Each switch will make a forwarding decision based on an algorithim that examines the src- MAC, dst-MAC or src-dst MAC of the frame that needs to be forwarded. The same options exist for IP addresses and ports. Depending on the bits that are examined, the switch will forward the frame accordingly. For example, if 2 switches use 4 links between them, they may be numbered as 00, 01, 10, 11. If the application of the algorithim being used on the switch yields, say, 01, then the switch will use that link (the second one) to forward the frame. Therefore, you can see that this can be pretty arbitrary.
What is your requirement? Why do you need symmetric routing in this instance?
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...