Antonio Perez

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**EIR-PIR-MBS-CIR-CBS**

  * **EIR (Excess Information Rate)** 
  * **PIR (Peak Information Rate)**
  * **MBS (Maximum Burst Size)**
  * **CIR (Committed Information Rate):** is the minimum guaranteed traffic delivered in the network. 
  * **CBS (Committed Burst Size)** is the flexibility of your provider, the maximum bytes allowed to exceed your CIR to be still CIR confirmed.

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**Committed Information Rate (CIR)**: CIR is the bandwidth or data rate guaranteed by an internet service provider (ISP) in a frame relay network. It represents the minimum data rate that the ISP promises to deliver consistently. 

**Excess Information Rate (EIR)**: EIR is the additional data rate beyond the CIR that an ISP may allow during non-congested periods. EIR provides the ability to burst above the CIR when network conditions permit, but without any bandwidth guarantee. 

Comcast Router Configuration: Comcast customers with dedicated fiber circuits are responsible for configuring a router to manage the CIR and EIR appropriately. The router settings can impact the actual throughput experienced by the customer.

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{{ :networking:bandwidth-profiles-for-ethernet-services.pdf |}}

{{pdfjs 46em >:networking:bandwidth-profiles-for-ethernet-services.pdf}}

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**CIR (Committed Information Rate)**:

CIR refers to the minimum guaranteed bandwidth or data transfer rate that a service provider promises to deliver to a customer.  With CIR, a customer can expect a consistent level of service, ensuring that a certain amount of bandwidth is always available regardless of network congestion or other factors.

Comcast Business may offer CIR as part of its service level agreements (SLAs) to ensure reliable and predictable internet performance for businesses.
EIR (Excess Information Rate):

**EIR represents the additional bandwidth or data transfer rate available beyond the CIR**. This allows customers to utilize extra bandwidth when needed, especially during peak usage times or for bandwidth-intensive tasks. 

Comcast Business might offer flexible EIR options to accommodate varying business needs and ensure optimal internet performance during high-demand periods.

When selecting a router for Comcast Business services with CIR and EIR, it's essential to choose a router that supports Quality of Service (QoS) features. QoS helps prioritize and manage network traffic, ensuring that critical business applications receive the necessary bandwidth and performance levels.

For specific router recommendations or detailed information about Comcast's CIR and EIR offerings, it's advisable to contact Comcast Business directly or visit their official website for the most accurate and up-to-date information tailored to your business requirements.


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====== Test ======


**Service configuration test**:

It is a short-term test where the bandwidth and performance of the specific service is verified, to do so it is monitored that all performance indicators (IR, FTD, FDV and FLR) are met at the same time. 

The test is carried out for each of the services sequentially and consists of 5 phases:
1. [Minimum Data Rate - CIR]
2. [CIR-EIR]
3. Traffic police test
4. CBS (Experimental-Optional)
5. EBS (Experimental-Optional)

To go through each of the first 3 phases, a stepwise increase in the network load is carried out.
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**Test Frame Size**: 

The size of the frame used for the service configuration test and the service performance test can be constant or a set can be chosen (it can be randomly) that is repeated with a certain sequence (EMIX).    

The above to see MTU and regulate it with that of the operator's end point, it should be around 1492 bytes.

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**Should MTU be 1500 or 1492?**

It is generally recommended that the MTU for a WAN interface connected to a PPPoE DSL network be 1492. In fact, with auto MTU discovery, 1492 is discovered to be the maximum allowed MTU. However, having an MTU of 1452 is most optimal.
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**[[networking:shannon_theorem|Shannon's theorem]]**
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{{ :networking:eir-cir.pdf |EIR-CIR}}

{{pdfjs 46em >:networking:eir-cir.pdf |EIR-CIR}}
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**{{ :networking:mef-presentation-overview-of-mef-23.pdf |Introducing the Specifications of the
MEF}}**

{{pdfjs 46em >:networking:mef-presentation-overview-of-mef-23.pdf}}
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{{ :networking:rax700.png?600 |}}
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{{ :networking:rax701-gc-manual.pdf.pdf |RAX701-GC-Manual}}

{{pdfjs 46em >:networking:rax701-gc-manual.pdf.pdf |RAX701-GC-Manual}}
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{{ :networking:datasheet_rax711.pdf |Datasheet_RAX711}}
{{pdfjs 46em >:networking:datasheet_rax711.pdf |Datasheet_RAX711}}

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[[https://www.slideshare.net/slideshow/rnec-n101-lite-rax711lpptx/257545578#103|RAISECOM - CFM Configurations]]
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