• Author : Christopher Brown


UCMP: Append Interface Speed to Received Link-Bandwidth

Description Unequal Cost Multi Path (UCMP) is a mechanism for forwarding traffic for an ECMP route by using a ratio of weights assigned to each of the route’s next hops.  This is done for BGP by disseminating BGP link-bandwidth extended community attribute information with BGP paths. The receiving device programs next hops for that route in the FIB, in the ratio of the received link-bandwidth values. The link-bandwidth value received by a device may refer to some bandwidth constraint further downstream from the sending device and thus may not take into consideration the bandwidth available on the link between the...
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IPv6 Neighbor Discovery Enhancements

The IPv6 Neighbor Discovery protocol performs Neighbor Unreachability Detection (NUD) in order to determine if two way communication with a neighboring node has failed. A neighbor is considered reachable if packets sent recently by the node have been confirmed as received by the neighbor. This can happen through a higher layer protocol such as TCP or by explicitly probing the neighbor via a Neighbor Solicitation. In normal operation, EOS will only perform NUD within a randomized range of 80-100% of the IPv6 Neighbor Cache expiry timeout. With this enhancement, EOS will perform NUD using a configured reachable time value. Platform...
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