Leigh Anne Chisholm wrote: > > 1. See Priscilla's response first. > > 2. Your query wondering about what protocols other than Novell that can use > the 802.3 frame makes me wonder if you have misunderstood encapsulation. > Novell's encapsulations were developed prior to the IEEE finalizing their > standards. They're Novell-proprietary. > > To illustrate this point, if you set the IPX encapsulation type to be > novell-ether and you typed "show ipx interface ethernet 0", you'll see > "novell-ether" on the Ethernet 0 interface. However, if you type "show > interface ethernet 0", you'll see that the encapsulation is ARPA which is > different than the IPX encapsulation on that same interface. > The reason that "show int" only displays the IP encapsulation is the same reason that only the IP address (and mask) are displayed, not all layer three addresses -- history. The cisco (sic) product line started out as only an IP router, so all displays and config commands were understood to apply to IP. As bridging and other routed protocols were added, the old commands and displays remained the same for backward compatibility. E.G., the command to change encapsulation for IP is just "encapsulation __", not "ip encapsulation __". And even before IP really took off, it was needed for managing the routers (Telnet, etc.), even if the overall enterprise had no use for IP.
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