I am looking to restructure the LAN over xmas, and have designed a collapsed core topology. In the distribution layer, we have two 3550's with the emi image. At the access layer which services all 3 floors in our building, we have 2950's linked to both 3550's in the dist layer. On each access switch connecting to the dist layer, I am running uplink fast and this works well. I am also running backbone fast on all switches in the vtp domain. On the two 3550's in the dist layer, I am routing between vlans and running hsrp for all vlans. Having tested this in the lab, If a switch in the dist layer dies there is no disruption to service. The only potential 30 second disruption to service I have noticed is when the gig link between the two dist layer switches is unplugged. There is a 30 second delay whilst stp recalculates.
Just wondering if there was any way of getting around this, It tends to be 30 seconds when you unplug and 30 seconds when you plug in.
One other thing, in the access layer wiring closets, I have 4 or 5 switches in each, and will create a loop for resiliance. Again with this senario, there is a 30 second delay, is there any way of speeding this up.
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...