We have an old Cisco CallManager 4.1(3) cluster (pub and sub) that we use to run a multi-customer VOIP service.  We have a problem where one customer (Cisco phones are a T1 hop away from CM and PRI gateways) has echo during MeetMe conferences.  All p...

How do I connect a multi-VRF CE router (with VRF A and VRF B) to an MPLS network using an IPSec tunnel over the Internet? I want VRF A on the CE to route to VRF A on the MPLS network and VRF B to route to VRF B.Basically, I want to have the remote s...

I want to support PPTP remote access for multiple communities of customers. Each community has an MPLS VPN on the core MPLS network. I have tried to configure multiple VPDN groups, echo mapped to its own Virtual-Template interface, each group suppo...

I have a wide-spread network of switches at customer sites that are not part of a large VTP domain. I want to assign MAC address to particular VLANs on the customer premises 3548 switches. Here are some questions that are centered around VMPS but y...