Cisco, Juniper, BIRD: One of the most frequent tasks in the administration of BGP interactions is basic diagnostics of the state of BGP peers: session state, accepted routes, advertised routes. The BGP protocol is the main and in fact the only used nowadays protocol for interaction between AS (autonomous systems). Accepted routes from an external BGP peer are an ability for your traffic to leave your autonomous system to the outside, to the resources of third-party providers. Routes that you announce are an ability for traffic from external networks to be delivered to your autonomous system, to your consumers.
System administrators use very often "simple" IP addresses on the equipment for test purposes. E.g. address 18.104.22.168/24. Sounds like a big deal? No, it's just a random address that can be typed on the keyboard simply and quickly and is quite suitable for test purposes. And even if you read examples in the set up documentation you may often come across Router1 IP 22.214.171.124, Router 2 IP 126.96.36.199. However, the effect of such settings may be rather unexpected. For example, on March 23, 2018, the public DNS service from CloudFlare using the address 188.8.131.52 was disrupted. Let's see what about other "simple" addresses and prospects for their use.
Nowadays, Internet provider business includes numerous services. This article will consider the core business that has been the launching point of everything, i.e. data communication business.
Now this is an absolutely classic model “bought in bulk cheaper - sold at retail more expensive”.
Russia is trying to block Telegram. Pavel Durov, the founder of Telegram, refused to hand over the encryption keys for user-defined chats to the federal services. The police cannot get prompt access to the correspondence of users, so the application is bound to be blocked in Russia. How is the situation developing and is it possible to block Telegram after all?
BGP looking glass service is a well-known standard service for a global network diagnostic. Basically, it’s related to BGP protocol, the main protocol of Internet Providers interconnection. It provides information about a certain route: how it is received by ISP, what is the length of this route, how many ISPs it goes through, what additional attributes it has and so on. In this article you can find the basics of global ISP interconnection and most important features of BGP Looking Glass service as well.