Gary A. Donahue
Format: PDF / Kindle (mobi) / ePub
Though Arista Networks is a relative newcomer in the data center and cloud networking markets, the company has already had considerable success. In this book, renowned consultant and technical author Gary Donahue (Network Warrior) provides an in-depth, objective guide to Arista’s lineup of hardware, and explains why its network switches and Extensible Operating System (EOS) are so effective.
Anyone with a CCNA or equivalent knowledge will benefit from this book, especially entrenched administrators, engineers, or architects tasked with building an Arista network. Is Arista right for your data center? Pick up this guide and find out.
Topic highlights include:
- SysDB: the EOS system database that holds state, statuses, and variables
- Multichassis Link Aggregation (MLAG): for linking a port-channel to multiple switches instead of just one
- Latency Analyzer (LANZ): the interface-buffer troubleshooting tool with a reporting granularity of one millisecond
- VM Tracer: for adding, changing, and removing VLANs without human interaction
- Zero-Touch Provisioning (ZTP): for remote switch configuration
- Hardware advantages: including merchant silicon, low-latency networking, and power consumption
- Gotchas: issues with Arista switches or systems
From your favorite streaming source (let’s call them Stream-Co). The servers might have 10 Gbps interfaces, which are con nected with 10 Gbps switches, and since they’re a big provider, they may even have 10 Gbps Internet feeds. The Internet is interconnected with pretty fast gear these days, so let’s say, just for fun, that all the connections from Stream-Co to your ISP network are 10 Gbps. Yeah baby—fast is good! Now, your cable Internet provider switches your stream in 10 glorious gigabits per.
Programmed to be network switches. By this point in the book, that should not be a surprise, but what may be surprising is the depth to which you, the administrator, may gain access to the system. If you really don’t like the idea of junior engineers having access to bash, you can limit their access to bash using AAA. To access bash, type the command bash from the enable prompt: Arista-1#bash Arista Networks EOS shell [GAD@Arista-1 ~]$ At this point, I am within a bash shell on the switch. The.
VIP (VLAN 99). The others appear in the output, but show a VIP of 0.0.0.0. The first entry, VLAN 100, has a configured SVI with no IP address at all, which is why the IP address column shows 0.0.0.0 as well. The second line is our original, single VIP on VLAN 99, and the last line shows a VLAN with a configured IP address, but no VIPs configured: Arista(config)#sho ip virtual-router IP virtual router is configured with MAC address: 00:1c:73:00:00:99 Interface IP Address Virtual IP Address Vlan100.
Working with OSPF for a while, you’re probably used to using the log- adjacency-changes command. Well, that works here too: SW1(config-router-ospf)#log-adjacency-changes I like comments, so let’s go ahead and add one: SW1(config-router-ospf)#! - OSPF process 200 to R2 Next I’ll add a network command to enable interfaces within the range. Again, I like to keep these commands as tight as possible, so I’ll include only the exact IP address of the interface I’d like to add, which is e2 (18.104.22.168):.
Spend 80 to 90 hours rendering a single frame for a blockbuster movie, or scientific compute farms that might involve tens of thousands of compute cores. If the network is the bottleneck within those massive computer arrays, the overall performance is affected. And imagine the impact that an oversubscribed network might have on such farms. I’ve never had the pleasure of work ing in such environments, but I can imagine that dropping packets would be frowned upon. Sure, those systems require some.