Internal BGP Neighbors

A BGP router considers each neighbor to be either an internal BGP (iBGP) peer or an external BGP (eBGP) peer. Each BGP router resides in a single AS, so neighbor relationships are either with other routers in the same AS (iBGP neighbors) or with routers in other autonomous systems (eBGP neighbors). ...

Sophisticated Metric

EIGRP uses a sophisticated metric that considers bandwidth, load, reliability, and delay. That metric is Although this equation looks intimidating, a little work will help you understand the math and the impact the metric has on route selection.  You first need to understand that EIG...

Wireless Medium Access

Before transmitting frames, a station must first gain access to the medium, which is a radio channel that stations share. The 802.11 standard defines two forms of medium access:

QoS Requirements of VoIP

VoIP deployments require the provisioning of explicit priority servicing for VoIP (bearer stream) traffic and a guaranteed bandwidth service for Call-Signaling traffic. These related classes are examined separately. Voice (Bearer Traffic) The following list summarizes the key QoS requirements ...

Changing Administrative Distances

When dealing with administrative distances, always bear in mind that they only affect route selection on this particular router. Administrative distances are not distributed by the routing protocols. However, they can affect the routing protocols. Distance vector algorithms in particular only distri...

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