Good thing AT&T is such a short name. Seems some of their network support staff for managed networks are not too bright. If the name were longer these guys might forget where they work.
A friend emailed me this week about a network problem.
It seems the AT&T support department that handles support for his employer gave them a /23 IP range. They used PUBLIC IP space for an internal lan network. THEN it gets better. They broke the space two /24s. Ok nothing wrong there. They setup /24s to Vlan1 and Vlan2. BUT then these guys create one DHCP pool with the /23 subnet. And now the AT&T support group can’t explain to the customer company why things don’t work right. Sheesh. All it would take is two minutes to redo the DHCP as two /24 pools corresponding to the subnetted vlans. Still who uses PUBLIC IP ranges on an internal network? I guess you get what you pay for when you outsource your IT department to AT&T.