. When both the write and reboot commands are issued on the Cisco 675, the WAN0-0 interface is automatically opened.
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