US 7,463,579 B2
Routed split multilink trunking
Roger Lapuh, Uesslingen (Switzerland); and Tamiji Homma, Mountain View, Calif. (US)
Assigned to Nortel Networks Limited, St. Laurent, Quebec (Canada)
Filed on Jul. 11, 2003, as Appl. No. 10/618,136.
Prior Publication US 2005/0007951 A1, Jan. 13, 2005
Int. Cl. G01R 31/08 (2006.01); G06F 3/00 (2006.01); H04L 12/28 (2006.01)
U.S. Cl. 370—216  [370/400; 710/38] 17 Claims
OG exemplary drawing
 
7. A system comprising:
an Inter Switch Trunk (IST) link;
a first aggregation device coupled to the IST link, the first aggregation device comprises a first set of ports, first processing logic coupled to the first set of ports, and a first memory element coupled to the first processing logic, the first memory element including a routing table that comprises a first set of media access control (MAC) records, each MAC record of the first set of MAC records includes a routing bit that, when set to a first logical value, allows routing of that MAC record from the first set of ports over the IST link and when set to a second logical value, does not allow routing of that MAC record over the IST link; and
a second aggregation device coupled to the IST link, the second aggregation device to obtain the first set of MAC records for use by one or more local routing instances for a Layer 3 (L3) networking protocol within the second aggregation device,
wherein the first aggregation device and the second aggregation device are routed split multilink trunking (RSMLT) enabled.