It takes some of the risk out of NFV for service providers.
The post Worth Reading: Why Google Gadgets are so Cheap appeared first on 'net work.
In last week’s post, the new BGP peer we’re tracing through the snaproute BGP code moved from open to openconfirmed by receiving, and processing, the open
message. In processing the open message, the list of AFIs this peer will support was built, the hold timer set, and the hold timer started. The next step is to move to established. RFC 4271, around page 70, describes the process as—
If the local system receives a KEEPALIVE message (KeepAliveMsg (Event 26)), the local system:
- restarts the HoldTimer and
- changes its state to Established.
In response to any other event (Events 9, 12-13, 20, 27-28), the local system:
- sends a NOTIFICATION with a code of Finite State Machine Error,
- sets the ConnectRetryTimer to zero,
- releases all BGP resources,
- drops the TCP connection,
- increments the ConnectRetryCounter by 1,
- (optionally) performs peer oscillation damping if the DampPeerOscillations attribute is set to TRUE, and
- changes its state to Idle.
For a bit of review (because this is running so long, you might forget how the state machine works), the way the snaproute code is written is as a state machine. The way the state machine works is Continue reading
Dugan will replace Jack Waters who left the company in July to be CTO of the Zayo Group
A new crop of applications is driving the market along some unexpected routes, in some cases bypassing the processor as the landmark for performance and efficiency. While there is no end in sight for the CPUs dominant role, at least not until Moore’s Law has been buried along the roadside, there is another path—this time, down memory lane.
Just as machine learning oriented applications represent the next development platform, memory appears to be the next platform for compute. While this won’t extend to all application areas, given the thrust of machine learning and memory bandwidth and capacity-strained applications, the more …
Memory is the Next Platform was written by Nicole Hemsoth at The Next Platform.
The multi-IoT platform will be housed at the company’s cloud data center, which is known as the “House of Clouds.”
SDxCentral sat down with Nachman Shelef, VP & GM of HPE OpenSDN, to dig deep into HPE’s new SDN strategy & details of its OpenSDN controller.
There are many reasons of OSPF to IS-IS migration, specifically for the Service Provider networks. Some of these reasons are shared later in the case study. OSPF to IS-IS migration can be done in three ways. In this article I will share, ‘ ship in the night approach ‘ which relies on having both routing […]
The post OSPF to IS-IS Migration appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
The post Worth Reading: Creating a PCE Prototype appeared first on 'net work.
docker service create --replicas 2 -p 80:80 --name apache httpd:2.4Next, the following script tests the agility of monitoring systems by constantly changing the number of replicas in the service:
#!/bin/bashThe above test is easy to set up and is a quick way to stress test monitoring systems and reveal accuracy and performance problems when they are confronted with container workloads.
while true
do
docker service scale apache=$(( ( RANDOM % 20 ) + 1 ))
sleep 30
done