IBM SC30-3865-04 - Manual (Page 380)

This example also illustrates that the ELAN environment can be token-ring or
Ethernet or any mixture of LAN types.
NHRP in a Mixed Classical IP and ELAN Environment
The NHRP function in the router can operate with both Classic IP and ELAN
interfaces in the same network. In this example, the NHRP client supports the IBM
extensions and can shortcut directly to the LEC destination for traffic in that
direction.
Figure 31. NHRP in an ELAN Environment with LAN Switches
Using NHRP
350 MRS V3.2 Protocol Config Ref Vol 2