I've found a strange problem when trying to set up the following scenario and need some expertise:
Once everything is set, the phone is not getting an IP address from the DHCP server. Pings from a PC to SVI 71 or even DHCP Server with a static address, work fine (as expected) . Further investigations, by enabling dhcp snooping on L3 Switch for Vlan 71, reveal that the DHCP Discover packet is actually being received by the L3Switch, as shown. So, no problem here.
But, a "debug ip packet detail 101" (ACL 101) shows that the packet is being unicasted, but the source address is 0.0.0.0 instead of
SVI IP address of vlan 71.
Of course, the DHCP server never receives these packets (I assume L3Switch itself drops them).
No more investigations have been made, since I have tested the scenario in lab with a CAT3560 as L3 Switch and everything is fine, and source ip address for unicast broadcasts leaving the L3switch is 10.70.1.1 (as usual)
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...