Supported Devices for Forward Error Correction
The forward error correction is supported on all the Cisco IOS XE Catalyst SD-WAN devices.
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
Note |
To achieve simplification and consistency, the Cisco SD-WAN solution has been rebranded as Cisco Catalyst SD-WAN. In addition, from Cisco IOS XE SD-WAN Release 17.12.1a and Cisco Catalyst SD-WAN Release 20.12.1, the following component changes are applicable: Cisco vManage to Cisco Catalyst SD-WAN Manager, Cisco vAnalytics to Cisco Catalyst SD-WAN Analytics, Cisco vBond to Cisco Catalyst SD-WAN Validator, Cisco vSmart to Cisco Catalyst SD-WAN Controller, and Cisco Controllers to Cisco Catalyst SD-WAN Control Components. See the latest Release Notes for a comprehensive list of all the component brand name changes. While we transition to the new names, some inconsistencies might be present in the documentation set because of a phased approach to the user interface updates of the software product. |
Feature Name |
Release Information |
Description |
---|---|---|
Forward Error Correction |
Cisco IOS XE SD-WAN Release 16.11.x |
Feature introduced. FEC is a mechanism to recover lost packets on a link by sending extra “parity” packets for every group of 4 packets. |
Forward Error Correction (FEC) is a mechanism to recover lost packets on a link by sending extra “parity” packets for every group of 4 packets. As long as the receiver receives a subset of packets in the group (at-least N-1) and the parity packet, up to a single lost packet in the group can be recovered. FEC is supported on Cisco IOS XE Catalyst SD-WAN devices.
Note |
We recommend Cisco IOS XE Release 17.6.3 as the minimum release when using FEC. |
The forward error correction is supported on all the Cisco IOS XE Catalyst SD-WAN devices.
Step 1 |
From the Cisco SD-WAN Manager menu, choose . |
Step 2 |
Click Centralized Policy and then click Add Policy. |
Step 3 |
Click Next. |
Step 4 |
Click Next again and then click Configure Traffic Rules. |
Step 5 |
Click Traffic Data, and from the Add Policy drop-down list, choose Create New. |
Step 6 |
Click Sequence Type. |
Step 7 |
From the Add Data Policy pop-up menu, choose QoS. |
Step 8 |
Click Sequence Rule. |
Step 9 |
In the Applications/Application Family List, choose one or more applications or lists. |
Step 10 |
Click Accept. |
Step 11 |
Click Actions and click Loss Correction. |
Step 12 |
In the Actions area, choose one of the following:
|
Step 13 |
Click Save Match and Actions. |
Step 14 |
Click Save Data Policy. |
Step 15 |
Click Next and take these actions to create a centralized policy:
|
Step 1 |
From the Cisco SD-WAN Manager menu, choose . Cisco vManage Release 20.6.x and earlier: From the Cisco SD-WAN Manager menu, choose . |
Step 2 |
Choose a device group. |
Step 3 |
In the left panel, click Tunnel, which displays under WAN. The WAN tunnel information includes the following:
|
Step 1 |
From the Cisco SD-WAN Manager menu, choose . Cisco Catalyst SD-WAN Control Components Release 20.6.1 and earlier: From the Cisco SD-WAN Manager menu, choose . |
||||
Step 2 |
Choose a device group. |
||||
Step 3 |
In the left panel, click SAIE Applications, which displays under Applications.
The FEC Recovery Rate application information includes the following:
|
Use the show sdwan tunnel statistics fec command to verify the FEC status on a Cisco IOS XE Catalyst SD-WAN device:
Device# show sdwan tunnel statistics fec
tunnel stats ipsec 80.80.10.19 80.80.10.25 12346 12366
fec-rx-data-pkts 0
fec-rx-parity-pkts 0
fec-tx-data-pkts 0
fec-tx-parity-pkts 0
fec-reconstruct-pkts 0
fec-capable true
fec-dynamic false
tunnel stats ipsec 80.80.10.19 80.80.10.50 12346 12346
fec-rx-data-pkts 122314
fec-rx-parity-pkts 30578
fec-tx-data-pkts 125868
fec-tx-parity-pkts 31467
fec-reconstruct-pkts 3
fec-capable true
fec-dynamic false
The following table describes the FEC counters related to the output shown in the show sdwan tunnel statistics fec command:
Name of Counter |
Description |
---|---|
fec-rx-data-pkts |
Displays the number of data packets received by the device. |
fec-rx-parity-pkts |
Displays the number of parity packets received by the device. |
fec-tx-data-pkts |
Displays the number of data packets sent by the device. |
fec-tx-parity-pkts |
Displays the number of parity packets sent by the device. |
fec-reconstruct-pkts |
Displays the number of received packets reconstructed by the device. |