windows:windows_time_service_ntp
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windows:windows_time_service_ntp [2025/10/07 09:39] – aperez | windows:windows_time_service_ntp [2025/10/07 12:08] (current) – aperez | ||
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- | ===== 🕒 NTP and DNS Configuration on Aruba 7220 (Houston, TX) ===== | + | ===== 🕒 NTP and DNS Configuration on Aruba 7220 (AOS 8.12, Houston, TX) ===== |
- | This configuration enables DNS resolution, adds reliable NTP sources, and applies Central Time with U.S. daylight saving rules. | + | Use IANA timezone names. For Houston, use '' |
<code bash> | <code bash> | ||
configure terminal | configure terminal | ||
- | ! DNS (hostname resolution) | + | ! DNS (opcional, para resolver FQDN) |
ip name-server 8.8.8.8 | ip name-server 8.8.8.8 | ||
ip name-server 1.1.1.1 | ip name-server 1.1.1.1 | ||
- | ! NTP servers (use IPs for best compatibility) | + | ! NTP servers (FQDN soportado si hay DNS) |
- | ntp server | + | ntp server |
- | ntp server | + | ntp server |
- | ntp server | + | ntp server |
- | ntp server | + | ntp server |
- | ! Time zone & Daylight Saving | + | ! Zona horaria IANA (Houston) |
- | clock timezone | + | clock timezone |
- | clock summer-time CDT recurring 2 Sun Mar 02:00 first Sun Nov 02:00 -6 | + | |
- | exit | + | end |
write memory | write memory | ||
</ | </ | ||
+ | |||
+ | ==== 🔍 Verificación ==== | ||
+ | <code bash> | ||
+ | show ntp servers | ||
+ | show ntp status | ||
+ | show clock | ||
+ | </ | ||
+ | |||
+ | **Esperado: | ||
+ | * Uno de los NTP marcado como peer activo. | ||
+ | * '' | ||
+ | ---- | ||
---- | ---- | ||
- | ==== 🔍 Verification | + | ===== 🕒 NTP and DNS Configuration on Arista 7050QX (EOS 4.13.x, Houston, TX) ===== |
- | Check NTP and clock status: | + | This configuration enables DNS resolution, adds public |
<code bash> | <code bash> | ||
- | show ntp servers | + | configure terminal |
- | show clock | + | |
- | show clock timezone | + | ip name-server 8.8.8.8 |
- | show clock summer-time | + | ip name-server 1.1.1.1 |
+ | |||
+ | ntp server 0.pool.ntp.org | ||
+ | ntp server 1.pool.ntp.org | ||
+ | ntp server 2.pool.ntp.org | ||
+ | ntp server 3.pool.ntp.org | ||
+ | |||
+ | clock timezone | ||
+ | |||
+ | end | ||
+ | write memory | ||
</ | </ | ||
- | **Expected:** | + | ---- |
- | * '' | + | |
- | * '' | + | |
- | * '' | + | ==== 🔍 Verification ==== |
+ | <code bash> | ||
+ | show ntp status | ||
+ | show ntp associations | ||
+ | show clock | ||
+ | </ | ||
+ | Expected: | ||
+ | * One server | ||
+ | * '' | ||
---- | ---- | ||
==== 🧠 Notes ==== | ==== 🧠 Notes ==== | ||
- | * '' | + | * '' |
- | * El controlador soporta NTP como cliente; puedes consultar/ | + | * '' |
- | * '' | + | |
- | * Si prefieres solo fuentes públicas muy estables, puedes reducir a dos: | + | * To force the source address, use **'' |
- | | + | * If NTP must traverse **VRF MGMT**, append **'' |
- | no ntp server 129.6.15.28 | + | |
- | no ntp server 132.163.96.5 | + | |
- | ntp server 216.239.35.0 | + | |
- | ntp server 162.159.200.1 | + | |
- | </ | + | |
- | * Tras cambios, espera unos minutos y revisa | + | |
+ | ---- | ||
+ | ---- | ||
+ | ===== 🕒 NTP and DNS on Cisco Catalyst 9500 (IOS XE 17.12) — Houston, TX ===== | ||
+ | |||
+ | DNS + NTP con zona horaria Central (CST/CDT). '' | ||
+ | |||
+ | <code bash> | ||
+ | conf t | ||
+ | ip name-server 8.8.8.8 | ||
+ | ip name-server 1.1.1.1 | ||
+ | |||
+ | ! NTP servers (FQDN soportado) | ||
+ | ntp server 0.pool.ntp.org | ||
+ | ntp server 1.pool.ntp.org | ||
+ | ntp server 2.pool.ntp.org | ||
+ | ntp server 3.pool.ntp.org | ||
+ | |||
+ | ! (Opcional) Fuente de NTP para dirección estable | ||
+ | ntp source Loopback0 | ||
+ | |||
+ | ! Zona horaria Houston (Central) + DST EE.UU. | ||
+ | clock timezone CST -6 | ||
+ | clock summer-time CDT recurring 2 Sun Mar 2:00 1 Sun Nov 2:00 | ||
+ | |||
+ | end | ||
+ | write memory | ||
+ | </ | ||
+ | |||
+ | ---- | ||
+ | |||
+ | ==== 🔁 (Opcional) Enviar NTP por el VRF de management ==== | ||
+ | Si tu salida a Internet va por **Mgmt-vrf**, | ||
+ | |||
+ | <code bash> | ||
+ | conf t | ||
+ | ntp source Loopback0 | ||
+ | ntp server vrf Mgmt-vrf 0.pool.ntp.org | ||
+ | ntp server vrf Mgmt-vrf 1.pool.ntp.org | ||
+ | ntp server vrf Mgmt-vrf 2.pool.ntp.org | ||
+ | ntp server vrf Mgmt-vrf 3.pool.ntp.org | ||
+ | end | ||
+ | write memory | ||
+ | </ | ||
+ | |||
+ | ---- | ||
+ | |||
+ | ==== 🔍 Verificación ==== | ||
+ | <code bash> | ||
+ | show hosts ! valida resolución DNS | ||
+ | ping 0.pool.ntp.org | ||
+ | show ntp associations | ||
+ | show ntp status | ||
+ | show clock detail | ||
+ | show run | i name-server|ntp|clock | ||
+ | </ | ||
+ | |||
+ | **Esperado: | ||
+ | * Un servidor con '' | ||
+ | * '' | ||
+ | * DNS resolviendo ('' | ||
+ | |||
+ | ---- | ||
+ | ==== 🧠 Notas ==== | ||
+ | * Si algún FQDN no resuelve, prueba primero con **IP** para descartar DNS. | ||
+ | * Asegura salida **UDP/123** desde la interfaz/ | ||
+ | * Puedes marcar un servidor como preferido: | ||
+ | < | ||
---- | ---- | ||
---- | ---- |
windows/windows_time_service_ntp.1759847989.txt.gz · Last modified: 2025/10/07 09:39 by aperez