data center

Connecting to Cloud Providers High-Level Network Architecture

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More than 70 percent of Internet Traffic passes through Data Center Alley in Loudoun County. Ashburn, Virginia has the largest data center footprint in the world. It makes sense to lease or collocate your data center here. Almost all cloud providers (Azure, Amazon AWS, Google, Office 365, etc.) have presence in these data centers. Being collocated locally can take advantage of direct connect services to any of these Cloud providers. Ashburn Consulting can help you design a Hybrid Cloud On Prem ...

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ICMP Security

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This is a draft guide to handling ICMP securely.

Guide Analysis to Handling ICMP protocol

Summary:

This guide is an attempt to help answer common questions related to the handling of ICMP protocol in a secure and effective manner. Comments and feedback is always welcomed. This article is meant to cover the major area in which there may be questions on how to handle ICMP and what specifically should we allow in each particular condition which will also allow for ...

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Layer 2 Tracing for (6500, 7609, 4500) Cisco Switches

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In a 6509, 7609 or any Chassis based Cisco switch, to determine where the switch forwards a Source and Destination pair to an actual port in a Port-channel/Etherchannel do the following commands:

Note: Doesn’t apply to Nexus switches.

First enter console for switch:

port-channel hash