Diffrence between ATM encapsulation aal5snap and aal5mux ip

[ajay chauhan]

actually one site is having STM-1 ATM connectivity and others sites having ATM e1 connectivity.All the VCs are using aal5snap except one which use aal5mux ip.

can you please clear my doubt is there any specific reason to use aal5mux ip.

[s.jankowski]

aal5mux means ATM Adaptation Layer 5 Multiplexed Encapsulation (Cisco). It supports only one layer-3 protocol per VC The

reason is that the receiver must be able to de-multiplex packets to different layer-3 stacks. Without extra information in the AAL5 frame, indicating the layer-3 protocol, layer-2 at the receiver can not distinguish packets from different layer-3 protocols.

[Rolitto]

Thanks for the clear explanation.