• Author : Gaofeng Yue Yue

 
 

Detect Duplicate IP Addresses

Description This feature detects duplicate IP addresses configured on the switch already owned by hosts the switch has already learned. When the duplicate IP address is detected, a syslog message will be generated. It can help the network operator to identify IP addresses misconfiguration.  For example, the switch is configured with a primary IP address of 100.1.0.100. interface Ethernet1/1    no switchport    ip address 100.1.0.100/24 Then, the switch learns hosts with IP addresses of 100.1.0.101, 100.1.0.102, 100.1.0.103, 100.1.0.104 in the ARP table. When the primary IP address is changed to 100.1.0.102, a syslog message will be generated. Similarly if the interface...
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Setting metric on static routes and EOS SDK support

Description This feature introduces a metric for static routes so that the user can configure both administrative distance and metric for a static route. Administrative distance precedes metric when comparing configured routes. Lower metric route will win among routes with the same administrative distance. Winning routes will be programmed to hardware and shown in “show ip route”. It can be configured by CLI or through EosSdk. One use case of static route metric is to impact BGP best path selection. Route Arbitration case 1 — route with lower admin distance wins ip route 10.0.0.0/8 192.168.1.1 10 metric 100   (win)...
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Setting metric on static routes and Eos SDK support

Description This feature introduces a metric for static routes so that the user can configure both administrative distance and metric for a static route. Administrative distance precedes metric when comparing configured routes. Lower metric route will win among routes with the same administrative distance. Winning routes will be programmed to hardware and shown in “show ip route”. It can be configured by CLI or through EosSdk. One use case of static route metric is to impact BGP best path selection. Route Arbitration case 1 — route with lower admin distance wins ip route 10.0.0.0/8 192.168.1.1 10 metric 100   (win)...
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FIB compression

Description FIB compression allows us to program routes into the hardware more efficiently. Routes are programmed in the route table of ASIC in switches to do L3 packet forwarding, and the ASIC route table is a precious HW resource. It would be preferable to many users  if the switch can install more routes. FIB compression introduces optimizations that can make use of HW resources more efficiently, and achieve the same result of a larger HW route table size. This feature is especially helpful when there are only a few distinct adjacencies on the switch, and more routes than HW route table can install to...
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