• Tag : BFD

 
 

Hardware Accelerated BFD Transmit

Description This feature adds support for offloading BFD Transmit path to hardware (ASIC) for specific types of BFD sessions. This will improve accuracy of transmit timer implementations for BFD (especially with fast timers like 50 ms) and relieve pressure on the main CPU in scenarios of scale. On supported platforms, hardware acceleration-capable BFD sessions will be offloaded by default. Memory resources are required on ASIC to offload sessions (one unit per discriminator). Currently, the number of session discriminators that can be offloaded is restricted to 200 per ASIC. Only single-hop BFD sessions on front panel ports are capable of being...
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Hardware Accelerated BFD Transmit

Description This feature adds support for offloading BFD Transmit path to hardware (ASIC) for specific types of BFD sessions. This will improve accuracy of transmit timer implementations for BFD (especially with fast timers like 50 ms) and relieve pressure on the main CPU in scenarios of scale. On supported platforms, hardware acceleration-capable BFD sessions will be offloaded by default. Memory resources are required on ASIC to offload sessions (one unit per discriminator). Currently, the number of session discriminators that can be offloaded is restricted to 200 per ASIC. Only single-hop BFD sessions on front panel ports are capable of being...
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IS-IS BFD

Does Arista EOS suppport ISIS BFD? If not, then are there any plans to support it and when? Thanks, Laszlo

BFD SSO

BFD Stateful Switchover (SSO) allows for a switchover from an active supervisor to a standby supervisor where BFD sessions do not flap on the router undergoing the SSO, or the router that is the BFD peer. If BGP is configured with a BFD neighbor and with graceful restart, then BGP routes will not flap during SSO. If IS-IS is configured with an IPv4 BFD neighbor and with graceful restart, then IS-IS adjacencies will not flap during SSO. BFD echo mode is required to be configured on the BFD peer. In the below diagram if Router A is supporting SSO then...
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BFD Enhancements

As of EOS-4.17.0F, BFD support has been enhanced with support for configuring BFD within VRFs, improved scalability and cleanly disabling BFD sessions. This latter enhancement, referred to as AdminDown support, makes it possible to disable BFD configurations without the remote peer interpreting the BFD state change as a session failure. In most instances this non-disruptive BFD disablement is performed automatically upon changing the BFD configuration. Situations which would still be disruptive are cases where the interface which the BFD session is operating over is disabled or reconfigured to be incompatible with BFD. Examples include, the switchport or no vlan 1234...
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OSPFv3 BFD

EOS-4.17.0F adds support for BFD in OSPFv3. BFD provides a faster convergence in scaled deployments where using aggressive times may cause scalability issues. This also addresses scenarios which need sub-second hello timers , which is not supported in EOS. Platform compatibility OSPFv3 BFD feature is supported on all platforms. Configuration This feature can be configured in two ways. The following command is available under the config-router-ospf3 mode. Arista(config)#ipv6 router ospf <Ospf Process ID> Arista(config-router-ospf3)#[ no | default ] bfd all-interfaces This enables or disables BFD for all OSPFv3 interfaces. It is disabled by default. The following command is available under...
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