Nokia M1122, T66280 user manual Choosing the VCC2 for tunneling example

terminates the tunnel and all data from that terminated local PPTP tunnel will be forwarded to an assigned ATM VCC by using PPP over AAL5 encapsulation. Thus, each local PPTP tunnel requires an equivalent ATM VCC assigned to it restricting the total number of local PPTP hosts to 8.

Local tunneling is used when there is a need to have one or more computers connected independently to different networks. For example, in remote work application, the rest of the family may be using the common ISP services and one or two family members need to gain access to their corporate networks. With local tunneling, these remote workers may be connected to a different network than the rest of the users.

Local tunneling is activated using the PPTP client running, for example, in Windows The destination IP address must be M1122 LAN/VBRIDGE IP address depending on the configuration. PPP packets within PPTP are mapped to the configured VCC. M1122 has three different ways to choose the ATM VCC that will be used for tunneling:

DAutomatic, chooses the first free VCC

DChooses the VCC number using C:number, where number is from 1 to 8. C:number is fed after the M1122 IP address (see Figure 16).

DChooses the VCC number using N:name, where name is the VCCx description. N:name is fed after the M1122 IP address.

Figure 16 Choosing the VCC2 for tunneling example

C33906002SE_00 E Copyright Nokia Networks Oy 21