proxy-arp provides services for devices on that segment that do not have a default gateway. If you want to ensure the devices on that segment use the GLBP VIP address, then disabling proxy-arp will be recommended.
As for ip redirect, it has no correlation to GLBP but is a recommended security practice to disable it. If you disable ip redirect, the devices on that segment will always contact their default gateway (GLBP VIP) if more than one gateway exists on that segment.
If you forget to configure no ip proxy-arp under an interface, devices on that subnet with missing default gateway will be serviced by this interface.
If you have a workstation with IP 192.168.1.150 (missing its default gateway) and a switch with 192.168.1.1 with proxy-arp enabled, the switch will respond to arp queries from the workstation and route to other segments on the workstation's behalf.
This behavior will cause a lot of overhead in the switch and network as you rely on ARP for routing to other segments.
By disabling proxy-arp, the switch does not route the packet and the workstation gets a request time-out if the destination resides in another subnet.
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...