User Guide for CISCO models including: SD-WAN, SD-WAN Configure vEdgeDevice AnNTP Parent, Configure vEdgeDevice AnNTP Parent, vEdgeDevice AnNTP Parent, AnNTP Parent, Parent
Systems and Interfaces Configuration Guide, Cisco SD-WAN Release 20.x - Configure a Cisco vEdge Device as an NTP Parent [Cisco SD-WAN] - Cisco
Configure a Cisco vEdge Device as an NTP Parent Table 1: Feature History Feature Name Release Information Feature Description Configure a Cisco vEdge Cisco SD-WAN Release 20.4.1 This feature enables configuring a Cisco Device as an NTP Parent and Optionally to Support NTP in Cisco vManage Release 20.4.1 vEdge device as an NTP parent and configuring the device to support NTP in Symmetric Active Mode. symmetric active mode. You can configure a Cisco vEdge device as an NTP parent. You also can configure an NTP parent device to support NTP in symmetric active mode. · Configure an NTP Parent, on page 1 · Configure Support for NTP in Symmetric Active Mode, on page 2 Configure an NTP Parent Starting with Cisco SD-WAN Release 20.4.1, you can configure a supported Cisco vEdge device as an NTP parent device by using the device CLI template. A device that is configured in this way acts as the NTP server to which other nodes in the deployment synchronize their clocks. You can configure multiple devices as NTP parents. The NTP server functionality is supported for IPv4, but not for IPv6. You also can configure a device that is configured as an NTP parent device to support NTP in symmetric active mode. See "Configure Support for NTP in Symmetric Active Mode." Use the following commands to configure device as an NTP parent device using a Cisco vEdge device device CLI template. For more information about configuring device CLI template, see "Create a Device CLI Template" in Systems and Interfaces Configuration Guide. Device# config terminal Device(config)# system Device(config-system) ntp Device(config-ntp)# parent Device(config-parent)# enable Device(config-parent)# source-interface loopback511 Device(config-parent)# stratum 6 Device(config-parent)# vpn 511 Device(config-parent)# exit Configure a Cisco vEdge Device as an NTP Parent 1 Configure Support for NTP in Symmetric Active Mode Configure a Cisco vEdge Device as an NTP Parent Restrictions and Limitations · You can configure a device as an NTP parent only through a Cisco vManage CLI template. Cisco vManage feature templates do not support this configuration. · The source interface must be in the same VPN that the vpn keyword defines. Verify Configuration Use the following show command to verify NTP parent configuration. The sample output shows that the server also is configured to support NTP in symmetric active mode. Device# show running-config system ntp system ntp keys authentication 101 md5 $8$vV6PtHeLdiEcLqDNLqV/mCWN5X92yT8PUPOwDCQgS4c= authentication 108 md5 $8$NTzFC6sRZiFUYeHw/pOY2dEoiO6dxphecDs7YnRKeuY= trusted 101 108 ! parent enable stratum 6 source-interface loopback511 vpn 511 exit server 10.20.25.1 source-interface ge0/1 vpn 511 version 4 exit peer 172.16.10.100 key 101 vpn 511 version 4 source-interface ge0/1 exit Configure Support for NTP in Symmetric Active Mode Starting with Cisco SD-WAN Release 20.4.1, you can configure a Cisco vEdge device that is configured as an NTP parent to support NTP in symmetric active mode by using the device CLI template. When a device is configured in this way, it synchronizes its time with another device that is defined with this mode if it cannot reach its original NTP parent. Use the following commands to configure a device to support NTP in symmetric active mode by using a Cisco vManage device CLI template. For more information about configuring device CLI template, see "Create a Device CLI Template" in Systems and Interfaces Configuration Guide. Device# config terminal Device# system Device(config-system) ntp Device(config-ntp)# peer 172.16.10.1 Device(config-peer)# key 101 Device(config-peer)# vpn 511 Device(config-peer)# version 4 Device(config-parent)# source-interface ge0/1 Device(config-parent)# exit Configure a Cisco vEdge Device as an NTP Parent 2 Configure a Cisco vEdge Device as an NTP Parent Configure Support for NTP in Symmetric Active Mode Restrictions and Limitations · You can configure a device support NTP in symmetric active mode only through a Cisco vManage CLI template. Cisco vManage feature templates do not support this configuration. · You can configure up to two devices to support NTP in symmetric active mode. · A device that is configured as an NTP peer should also be configured as an NTP parent. · The source interface must be in the same VPN that the vpn keyword defines. · Each peer must use the same source interface. Use the following show command to verify NTP parent functional configuration. In the show ntp peer command output, the server with the .LOCL. REFID is the NTP parent. Device# show ntp peer INDEX REMOTE REFID ST TYPE WHEN POLL REACH DELAY OFFSET JITTER -------------------------------------------------------------------------- 1 *10.20.25. 1 .GNSS. 1 u 186 1024 377 226.712 0.793 2.381 2 172.16.10.1 (loop) 3 s 760 1024 376 0.126 -1.307 1.397 3 172.16.10.10 .LOCL. 6 l 52h 64 0 0.000 0.000 0.000 Configure a Cisco vEdge Device as an NTP Parent 3 Configure Support for NTP in Symmetric Active Mode Configure a Cisco vEdge Device as an NTP Parent Configure a Cisco vEdge Device as an NTP Parent 4DITA Open Toolkit XEP 4.30.961; modified using iText 2.1.7 by 1T3XT