EIGRP - Static neighbors over any L2 technology


When connecting two routers to each other via a serial link, one side of the link must be defined as the [DTE](/serial-data-terminal-equipmentdte) and the other side as the [DCE](/serial-data-communication-equipment-dce) 

For such a link to function correctly

* The DCE side must be configured with the [clock rate](/serial-interface-clock-rate) since it is th device that generates the clocking signal for synchronization.
* The DTE side must not have the clock rate set, but must have the `no keepalives` command set in order to avoid the device sending any synchronization requests that may cause the link to fail.

Links:

https://forum.networklessons.com/t/eigrp-static-neighbor/1244/34?u=lagapidis

Serial - Link between two routers

STP cost long mode

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STP determining blocked port using cost

STP direct vs indirect link failure

STP fine tuning the spanning tree protocol

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STP how to find the root bridge

STP interface type

STP prio nbr value

STP topology change process

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Segment Routing

Serial - Data Communication Equipment (DCE)

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Serial Interface - Clock Rate

Serial Interface default broadcast address

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Show open TCP-UDP ports on Cisco router

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Syslog

TCP - Congestion control

Serial - Link between two routers

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