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What is Protected Port ?

Posted by gokhankosem on 10 Sep 17 - 0 Comments
protected-port-topology

What is Protected Port ? Protected Ports are one of the security mechanisms used on switch world. By default all the switch ports are unprotected and equal. But with protected port configuration, some ports are filtered an restricted to access each other. If you configure a port as protected, data traffic on layer 2 is […]

Private VLANs (pVLANs)

Posted by gokhankosem on 10 Sep 17 - 3 Comments
Private-vlan-ports

Private VLANs (pVLANs) VLANs used to divide the Broadcast Domains. With this division, different departments, networks are isolated each other and become another Broadcast Domain. Sometimes, this separation is not enough and additional separation is needed. Private VLANs (pVLANs) are used at these times. Basically we can say that Private VLANs are sub-VLANs or VLAN […]

Link Layer Discovery Protocol-Media Endpoint Discovery, LLDP-MED

LLDP-MED (Link Layer Discovery Protocol-Media Endpoint Discovery) As a standard and open protocol, LLDP is a good protocol. After the development of LLDP, some of the additional properties needed especially for Voice Over IP (VoIP). So LLDP extended. The extended version of LLDP is LLDP-MED (Link Layer Discovery Protocol – Media Endpoint Discovery). You can […]

Redundancy Protocols – Part 4 (VRRP)

Archived in the category: CCIE, CCNP, Cisco Certification, JNCIP, NRS II, Redundancy, SRA, VRRP
Posted by gokhankosem on 23 Dec 15 - 0 Comments
redundancy protocols VRRP (Virtual Router Redundancy Protocol), protocols for redundancy

VRRP(Virtual Router Redundancy Protocol) VRRP(Virtual Router Redundancy Protocol) is a standard based redundancy protocol. The configuration of this protocol is like HSRP with only small differences. In VRRP the active router is called Master, and the remainning ones are all Backup routers. So there can be multiple backup routers. VRRP (Virtual Router Redundancy Protocol) By […]

network redundancy, protocols for redundancy

Network Redundancy Protocols Redundancy is a common point for today’s topologies. Especially in mission-critical networks it is not acceptible that using only one gateway to reach a point. Because one gateway means single point of failure. With multiple gateways, you can still reach the remote node even if the gateway that you connect fails. As […]


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