protocols

EIGRP Tables EIGRP uses different tables for its Routing Operation. Mainly, three types of EIGRP Tables are used in EIGRP (Enhanced Interior Gateway Routing Protocol). What are the EIGRP Tables? 
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There are three types adjacency in IS-IS Protocol.These are: – Level 1 routers form L1 adjacency with L1 and L1/2 Routers – Level 2 routers form L2 adjacency with L2 
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IS-IS Protocol uses L2 encapsulation Ethernet 802.3/802.2. It do not use Ethernet II. Ethernet II is used for IP traffic. IS-IS Protocol exchanges protocol information by using Link-State PDUs (Protocol 
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IS-IS (Intermediate System to Intermediate System Protocol) is a Link-State routing protocol that is developed by ANSI ISO. It is an open standard and classless Interior Gateway Protocol (IGP). IS-IS 
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BGP Origin Attribute informs the Autonomous Systems (AS) about the originator of that route. It is a Well-Known Mandatory BGP Path attribute like AS Path Attribute and Next Hop Attribute. 
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