I'm configuring a couple of Catalyst 4948 switches to be used as aggregation switches to support server access switch uplinks. Currently, we have 3550 switches we use in the distribution (aggregation) layer but would like to replace them with the Cat...

Hi All,L2 security documents suggest to avoid using vlan1 and tagging all frames with vlan IDs using the global configuration of vlan dot1q. Other Cisco non-security documents suggest using the switchport trunk native vlan # which removes any vlan ta...

I have a Cisco 2620 with two each 2-Port Channelized T1/ISDN-PRI controllers. I'm multilinking two T1 circuits, routing IP, and bridging non-IP. I'm using PPP encapsulation instead of HDLC on the two serial interfaces and the multilink interface. Whe...