3Com Router 3000 Ethernet FamilyConfiguration Guide Chapter 4 Logical Interface Configuration3Com Corporation4-10# Assign the VC assigned with DLCI 50 to the subinterface.[3Com-Serial0/0/0.1] fr dlci 50# Create the subinterface Serial 0/0/0.2 on Serial0/0/0 on Router A, specify it to work inpoint-to-point mode, and enter its view.[3Com-Serial0/0/0.1] interface serial 0/0/0.2 p2p# Assign the IP address 202.38.161.1 to the subinterface, given the mask is255.255.255.0.[3Com-Serial0/0/0.2] ip address 202.38.161.1 255.255.255.0# Assign the VC assigned with DLCI 60 to the subinterface.[3Com-Serial0/0/0.2] fr dlci 60[3Com-Serial0/0/0.2] quit# Configure the static routes from Router A to LAN2 and LAN3.[3Com] ip route-static 129.10.0.0 255.255.0.0 202.38.160.2[3Com] ip route-static 129.11.0.0 255.255.0.0 202.38.161.2The configurations of Router B and Router C are omitted.4.5 MP-Group and MFRRefer to the “Link Layer Protocol” part of this manual.4.6 Logical Channel of Backup Center4.6.1 Introduction to Logical Channel of Backup CenterIn addition to providing the backup between interfaces, the backup center allows anX.25 or FR VC to work as the master interface or standby interface of the backup center.For more information about the backup center, refer to V 2.41 Operation Manual -Reliability.To make the configuration easier, you can specify a logical channel for the VCdiscussed above, and then configure the operating parameters of the backup center onthe logical channel.4.6.2 Configuring a Backup Center Logical ChannelRefer to the “Reliability” part of this manual.4.7 Virtual-Template and Virtual Interface4.7.1 Introduction to Virtual-Template and Virtual InterfaceVirtual-Template is a template for configuring a virtual interface. It is primarily applied inthe application environments like VPN and MP.
