IS-IS Protocol has two types of nodes (since the roots of IS-IS are based on ISO Connectionless Network Protocol) i.e. IS & ES. ES (End System): A workstation or network host (limited routing capability) IS (Intermediate Systems): Network devices such as routers with full packet-forwarding capabilities. The word intermediate refers to the capabilities of routers as intermediate forwarding or relay devices. These are also referred to as gateway in some older networking literature of ISO *If these terms are new to you, I would recommend to review the IS-IS terminology & basics at ATech before proceeding further at: A brief flashback of IS-IS – Part I Read More …
Tag: IP NEtworking
Jumbo, MTU and MFL
is short for maximum transmit unit, which represents the length of an L3 packet or IP data packet. is short for Maximum Received Unit, which represents the maximum frame which can be received on the link. is short for maximum frame length, which represents the length of an L2 packet or Ethernet MAC frame. To better explain, let’s look at the structure of an Ethernet frame: From the diagram, we can see that: – The IP data packet ranges from 46 bytes to 1500 bytes. So the MTU is 1500 bytes. – The Ethernet MAC frame ranges from 64 Read More …