Now when you should turn them off is more of security thing. In theory they can be used for man in the middle attacks but the ones the router itself sends are not a problem. It is more that some people do not want to see any.
Now because of this possible security issue many of the TCPIP stacks on end user machines ignore icmp redirect messages. In these cases you are just wasting bandwidth sending them since they are ignored.
Unless you feel you have a issue they more than likely do more good than harm. In the most simple setup where there is only a single exit point from a subnet they will never be send anyway.
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...