Archive for July, 2012

Advanced Private VLAN Configuration on Dell Force10 Switches

Tuesday, July 17th, 2012

In a prior lab, “Dell Force10 Z9000 – Creating Additional Layer 2 Isolation via Private VLANs“, I demonstrated some basics in regards to private VLANs. In this lab, I plan to go a little further and demonstrate how hosts in the same private VLANs (PVLANs) on two different switches can communicate with each other. (more…)


Multi-Area OSPF – Redundancy, Route Summarization, and LSA Filtering

Monday, July 9th, 2012

In this lab, all routers except for R4 and R5 are Cisco 3725 routers [IOS 12.4(15)T10]. Routers R4 and R5 are Cisco 7200 routers [IOS 12.4(24)T]. Below is the network diagram for this lab.


Dell Force10 Z9000 – Creating Additional Layer 2 Isolation via Private VLANs

Saturday, July 7th, 2012

Private VLANs provide additional segregation capabilities within a VLAN. A private VLAN provides further layer 2 isolation between ports. A common example of private VLAN use is a hotel providing Internet access for patrons while at the same time preventing direct access between guest ports. Instead of using private VLANs, you can create a separate VLAN and assign a separate IP subnet to each guest as shown below. (more…)


802.1Q Trunking Between Cisco and Dell Force10 Switches

Monday, July 2nd, 2012

VOIP PhonesIn this lab I use a Dell Force10 S25P switch [FTOS] and a Cisco C3750 switch [IOS 12.2(25)SEE3] to demonstrate 802.1Q trunking. (more…)