The following was reported by Andy Malis 

Eleven companies responded to the call for RFC 1293 and 1490 implementation 
experience. Of the eleven, three asked that their information not be made public, and their 
responses have been summarized for informational purposes only. I will first list the RFC 
1293 responses, and then the RFC 1490 responses. Thanks to all those that sent in 
responses.

Companies are listed in alphabetical order.

RFC 1293: 

Ascend 
Missing features: none 
Interworked with: Cisco, Bay, 3Com 

Assured Access 
Missing features: none 
Interworked with: Cisco 

Bay Networks 
Missing features: none 
Interworked with: Cisco, 3Com 

Cabletron Systems Inc 
Missing features: none 
Interworked with: Cisco 

Cisco 
Missing features: none 
Interworked with: "quite a few" 

Motorola 
Missing features: implementation responds to InARP requests, but does not generate 
requests 
Interworked with: Cisco, Bay, 3Com 

Sync Research 
Missing features: none 
Interworked with: Sync, Cisco, IBM, 3Com, Bay, Xyplex, "and others" 

Xylan 
Missing features: none 
Interworked with: IBM (2210), Cisco (2500, 7000 series and other routers), Bay (Access 
Node and other routers), NSC (Borderguard), ACC (Nile) 

Of the other three respondents, two of the implementations were complete, and the other 
was a subset due to the fact that it is not a full router. Two reported interoperability with 
Cisco, one with ACC, and one with Bay.