Specific Switch Configurations
Cisco SG300
Arista (PTP E2E)
Artel Video Systems ARG Quarra Switches
Cisco SG300
Navigate to Port Management –> Port Settings and disable Jumbo Frames:
Navigate to Port Management –> Green Ethernet –> Properties and disable Energy Efficient Ethernet:
In Spanning Tree –> STP Status and Global Settings enable Spanning Tree, set the mode to Rapid Spanning Tree and set the BPDU Handling to Filtering:
Navigate to Multicast –> Properties and enable Bridge Multicast Filtering Status:
In Multicast –> IPv4 Multicast Configuration –> IGMP Snooping enable IGMP Snooping Status and IGMP Querier Status:
Choose to edit the settings for the relevant VLAN. Enable the IGMP Snooping Status, enable the MRouter Ports Auto Learn (for audio networks only), enable Immediate Leave (if certain that all devices implement it correctly).
Enable IGMP Querier Status and IGMP Querier Election. Set IGMP Querier Version to 2 and set the Querier Source IP Address to Auto:
Navigate to Multicast –> Multicast Router Port and set all ports to None:
Navigate to Multicast –> Forward All and set all ports to None:
Navigate to Multicast –> Unregistered Multicast and set all ports to Filtering:
In Quality of Service –> General –> Properties set the QoS mode to Advanced:
Navigate to Quality of Service –> General –> Queue and set all queues to Strict Priority:
In Quality of Service –> General –> DSCP to Queue set DSCP 56 (CS7; PTP packets) to queue 4 (highest priority), DSCP 46 (EF, essence streams) to queue 3 and everything else to queue 1 (lowest priority):
Navigate to Quality of Service –> QoS Advanced Mode –> Global Settings and set the Trust Mode to DSCP:
Remember to save your configuration!
Arista (PTP E2E)
Note: replace the bold values by the correct values for your infrastructure. These commands need to be issued in the correct context of the switch OS.
The following configuration is valid for all Arista switches tested.
hostname arista7150
username admin secret admin
interface management 1
ip address 192.168.2.1/24
interface Vlan 1
ip address 192.168.1.1/24
ip igmp snooping
ip igmp snooping vlan 1
ip igmp snooping report-flooding
ip igmp snooping vlan 1 report-flooding
ip igmp snooping report-flooding switch-port Ethernet 1-22
ip igmp snooping querier
ip igmp snooping vlan 1 querier
ip igmp snooping querier address 192.168.1.1
ip igmp snooping vlan 1 querier address 192.168.1.1
ip igmp snooping querier version 2
ip igmp snooping vlan 1 querier version 2
ip igmp snooping querier query-interval 30
ip igmp snooping vlan 1 querier query-interval 30
no ip igmp snooping vlan 1 immediate-leave
ptp mode p2ptransparent
ptp source ip 192.168.1.1
interface Ethernet 1-24
ptp enable
Artel Video Systems ARG Quarra Switches
The Artel Video Systems ARG Quarra switches (formerly ARG) have only been tested for AES67 audio by Lawo, but are reported to support video with a SMPTE 2059-2 PTP timing.
Navigate to Configuration –> IPMC –> IGMP Snooping –> Basic Configuration and set parameters as follows:
Navigate to Configuration –> IPMC –> IGMP Snooping –> VLAN Configuration and set parameters as follows:
Navigate to Configuration –> QoS –> Port Classification and set the parameters as follows:
Navigate to Configuration –> QoS –> DSCP-based QoS and set the highest queue (7) for the DSCP value used for PTP, the second highest queue (6) for the RTP audio streams.
If using the ARG switch as a PTP clock, navigate to Configuration –> PTP and choose to “Add new PTP clock”. Set the parameters as follows:
Click the “0” under Clock Instance and set the parameters as follows (don’t forget to adjust the DSCP values):
For more details, check Artel’s complete Setup Guide and Switch Manual:
