Written by Omar Santos, Incident Manager, Cisco Product Security Incident Response Team (PSIRT) Security Research and Operations
Since the early 1990s, we’ve watched as the number of entries on the Internet routing table has steadily grown. In 2008 the table reached 256,000 routes, triggering action by network administrators to ensure the continued growth of the Internet. Today we know that another significant milestone has been reached, as we officially passed the 512,000 or 512k route mark!
Our industry has known this milestone was approaching for some time. In fact it was as recently as May 2014 that we provided our customers with a reminder of the milestone, the implications for some Cisco products, and advice on appropriate workarounds.
If you would like to revisit that information, you can find the customer support article here: The Size of the Internet Global Routing Table and Its Potential Side Effects (12 May 2014)
Full text of the customer support article below: Read More »
Tags: 512k, asr 1000, asr 9000, Catalyst 6500, catalyst 7600, Internet global routing table, RAM, TCAM
This is a guest blog contributed by Kenneth Corbett, DOCSIS Engineer, Charter Communications.
The Cisco IP Challenge in partnership with the SCTE is an exciting, tiring, and beneficial event for any engineer. The IP Challenge format is pretty simple. You have two online qualifier rounds where the top 9 scores receive an invite for a live competition at the SCTE Expo. There are three jeopardy styled heats at the live event. The three winners of those heats participate in a live configuration event to crown the overall champion.
I have participated in the IP challenge online qualifier for two years. Anyone who has ever done this knows the feeling of clearing the board then waiting for bonuses and tokens. It involves a 24/7 watching and waiting for things to pop up. Let’s just say you’re low on sleep by the end of each round. You have two qualifier events spread out over a month or so. You have to watch and try to score as highly as possible in each round to ensure a spot in the final nine participants. You pass the time chatting with your peers from all areas in the chat and share your experience. The first year I participated I was one of the final 9 but I was unable to attend due to logistics. Last year I was finally able to go to the live event.
The SCTE Expo is exciting for a number of reasons and that is one of the perks of participating in the live event for the Cisco IP Challenge is the free pass. You’re Read More »
Tags: cable-tec expo, Charter Communications, scte ip challenge
Written by Dan Crawford, Marketing Manager
Customers demand their Internet to always be on, and service providers -- especially those serving businesses -- strive to meet this with “five nines” of availability. That is to say they aim for a service level that only allows for about 5 minutes per year of downtime. Achieving such performance is no simple task, but is a key differentiator for 123Net, a Michigan based company offering premium voice, data, and colocation infrastructure services.
As 123Net has built out a 2400+ mile fiber network powered by Cisco optical technology. Most Read More »
Tags: 123.net, 123Net, asr 9000, asr9k, Cisco, network infrastructure
Written By Alfonso San Jose, Sales Consulting Systems Engineer
We have been hearing from our Service Provider customers like you about their interest in Voice over Long Term Evolution (VoLTE), and for good reason. Offering VoLTE affects profitability in two ways. One is by creating a great voice experience that helps to attract and retain subscribers. VoLTE provides guaranteed quality of service and fast call-setup time. At the same time, VoLTE can lower network costs. However, VoLTE creates new demands on the network that requires a policy management solution to address. VoLTE changes the game for policy management because it imposes much heavier demands than 4G data services. The policy management solution needs to meet the following four requirements: Read More »
Tags: 4G LTE, Cisco Mobility, latency, PCEF, Service Provider, VoLTE
Written By Wayne Cullen, Senior Manager, Service Provider Architectures
Along with cloud computing, M2M, collaboration, and hoodie sweatshirts, virtualization is a trend du jour. Like all trends, it’s based on an old idea (dating back to the mainframe era) that has now been reimagined for new purposes. One of the newest roles for virtualization is network functions such as those in switches, routers, and network appliances, including firewalls and load balancers—thanks to Network Functions Virtualization (NFV). And this is just the beginning of what is going to be virtualized in your network.
Being a Selective Virtualizer
Virtualization can provide some big cost savings and reduce network complexity. But virtualization is like chocolate. You eat too much and some bad things can happen. The early days of virtualization (when servers were virtualized) provide a cautionary tale. Server virtualization lowered CapEx but led to skyrocketing operational costs because much more complex processes—hence highly-skilled staff—were required.
The lesson: Be selective in virtualizing your resources and functions. And focus your time optimizing your network to lower TCO with a flexible, adaptable infrastructure as part of your virtualization efforts.
How and Where to Optimize Your Network for Virtualization
Tags: network functions virtualization, NFV, Service Provider, virtualization