Network Equipment

What layer of the OSI model does a switch operate?

At what layer of the OSI model does a switch operate?

Network controller event message: Frame retry, low speed rate exceeded

I receive a lot of event messages on my network controller in regards to frame retry rates being exceeded as well as frame low speed rates exceeded. What exactly are these referring to?

Minimum distance required between CAT5e terminations

Can you tell me if there is a minimum distance required between CAT5e terminations? I am told that the standards require at least 15m (50ft) between terminations, such as between a main cross-connect panel and a consolidation point patch block. Also, that if the actual distance is less, enough...

Best method labeling guide to Ethernet cabling

Is there a labeling guide to Ethernet cabling? I am researching the best method for labeling cable from one rack of equipment to another and am looking for a standard.

MAC address binding in Layer 2 and Layer 3 switches

How can we do MAC address binding in Layer 2 (L2) and Layer 3 (L3) switches?

Which switch in my IP-based CCTV system project will combine camera controls?

I need some help in selecting devices for an IP-based CCTV system project: We have 3 towers; each consists of 25 floors. A consultant planned to centralize the monitoring of 3 tower cameras in a security room on the ground floor. But before, the NVR was placed in each tower on the 5th floor. I...

Cisco's 2500 series router and WAN card serial interface differences

What is the difference between the serial interface of 2500 series Cisco routers and the serial interface of WAN cards (WIC-1t)? If there is no difference then is there any data-rate difference between the above two serial interfaces?

Recommendation for handling wall phone plates in UTP cable installations

In order to prevent a potential ground loop effect on F/UTP cable installations I usually avoid letting the metal shell of a shielded connector touch a metallic plate. What does Siemens AG recommend for wall phone plate installations when deploying an F/UTP cabled installation?

Reconfiguring network switches as 802.1q VLAN trunks for VMware ESX implementation

My data center network switches are configured as access ports, but we are soon implementing VMware ESX. Is there an easy way to reconfigure the switches to operate as 802.1q VLAN trunks to take advantage of VMware's VLAN management support?