• Author : Tanushree Bansal Bansal

 
 

IS-IS multiple Instances

Description This feature provides support for multiple IS-IS instances in the default VRF.  Multiple IS-IS instances are only supported in multi-agent mode. The functionality follows the IS-IS Multi Instance standard, RFC8202. Multiple instances allow for the isolation of resources associated with each IS-IS instance.  IS-IS adjacencies are instance specific.  Each instance has its own link state database (LSDB).  Each IS-IS instance is assigned an instance identifier.  The default instance ID is 0.   RFC8202 is enforced on instances configured with non-zero instance IDs. There are 2 mechanisms available that provide connectivity across instances: IS-IS routes and associated segment routing prefix...
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IPv6 Traffic Engineering in IS-IS

Description This feature implements RFC6119, which allows the extension of IS-IS protocol to carry IPv6 Traffic Engineering attributes. This information enables routers in an IS-IS network to calculate traffic-engineered routes using IPv6 addresses. Note that IS-IS in EOS only acts as a carrier for TE attributes and it is not used by any processing (e.g. SPF). The support for IPv4 Traffic Engineering for IS-IS was added in EOS-4.20.5F and that TOI  is available here. This feature is available with both the multi-agent routing protocol model and the ribd routing protocol model. Platform compatibility This feature is supported on all platforms. Configuration The...
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OSPFv3 Flood Pacing

EOS release 4.20.1F adds OSPFv3 flood pacing support that allows configuring the minimum interval between the transmission of consecutive LS update packets. This feature prevents the draining of the flood queue at once generating multiple LS update packets. Flood pacing helps mitigate high CPU or socket buffer utilization issues observed when a large number of LSAs get flooded at once. Increasing the flood pacing interval will help reduce LSA flooding in scenarios where the LSDB is being updated frequently. It should be noted that in case of large OSPF LSDBs, increasing the flood pacing interval to a larger than requried...
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