Qt TCP/UDP network protocol introduction practice UDP communication

Source code:      NetToolsTest For other QT Widge articles, please click here:      QT Widget learning notes Sister articles:      Introduction and practice of Qt TCP/UDP network protocol (I) TCP communication This article is just the simplest introductory study, which can be ...

Posted by jalperin on Mon, 18 Oct 2021 10:46:00 -0700

Border Gateway Protocol BGP

Partition of dynamic routing protocols 1. Algorithm 1) , distance vector type - RIP, EIGRP (Cisco, fastest convergence), BGP (path information) 2) , link state - OSPF, ISIS 3) Path vector BGP 2. Scope AS 1) , IGP (internal Gateway Protocol) 2) EGP (border gateway protocol) BGP partition AS 1~65535 64512~65535 private AS 2^16AS number ...

Posted by jwilliam on Sun, 10 Oct 2021 08:13:21 -0700

Ethernet frame analysis (Ethernet II, Ethernet 802.3 raw, IEEE 802.3, Ethernet IEEE 802.3 SNAP)

The data link layer (layer 2) of OSI model is actually composed of two sublayers: media access control (MAC) sublayer and logical link control (LLC) sublayer. MAC sublayer controls device interaction. The LLC sublayer handles addressing and multiplexing. The physical addressing of the network connection exists at the data link layer. The proto ...

Posted by austenr on Tue, 21 Sep 2021 16:48:31 -0700

HCIA day 7 ACL access control list

ACL access control list Access restriction: match the traffic on the interface of router traffic in and out, and then control itDefine traffic of interest Matching rules Match one by one from top to bottom. The previous match is executed according to the previous one, and the next one will not be viewed Cisco implicitly rejects all at th ...

Posted by kerplunk on Mon, 20 Sep 2021 10:50:06 -0700