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Description
Cisco ASR1000-ESP20 Embedded Services ProcessorMeet the Cisco ASR1000 ESP20 Embedded Services Processor, a 20 Gbps acceleration module built on the innovative Cisco QuantumFlow Processor. Engineered for next generation forwarding and queuing in silicon, this ESP20 module is designed to unlock scalable, high performance service delivery at the network edge. By integrating cutting edge silicon based processing with Cisco IOS XE software, the ESP20 enables smart traffic management, policy driven
Meet the Cisco ASR1000-ESP20 Embedded Services Processor, a 20 Gbps acceleration module built on the innovative Cisco QuantumFlow Processor. Engineered for next-generation forwarding and queuing in silicon, this ESP20 module is designed to unlock scalable, high-performance service delivery at the network edge. By integrating cutting-edge silicon-based processing with Cisco IOS XE software, the ESP20 enables smart traffic management, policy-driven services, and predictable performance for demanding enterprise and service provider environments. Whether you’re optimizing VPN performance, implementing advanced QoS, or delivering secure, policy-driven services at scale, the ESP20 is engineered to elevate your edge routing capabilities.
- 20 Gbps throughput with line-rate forwarding: The ESP20 delivers sustained, hardware-assisted performance at 20 Gbps, ensuring consistent, low-latency forwarding across diverse traffic patterns and service requirements.
- Cisco QuantumFlow Processor architecture: Built on Cisco’s QuantumFlow technology, the ESP20 provides scalable, silicon-based forwarding and queuing to support high-velocity traffic with intelligent path separation and precise service discrimination.
- Hardware-accelerated forwarding and queuing: By handling critical forwarding paths in silicon, the ESP20 reduces CPU load on the main router, enabling more complex services without compromising throughput or latency.
- Advanced service capabilities and policy enforcement: The module supports sophisticated traffic management, QoS, and policy-driven features at the edge, enabling reliable service chaining, lightweight encryption handling, and efficient VPN-like throughput optimization.
- Easy integration with ASR1000 routers: Designed specifically for the Cisco ASR1000 Series, the ESP20 plugs into supported chassis slots, aligning with Cisco’s software and hardware compatibility guidelines for a smooth upgrade or expansion path.
Technical Details of Cisco ASR1000-ESP20 Embedded Services Processor
- Throughput: 20 Gbps maximum forwarding capacity, enabling line-rate processing for edge services and policy enforcement.
- Architecture: Embedded Services Processor powered by Cisco QuantumFlow Processor technology for next-generation forwarding and queuing in silicon.
- Module type: ESP (Embedded Services Processor) designed to augment Cisco ASR1000 Series routers with accelerated services and enhanced traffic handling.
- Software integration: Works in concert with Cisco IOS XE and related software stacks, leveraging QuantumFlow-based acceleration to deliver consistent performance gains.
- Compatibility: Intended for use within the Cisco ASR1000 router family; requires supported chassis, slot availability, and software versions as specified by Cisco’s hardware compatibility guidelines.
How to install Cisco ASR1000-ESP20 Embedded Services Processor
- Verify compatibility: Confirm that your Cisco ASR1000 model, chassis, and current IOS XE/software version support the ESP20 module. Review Cisco’s hardware compatibility list to ensure proper support and slot availability.
- Power down and prepare: Safely power down the router and follow ESD precautions. Remove the chassis cover or access panel as required to reach the service processor slots.
- Insert the ESP20 module: Align the ESP20 module with its designated slot in the router chassis. Carefully insert it to engage the backplane connectors, then secure the module with the appropriate screws or latches as specified by Cisco’s hardware guidelines.
- Reconnect and power up: Reattach any backplane cables or required connectors, reassemble the chassis cover, and power the device back on. Allow the system to complete its POST and hardware initialization sequence.
- Verify installation and health: Use the router’s CLI to verify that the ESP20 module is detected and healthy. Check inventory, module status, and logging to confirm proper recognition, and begin with a basic configuration to enable the new services and policies you plan to deploy.
Frequently asked questions
What is the Cisco ASR1000-ESP20 Embedded Services Processor?
