Product specifications

Chapter 2: Product Overview Efficient Networks
®
Router family
Technical Reference Guide
Page 2-12 Efficient Networks
®
RFC 1483 or RFC 1490
Bridging
User data packets are prepended by the sequence 0xAAAA0300 0x80c20007 0x0000
followed by the Ethernet frame containing the packet.
802.1D Spanning Tree packets are prepended with the header 0xAAAA0300
0x80C2000E.
Routing
IP packets are prepended with the header 0xAAAA0300 0x00000800.
IPX packets are prepended with the header 0xAAAA0300 0x00008137.
MAC Encapsulated Routing: RFC 1483MER (ATM)
or RFC 1490MER (Frame Relay)
MER encapsulation allows IP packets to be carried as bridged frames, but does not
prevent bridged frames from being sent as well, in their normal encapsulation format:
RFC 1483 (ATM) or RFC 1490 (Frame Relay).
If IP routing is enabled, then IP packets are prepended with the sequence
0xAAAA0300 0x80c20007 0x0000 and sent as bridged frames. If IP routing is not
enabled, then the packets appear as bridged frames.
FRF8
IP packets have prepended to them the following sequence: 0x03CC.
NOTE:
This protocol allows sending ATM over Frame Relay.
rawIP
IP packets do not have any protocol headers prepended to them; they appear as IP
packets on the wire. Only IP packets can be transported since there is no possible
method to distinguish other types of packets (bridged frames or IPX).
NOTE:
This protocol allows sending ATM over Frame Relay.