The standby group number has only significance for other standby-groups on the same segment/subnet. It is transmitted in a HSRP-specific multicast and so it does not cross a L3-boundary. Recipients are all HSRP-enabled routers on the same vlan AND in the same group. It is therefore allowed to use the same group-nr on all VLANs.
You need to use different group numbers only when you have more than one stanby-pair on the same subnet/segment/vlan.
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...