The ESP20 is a dedicated hardware module for Cisco ASR1000 Series routers that delivers 20 Gbps of forwarding throughput. It uses the Cisco QuantumFlow Processor to accelerate forwarding and queuing in silicon, enabling high-performance edge services and scalable policy enforcement without overloading the main processor.
What are the core benefits of the ESP20?
Key advantages include hardware-accelerated forwarding to free up CPU cycles, lower latency for critical traffic, consistent line-rate performance for diverse workloads, and enhanced support for advanced QoS and service chaining. This enables efficient, policy-driven service delivery at the network edge, even under heavy loads.
Is the ESP20 compatible with all ASR1000 models?
The ESP20 is designed for use with Cisco ASR1000 Series routers and requires the appropriate chassis, slot availability, and software version. Always verify compatibility from Cisco’s official documentation or hardware compatibility lists before purchase or installation.
How does the ESP20 affect network security and VPN performance?
By offloading intensive forwarding and queuing tasks to silicon, the ESP20 can improve the performance of security features and VPN-related traffic by preserving CPU resources for encryption and policy processing. This helps maintain high throughput and low latency for secure traffic while preserving appliance-wide performance.
What ongoing maintenance or software updates are needed?
Regular software updates through Cisco IOS XE and related management tools are recommended to take advantage of the latest QuantumFlow enhancements, bug fixes, and security patches. Monitor health and performance dashboards to ensure the ESP20 remains optimized for your evolving traffic patterns.
Can the ESP20 be used in a multistream or high-availability deployment?
Yes, the ESP20 is designed to fit into scalable, HA-ready deployments on supported ASR1000 platforms. When configured in a high-availability environment, plan for proper failover, synchronization of policies, and consistent software versions across redundant units to ensure uninterrupted service delivery.
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4.6 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Great, easy to understand explanations
Format: Kindle
I definitely needed this! I have been enduring a long period of spiritual attacks in the natural and physical realms. It has helped me to better understand my calling, even though I have been serving God as a spirit filled and spirit baptized follower of Yeshua.
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Reviewed in the United States on February 26, 2025
★★★★★ 5
Easy to read. Line spacing is just right! Thank you!
Format: Paperback
Michael Van Vlymen delivers the lived from experience truth once again!
Michael is down to earth and matter of fact as he writes. He is heavenly minded every day!
I've grown more in love with Jesus because of his testimony of heavenly realms operating on the earthly realm. My eyes have been opened much much more as I listen and read Mikes well illustrated books and videos!
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Reviewed in the United States on February 24, 2025
★★★★★ 5
Challenge Accepted
Format: Kindle
I liked the book. It challenged my position of focusing on the light and ignoring the darkness.
It challenges me to desire the whole experience of spiritual awareness and sight and to become adept in living as a watchman.
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Reviewed in the United States on March 11, 2025
★★★★★ 5
Outstanding, compelling, and thorough work on the historicity or non-historicity of the Resurrection of Jesus
Format: Paperback
I had been looking forward to reading this book since the first time I heard about it. I was sitting in Dr. Gary Habermas' class on miracles and he told us about Mike Licona, who was currently working on his dissertation on the Resurrection. Although it was published in 2010, I finally had the opportunity to read it over the past few months.
At over 700 pages, including an extensive bibliography and over 2,000 footnotes, this book is not a light read by any stretch of the imagination. As the subtitle states, this is a book dealing with historiography. Readers looking for a deep theological treatment on the Resurrection of Christ may want to look elsewhere since Licona's focus here is not theology, but history (although there is still a good deal of theology). Using methodological principles agreed upon by a vast number of historians from a variety of religious and philosophical backgrounds, he sets out to determine whether or not the historian "is warranted in regarding Jesus' resurrection as an event that occurred in the past" (p. 610).
Surprisingly, the book consists of only five chapters and one appendix, so each chapter averages more than 100 pages in length. Also, the second half of the book contains a significant amount of Greek, giving me a good opportunity to brush up on that. If you can't read Greek, don't worry, Dr. Licona provides an English translation throughout.
The first section deals with a significant number of preliminary considerations. There is an excellent critique of the skeptical postmodern view of history and a complete dismantling of the beliefs of Jesus "mythers" (those who claim Jesus never existed). There's also a good discussion on horizons (the presuppositions and biases we all have). While total neutrality may not be possible, Licona gives several principles historians should implement to help them transcend their horizon. Finally, he provides an honest discussion of his own biases so that readers are well aware of where he is coming from.
