- Written by Tanuj Kumar Jhamb
- Posted on July 2, 2024
- Updated on July 3, 2024
- 1550 Views
ECN (Explicit Congestion Notification) is a mechanism of notifying network congestion without dropping the packets.The ECN based network congestion notification can be done in two ways: queue-length based ECN, latency based ECN. The queue-length based ECN marks the ECT packets when the average VOQ length exceeds the configured ECN threshold value whereas latency based
- Written by Tanuj Kumar Jhamb
- Posted on February 7, 2024
- Updated on February 7, 2024
- 2959 Views
sFlow is a sampling technique which monitors incoming traffic on all interfaces without affecting network performance. Egress sFlow is a feature which samples the packets in the egress pipeline for analytical purposes. Currently egress sFlow is only software based on Arista switches.
- Written by Tanuj Kumar Jhamb
- Posted on February 6, 2024
- Updated on February 7, 2024
- 3092 Views
WRED ( Weighted Random Early Detection ) is one of the congestion management techniques. It works at queue level to drop ECN capable and non ECN capable traffic randomly after reaching the given queue threshold even before the queue is full.
- Written by Tanuj Kumar Jhamb
- Posted on June 29, 2023
- Updated on July 5, 2023
- 4620 Views
sFlow is a sampling technique which monitors incoming traffic on all interfaces without affecting network performance. Egress sFlow is a feature which samples the packets in the egress pipeline for analytical purposes. Currently egress sFlow is only software based on Arista switches.
- Written by Tanuj Kumar Jhamb
- Posted on October 20, 2022
- Updated on July 11, 2023
- 8207 Views
sFlow is a sampling technique which monitors the incoming traffic on all the interfaces without affecting the network performance.
- Written by Tanuj Kumar Jhamb
- Posted on June 20, 2022
- Updated on June 29, 2022
- 6376 Views
With the use of MAC ACL configuration, match on ethertype can be programmed under QoS class-map configuration which will help customers to classify the control traffic based on ethertype (e.g. PPPoE discovery (0x8863) / session (0x8864) stage ) along with match on sub protocol (LCP/IPCP/PAP/CHAP) which is present in the payload.
- Written by Tanuj Kumar Jhamb
- Posted on April 18, 2022
- Updated on June 2, 2022
- 6640 Views
The flow-label match for QoS policy map can be achieved by using the TCAM profile “qos-match-ipv6-flow-label” which is available from EOS 4.27.2F onwards.
- Written by Tanuj Kumar Jhamb
- Posted on February 22, 2022
- Updated on March 3, 2022
- 7486 Views
This feature allows the user to match the 20 bit IPV6 flow label using the Qos Policy Map and allows to classify the flow-label controlled traffic.
- Written by Tanuj Kumar Jhamb
- Posted on December 16, 2021
- Updated on September 2, 2022
- 8147 Views
This feature allows the user to configure upto 1023 unique QoS Policy-maps per chip.
- Written by Tanuj Kumar Jhamb
- Posted on October 21, 2021
- Updated on October 26, 2021
- 7640 Views
Support for matching of DSCP / ECN is available under the QOS class map configuration on Arista switches.