Why does the 3500 switch send out a gratuitous arp reply to broadcast(all FF's dest.) when you perform the copy tftp: flash: command or the copy tftp: running-config command? When you perform the copy running-config tftp: command it does not send the gratiutous arp reply to broadcast. Also, why would the 3500 put the broadcast address in the arp target hardware portion of the frame instead of it's own mac address?
I don't know why a gratuitous ARP is sent when transferring from a TFTP server, but gratuitous ARP packets typically use the broadcast address in the destination hardware address portion of the packet. Normal ARP requests just zero this field out.
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...