network cisco ccna gns3 certification arteq

network cisco ccna gns3 certification arteq
a network runs through it

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Thursday, July 26, 2012

ospf hello...


the ospf hello packet contains

the router id of the originator

the area id

address mask

authentication, type and information

hello interval


router priority

dr and bdr

five flag bits of optional capabilities

router id's of it's neighbors

When a router receives a Hello from a neighbor, it will verify that the Area
ID, Authentication, Network Mask, HelloInterval, RouterDeadInterval, and Options values match the values configured on the receiving interface. If they do not, the packet is dropped and no adjacency is established.

If everything matches, the Hello packet is declared valid.

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