I understand the issues with using VLAN 1 as the native VLAN on a dot1q trunk. I follow best practices and change the native VLAN to a VLAN that does not carry any other traffic (switchport trunk native vlan x). I usually go a step further and do not...

This scenario goes well beyond my BGP skills. We have a case where we want only specific ASNs to go through a specific provider while maintaining our AS as the transit AS between the customer AS and the provider AS. Controlling inbound traffic...

Most of the posts in this forum center around receiving partial tables. What is the best way to send a partial table? I know I can control subnets via a distribute list (and specify ¼ or ½ of the IPV4 table via an ACL) and I can control what AS#...

We have a catalyst 4507 L3 switch at the core of the network. Attached to VLAN 1 is a Watchguard FW, various users, and a handful of servers. VLAN 1 is 192.168.2.24 and the FW is 192.168.2.254. 90% of the devices point to the VLAN 1 interface as t...

Currently there are routers and two T1's connected to two different ISP's in a BGP multihomed setup. The IP addressing space belongs to ATT and because of this the ATT T1 seems to see more traffic. One T1 which comes from Global Crossing will be rep...