PIM Designated Routers/Forwarders In PIM Bidir mode, the software chooses a designated forwarder (DF) at RP discovery time from the routers on each network segment. The DF is responsible for forwarding multicast data for specified groups on that segment. The DF is elected based on the best metric from the network segment to the RP. […]

Ethernet Addressing The entire idea of sending data to a destination unicast MAC address works well, but it works only if all the unicast MAC addresses are unique. If two NICs tried to use the same MAC address, there could be confusion. (The problem would be like the confusion caused to the postal service if […]

Optimizing Dynamic Routing BGP route selection may not always be the optimal path to the destination as the protocol does not take into consideration latency, congestion, or jitter. As a result, your traffic may be routed over a suboptimal path. The path that BGP chooses may need to be overwritten with a better path. Path […]

Caution You should not configure both Auto-RP and BSR protocols in the same network. Auto-RP: Auto-RP is a Cisco protocol that was used prior to the Internet standard bootstrap router mechanism. You configure Auto-RP by selecting candidate mapping agents and RPs. Candidate RPs send their supported group range in RP-Announce messages to the Cisco RP-Announce […]

Ethernet Data-Link Protocols One of the most significant strengths of the Ethernet family of protocols is that these protocols use the same data-link standard. In fact, the core parts of the data-link standard date back to the original Ethernet standards. The Ethernet data-link protocol defines the Ethernet frame: an Ethernet header at the front, the […]

AppExchange and package licensing Depending on the licensing requirements of an AppExchange, managed, or unmanaged package, permission set licenses are the typical method of licensing paid packages. As you’ll already know, when installing a package from AppExchange (or directly from Salesforce, in the case of an offering such as Financial Services Cloud), users will need […]

Storage Storage services are priced depending on the type of service being used. For most workloads, storage services can be broadly split into two main categories: Amazon EBS volumes are priced based on three factors: Note You can estimate your costs using AWS Pricing Calculator. However, remember that AWS Pricing Calculator does not take into […]

Using Fiber with Ethernet To use fiber with Ethernet switches, you need to use a switch with either built-in ports that support a particular optical Ethernet standard, or a switch with modular ports that allow you to change the Ethernet standard used on the port. Refer back to Figure 2-8, which shows a photo of […]

Note In this book, we use the terms PIM join message and PIM prune message to simplify the action taken when referring to the PIM join-prune message with only a join or prune action. The software sends join-prune messages as quickly as possible. You can filter the join-prune messages by defining a routing policy. For […]

SageMaker Training Compiler If you’ve reached this section, you are about to delve into the world of SageMaker Training Compiler (SMTC), a game-changing tool designed to supercharge the training of your ML models on SageMaker by optimizing intricate training scripts. Picture this: faster training, swifter model development, and an open door to experimentation. That’s the […]