Sound stupid, I know. Once upon a time.... still stupid, I know.
Using the same 2960G, the problem was at Layer1 mismatch with some type of PDU or security doors controllers, some of these equipments don’t have port negotiation, so you have to set manually and check if the cable had the correct configuration T568A-B att Alexandre Em 22 de out de 2017, à(s) 20:25, Curtis Piehler <[email protected]<mailto:[email protected]>> escreveu: I'm racking my brains out on this yet it seems so simple unless I am encountering a bug. I have several host devices connected to the following switch, Firewalls/PDUs, etc...: Switch Ports Model SW Version SW Image ------ ----- ----- ---------- ---------- * 1 48 WS-C2960G-48TC-L 12.2(55)SE10 C2960-LANBASEK9-M This switch sits down stream from a 3560G which uplinks to a firewall (Router on a stick). The problem I am encountering is that the devices connected downstream of the 2960G are not receiving DHCP from the 3560G switch or firewall. Of course I have one DHCP at a time but to test different devices that can serve out DHCP. What's odd is that I have the same exact model PDU connected to the 3560G and it obtains DHCP without issues. The devices downstream of the 2960G do not yield any MAC address. I have done all sorts of DHCP debugging and nothing comes up from the devices. I even tried moving the DHCP server down to the 2960G and I see no activity. Statically assigning IPs to devices work no problem. The PDUs are Raritan factory defaulted so when the port is shut/no shut they are designed to get DHCP. The firewall is a Fortinet with the interface set to obtain DHCP. Unfortunately I can not get a traffic sniffer on this switch but I'm wondering if anyone has had this issue before or heard of this. Curtis _______________________________________________ cisco-nsp mailing list [email protected]<mailto:[email protected]> https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
