I'm in the process of migrating from two Catalyst 6509s running CatOS to a pair of Nexus 7009s in a VPC domain. The current Cat 6509 environment is running PVST+ and the STP priority is 8192 for all vlans. The N7Ks are running Rapid-PVST+ with an STP priority of 40960 for all vlans. After connecting one of the Cat 6509's (switch 1) to both Nexus 7Ks via a VPC I see strange issues with STP. Both the 6509s STP configurations looks normal with Cat 6509 switch 1 being the root bridge. However if I run 'show spanningtree root' on each Nexus 7K, they are also both root bridges for all vlans (I have peer-switch configured) even though the priorities are set higher. The other strange problem is that only vlan 1 is trunking between the N7Ks and Cat 6509 switch 1, I can see that all vlans are trunking when I run 'show int trunk', the VPC is also up and happy.
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...