Arista vs Checkpoint QSFP 100Gb

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Making fiber optic link with 100 Gb/s optics, you have to consider FEC (Forward error correction) Connection with different vendors can cause some issues with. In this case we discuss about making a 100Gb/s link between Arista Switch and Checkpoint firewall. The error correction under the 2 vendors are different and thankfully on Arista is possibly specify how we would …

FAZ NO-DATA

FortiAnalyzer a.k.a. FAZ – “No Data” issue

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After upgraded to FAZ firmware version to FortiAnalyzer_6.0.5 you can experience a “No Data” visualization problem in FortiView analytics functions. One of the most popular features of the FAZ is the FortiView information aggregator that allows the SOC a general overview of the security status of its network.In fact, in the dashboard where the “No data” problem may exist you …

iPerf3

iPerf3

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When you release an ip connectivity the most last important step is TEST, STRESS and TRY-OUT the new line based on customer requirements. There are many tools and blackboxes on the market especially if you need to test 1,10, 40 or 100 Gbps links. We use iPerf3 a great tool for active measurements with a various set of parameters like: …

Ansible Orchestration Concept

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The concept of orchestrate network devices is more important when you have to manage more and more devices. Now we spoke rapidly how is possible with ansible to do that. There are already several modules in Ansible ready to use for network devices provisioning. Concept The first idea is to keep either the playbook or the variables in the Git. …

Using cURL to troubleshoot TLS and SSL

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curl is a tool to transfer data from or to a server, using one of the supported protocols (DICT, FILE, FTP, FTPS, GOPHER, HTTP,HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET and TFTP). The command isdesigned to work without user interaction.curl offers a busload of useful tricks like proxy support, user authentication, …

Autotelnet

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Today I will show you how I built a simple script to automate telnet connections. Sometimes I had to troubleshoot network issues and chase problems on many devices starting from the output on a log file. At each IP corresponding to a network device that I show up in the logs, I had to open a terminal, type in the …

BGP AS-PATH prepending

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AS-PATH prepending stand for announce my prefix with a low priority. This technique, in a multihomed BGP scenario, it is used to lighten the traffic coming from a peer. The BGP route selection process prefer prefix with a short AS-PATH instead a long AS-PATH. FIRST create an ACL to select your source prefix the traffic to prepend: SECOND create a …