My previous post examined how a regional Provider Independent (PI) prefix is propagated across the Internet.  This post discusses the second aspect of the issue: how does Provider Assigned/Aggregateable (PA) space propagate across the Internet? Read More »

Tags: IPv6, IPv6 adress, IPv6 prefix origination, prefix policies, Provider Independent prefix

In a previous blog series about interfacing with your ISP, I mentioned tools that Internet Service Providers (ISPs) have, such as looking glasses and route servers, that can be used to verify their policies.  In this blog post, I want to examine some of those tools, but primarily I want to show how prefixes are propagating across the Internet. 

The question of prefix propagation comes up often when discussing how to develop an IPv6 address plan.  What happens if an organization gets Provider Independent (PI) space from a registry and then tries to advertise that prefix, or a smaller portion of that prefix, in a different region?  Will ISPs in that region filter the non-regional prefix?  Will they let the aggregate pass, but not the more specific prefixes? Read More »

Tags: address assignments, de-aggregation of IPv6 prefixes, IPv6, IPv6 Internet routing table length, IPv6_transition, Provider Independent (PI) prefixes, RIPE 399, RIPE-532

Today, I am pleased to share the news that Cisco WAAS 5.0 has been certified by SAP for integration with the SAP NetWeaver® technology platform 7.0.  Cisco WAAS 5.0  on the Cisco WAVE-594 appliance has been tested for performance preservation, secure encrypted communication, reliability, and functional correctness with SAP NetWeaver 7.0.  The WAN bandwidth utilization is typically reduced by 20 percent or more.

In addition to the performance benefits verified during SAP certification testing, Cisco introduced WAAS 5.0 earlier this year, which includes the following features: Read More »

Tags: AppNav, Central Manager, html5, iPad, iPad-ready, NetWeaver, NetWeaver 7.0, SAP, SAP CRM, SAP-Certified, SSL Support, waas, waas 5.0, WAAS Express, XenApp, xendesktop

[WARNING: This blog post contains specifics on actual product features. Stop reading now if you prefer PowerPoint to Excel.]

“Enterprise class.” Sounds awesome. But does it have any meaning to your business?

It turns out that it does, but we need to dig into a real product example to make it clear. One shining example from Cisco is our leadership in Enterprise class (there’s that phrase again!) 3G/4G. Let’s use this example to highlight how our engineers create “Enterprise class” products by focusing on: Read More »

Tags: 3G, 3G MIBs, 3G/4G, 3GPP, 4G, business continuity, CPE-based 3G, Enterprise Class, enterprise class security, enterprise network, EZ VPN, modem lifecycle, router, vpn, WAN, Wireless WAN

In my previous blog, we looked at how Catalyst switches can be used to assess video application readiness in the network before rolling out a video based collaboration application. In this blog, let us take a look at available tools on the Catalyst switches to monitor and troubleshoot video problems in the network.

As we know, fundamentally, video traffic is different from data traffic.  Video traffic is more dynamic and bandwidth intensive and even small changes in delay or loss can cause visible disruptions to user experience. Routinely, IT trouble tickets are opened by users that are faced with degraded video experience.  To add to that, interactive video is real time. Any delay in troubleshooting will make IT miss the window to rectify the problem. For a firm with many locations and buildings, finding the problem can be complex and time consuming without the right tools. 

Read More »

Tags: catalyst, Catalyst 3560-X, Catalyst 3750-X, Catalyst 4500E, Catalyst 6500, cisco prime, Cisco Switches, IOS, IOS features, mediatrace, monitoring the Catalyst, monitoring video traffic, performance monitoring, Remote Fault Resolution, Troubleshooting video traffic across a WAN