Category Archives: VTP

CCNA Certification Changes 2013 Summary

Posted on 2013/04/03 by RedNectar Chris Welsh

On 26 March 2013, Cisco announced new CCNA certifications.. Here is my interpretation of the changes. In a nutshell ICND1 is now considerably harder, absorbing much of the ICND2 content (IPv6, ACLs, VLANs and OSPF) while ICND2 seems to be … Continue reading →

Posted in 802.1ad, 802.3ad, 802.3ax, ACL, CCNA, Certifications, Cisco, EIGRP, Etherchannel, ICND, ICND1, ICND2, IPv6, New CCNA certification, New Cisco certifications, opinion, OSPF, portfast, rant, rapid spanning-tree, RIP, Routing, spanning-tree, VLANs, VLSM, VTP, wifi, wireless network | 6 Comments

The Access VLAN is dead. Long live the Native VLAN.

Posted on 2012/03/11 by RedNectar Chris Welsh

I saw a question recently that asked “What is the point of the Native VLAN?” – and I could sense a degree of frustration in the question caused by Cisco’s weird way of describing untagged VLANs differently on different port … Continue reading →

Posted in Access VLAN, CCNA, Cisco, Native VLAN, VTP | Tagged , , , , , | 4 Comments

Remember – VTP is sent untagged (so ends up on the native VLAN)

Posted on 2010/12/14 by RedNectar Chris Welsh

When VTP sends updates, they are sent without tags. So (assuming the native VLAN is VLAN 1) if you have restricted your trunk port at the receiving end with a command like: switchport trunk allowed vlan 2,10,20 it will drop … Continue reading →

Posted in Cisco, VTP | 1 Comment