Cisco 3825 Software Configuration Guide - Page 23

Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router New Features in Cisco IOS Release 12.4(16)MR2 Figure 1-5 Example of Cisco 3825 Router VWIC and NM-2W Configuration Options Block Diagram GSM • VWIC-2T1/E1-RAN used for T1/E1 • *MUST* reside in one of four WIC slots to traverse HDLC Ctrl (8 GSM E1 max) UMTS • VWIC-2T1/E1-RAN used for T1/E1 • VWIC FPGA unused for UMTS • Direct routing to AIM-ATM IP • VWIC-2T1/E1-RAN used for T1/E1 • VWIC FPGA unused for IP • Direct routing to IOS CPU AIM-ATM-8 Module on Motherboard NM - 2W RAN WIC RAN WIC NM - 2W RAN WIC RAN WIC UMTS lub IP UMTS lub IP IOS CPU HDLC Ctrl RAN WIC RAN WIC RAN WIC RAN WIC UMTS lub UMTS lub IP GSM Abis 280206 New Features in Cisco IOS Release 12.4(16)MR2 With Cisco IOS Release 12.4(16)MR2, the Cisco MWR 1941-DC-A router supports the following feature: • Keyword ignore-vpi-vci Added to xconnect Command, page 1-13 Keyword ignore-vpi-vci Added to xconnect Command With the ignore-vpi-vci keyword configured, the MWR ignores the VPI/VCI value in the PW packet and does a blind rewrite with the local configured AC-side PVC's VPI/VCI value. This applies only when the xconnect command is configured under the PVC, which is the N:1 with N=1 special case. It does not apply when the xconnect command is configured under the subinterface, which supports N>1. The xconnect command with keyword ignore-vpi-vci results in the PVC mapping being done in a cooperative way if the MWR works the same way as the receiving router. Without this command, the MWR checks the VPI/VCI value inside PW packet for matches against the local configured PVC or PVC-mapping. With the ignore-vpi-vci keyword configured, the MWR ignores the VPI/VCI header inside the received PW packet and does a blind rewrite with the local configured AC-side PVC's VPI/VCI value. New Features in Cisco IOS Release 12.4(16)MR1 With Cisco IOS Release 12.4(16)MR1, the Cisco 3825 router supports the following: OL-15667-03 Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide 1-13