Serial subinterface

[kkalaycioglu]

Hello,

I can create subinterfaces on serial interfaces with default HDLC encapsulation (without keywords poiny-to-point or point-to-multipoint used with the FR subinterfaces). What are possible usages of this configuration?

Best Regards.

[pbarman]

When you want to create secondary addresses, rather than using command "ip address secondary", use these sub-interfaces. You may need secondary address on an interface for instance when you want to overcome discontiguous subnet problems, in classful routing protocols.

I havenot seen any implementations of these sub-interfaces in any design though.

Thanks.