110

The lowest numbered port of the CrossLink is called the primary port. CrossLink software learns addresses differently than regular ports, as follows:

New source address. When a packet arrives at a CrossLink port with an unknown source address, the system module creates an entry in the master table and the port table for the CrossLink. The system module assigns the primary port in the CrossLink as the location of the address.

For additional source addresses, the system module assigns locations alternately to other ports in the CrossLink. When all ports in the CrossLink have at least one address assigned, the system module starts assigning from the primary port again.

New destination address. An unknown destination address packet is sent out on the primary ports of the CrossLink, but entries are not made in ports tables until a reply packet comes back. Entries in port tables depend upon the destination. See the description of primary ports on page 113.

Broadcast and multicast packets. Broadcast and multicast packets go to the primary port of each CrossLink.

Link failure. If one link in a CrossLink fails, a trap is sent and the entire CrossLink connection is disabled.

CrossFire 8600/8605 Token-Ring Switches v. 1.2, P/N: 710001641

Switch Configuration

Page 126
Image 126
Olicom 8605, 8600 manual 110