The second chapter focuses on whether or not miracles fall within the purview of the historian. Licona addresses the popular objections of David Hume and Bart Ehrman, as well as McCullagh, Meier, Wedderburn, and Dunn. Many skeptics simply have an a priori objection to miracles, so they aren't willing to even consider the possibility that historical evidence for a miracle may exist. There's an interesting discussion on the burden of proof as it relates to the historicity of miracle claims. I thought the following quote summarized the nature of evidence when it comes to miracle claims:
"It is the responsibility of the historian to consider what the evidence would look like if she were not wearing her metaphysical bias like a pair of sunglasses that shade the world. It is not the responsibility of the evidence to shine so brightly that they render such glasses ineffectual." (p. 196)
With all the preliminary matters out of the way, Dr. Licona gets down to the business of doing history. Chapter three examines the historical sources pertaining to Christ's Resurrection. Many Christians may object to the methodology employed in this chapter since he does not automatically accept every biblical passage on the subject as evidence, but bear in mind that Licona is doing his best to transcend his own Christian horizon to be as neutral as possible. He discusses over two dozen early sources and rates them as "unlikely, possible-minus, possible, possible-plus, highly probable, indeterminate [or] not useful" (p. 201).
The fourth chapter uncovers the historical bedrock pertaining to the fate of Jesus. This approach follows on the heels of the exhaustive work of Dr. Habermas who, since 1975, has kept track of over 3,400 academic works from scholars of various stripes on the Resurrection in English, German, and French. From this research, Dr. Habermas has shown that there are 12 facts accepted by the vast majority of scholars. He has reduced this to six best attested details in what he calls the "minimal facts" approach. Each of these facts are discussed, but Dr. Licona narrows this down to three facts that nearly all scholars agree upon: 1) Jesus died by crucifixion, 2) the disciples had experiences that led them to believe and proclaim that Jesus had risen from the dead, and 3) Paul converted to Christianity after experiencing what he believed to be a post-Resurrection appearance of Jesus. There's also a lengthy discussion on what "resurrection" meant to Jewish and Christian audiences in the first century.
The information contained in this chapter is often completely ignored by agnostics, atheists, Muslims, and others who do not want to even consider the Resurrection as a possibility. I have had many discussions with skeptics who display naivete when they claim that there is no evidence to support the claim that Jesus rose from the dead. It's one thing to disbelieve in the event, but it's an entirely different thing to completely ignore or to willingly remain ignorant of the historical bedrock pertaining to the fate of Jesus.
The fifth and final chapter of the book examines six different hypotheses that attempt to explain what happened to Jesus after being crucified. Along with the traditional Christian understanding of the Resurrection, the views promoted by Vermes, Goulder, Ludemann, Crossen, and Craffert are weighed in terms of their explanatory scope, explanatory power, plausibility, the amount of ad hoc elements, and illumination for solving problems associated with the subject. An appendix also examines Dale Allison's work on the Resurrection according to the same criteria. The traditional Resurrection hypothesis is the only view that fulfills all five criteria, and it outdistances the other views by a wide margin. Critics can claim that Licona merely concluded what he hoped to prove, but they must be able to point out flaws in his methodology, since his conclusion most certainly follows from the data when historiographical principles are applied.
My biggest concern with the book is found in the fifth chapter. While discussing the strange events described in Matthew 27:51-53, Licona suggested that the passage was not describing historical events but employing apocalyptic language to show that a significant person had died. Such descriptions were not uncommon in the ancient world when describing the death of important people. This comment has set off a wave of criticism from conservative Christian scholars like Norman Geisler and Al Mohler. I disagree with Licona's statement and share some of the same concerns as Geisler and Mohler. But when I consider the context and methodology being used in the book, I don't find it to be quite as grievous an error as some have claimed.
Skeptics will undoubtedly continue to dismiss the Resurrection of Christ, but they must deal with the research in this book or they simply are not interacting with the latest scholarship.
Dr. Licona's work raises the bar when it comes to the most important subject we could ever study: the Resurrection of Jesus Christ. I highly recommend it for anyone interested in this subject who is up to the task of reading an academic work. I have studied the subject for years, but I still learned a lot and will treasure this book as an extremely valuable resource.
Even though I disagree with his take on Matt. 27:51-53, I still need to give the book five stars since I don't need to agree with the author on every point for me to give a positive review and recognize the book's worth.
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Reviewed in the United States on December 30, 2012
★★★★★ 5
Brilliant, rigorous, balanced, and approachable
Format: Paperback
"The Resurrection of Jesus: A New Historiographical Approach," by Michael R. Licona is an outstanding, thorough yet highly approachable assessment of the evidence, sources, and explanatory hypotheses for the resurrection of Jesus Christ. As the subtitle suggests, it borrows significant methodological rigor and best practices from the field of historical analysis and applies them to biblical scholarship.
Licona begins his assessment with a meticulous discussion of his historical analysis methodology. Included in this section is his definition of five criteria he uses to assess a set of explanatory hypotheses. He then uses those assessments to weigh the hypotheses based on nine levels of certainty ranging from “certainly not historical” to “certainly historical.” The hypothesis representing the best explanation for the resurrection of Christ is the one rated highest in historical certainty based on the five criteria.
At the outset of the book, Licona also includes a robust discussion of historical analysis influences and issues because evaluating them openly is essential to his methodical approach and because they aren’t often discussed in biblical studies. It is in this section that he does something quite unique and insightful; Licona includes a full discussion of knowledge, experiences, worldviews, preferences and other influences, which he calls “horizons,” that tend to bias the assessment of history. Furthermore, he defines a set of six methods that he uses throughout the book to avoid his own biases as he strives to present outcomes based on methodical neutrality. It’s quite brilliant. Licona even includes a confession of his own “horizons” - his potential influences.
With all this foundation in place, Licona proceeds to identify all sources of evidence for the resurrection of Christ and rates each according to its likelihood of providing reliable independent testimony. Included in this assessment are sources from the Bible, early Christian writers, non-biblical Christian literature and early non-Christian writers. He then uses the most reliable sources as the basis for attesting to the reliability for all the available evidence for the resurrection. This produces three pieces of evidence that he calls “historical bedrock” because they are well attested within multiple reliable sources and are validated by a broad range of scholars.
In the final section of the book, Licona evaluates major assertions against the resurrection from skeptics and compares the results against a parallel evaluation of the resurrection hypothesis. Specifically, he uses his criteria and rating system to assess how well hypotheses from a range of skeptical scholars, like Gerd Ludemann and John Dominic Crossan, are able to explain the historical bedrock evidence. At the end of this extensive analysis, the biblical resurrection hypothesis is by far the most credible explanation for historical bedrock evidence associated with the resurrection of Jesus Christ.
As noted above, Michael Licona’s book is an excellent assessment of the evidence, sources and competing hypotheses associated with the resurrection of Christ. The author uniquely applies the meticulousness of best practice historical analysis methodology to arguably the most important of all biblical questions. Using rigorous criteria and rating scales, Licona delivers a fair and balanced evaluation that achieves the methodical neutrality he was striving for while minimizing, as best as possible, influences from his “horizons.” It’s also worth noting that Licona assesses a broad range of possible sources, including those classified as gnostic and pseudepigraphal, and includes viewpoints from a broad range of scholars, supportive and skeptical alike. Furthermore, the author includes a very robust set of footnotes on the various topics discussed within the book. These footnotes are helpful for both scholars and non-scholars looking for a deeper understanding or pointers for additional exploration plus they include additional explanatory comments that complement Licona’s focus on delivering a fair and balanced assessment.
The one issue I found while reading the book was its treatment of the empty tomb evidence. I was disappointed the author’s discussion was brief since I was looking forward to a robust evaluation. However, in his defense, Licona was looking for historical bedrock evidence that could be used to assess the various resurrection hypotheses. A large number of scholars are skeptical of the empty tomb so it doesn’t belong in his historical bedrock category. Beside this one brief moment of disappointment, I was greatly pleased with the totality of Licona’s analysis and outcomes.
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Reviewed in the United States on April 25, 2021