Ntp stuck in init cisco

Author: fhdr

August undefined, 2024

Webntpdate can't syncrhonize. the machines can talk to one another, tested pings, and even tested netcat (sent a udp package on port 123 and it passed well). netstat shows that the server listens (but I needed to remove the -t option because ntp listens on udp port 123 and not tcp). – Omry Sep 21, 2009 at 13:18 Web2 apr. 2024 · 1 Answer. Your peers might be reachable by ping, but they aren't reachable by NTP, which is the important thing for clock sync. You may have a local, network, or ISP-level firewall blocking access. However, that doesn't explain your system clock freeze.

NTP Authentication Stuck on .INIT. : r/networking - Reddit

WebThis can occur when ntp is misconfigured to not listen for network connections properly. By design the ntp server is configured to open port 123. And it also needs random high port numbers to connect to the world. The main symptom is that ntp can discover upstream servers, but cant complete the connection to that. perry mason s4 e8

interpreting the show ntp assocations reach field - Cisco

Web19 mrt. 2014 · One possible reason for the pound sign is that the NTP client's clock differs by more than 4000 seconds from the NTP server's clock. On Cisco routers a time difference of greater than 4000 seconds is considered out of range, and prevents the router from syncing to the server. Web9 jan. 2024 · NTP servers are sync time OK. The client stuck on .INIT. step but sync manually works. The client ping and have allowed policies with NTP servers. Alls machines are in CentOS 7 version. # firewall-cmd --list-all public (active) target: default icmp-block-inversion: no interfaces: eth0 sources: services: dhcpv6-client ssh ntp ports: 443/tcp 123 ... Web6 mei 2007 · NTP synchronizes timekeeping among a set of distributed time servers and clients. With this synchronization, you can correlate events to the time that system logs … perry mason s4 ep15

ntp - Centos Linux stuck in time - Server Fault

Cisco IOS Clocks and NTP - PacketLife.net

WebHere's the problem... the switch won't sync up with the server to display the correct time, and the switch's IOS won't accept the command clock setso that I can bring the switch time closer to the NTP server time. Any thoughts? (The IOS isn't that old, I'd think that it should take the clock setcommand, but no such luck.) WebThe gateway is running in Azure and I tried setting up NTP to use 0.pool.ntp.org and 1.pool.ntp.org. While tcpdump showed packets coming and going, ntpd just sat there in .INIT. state. After a bit of reading I checked the associations and found the servers in state "reject" - ntpd found them "too far away" to be considered reliable sources. perry mason s5 e12Web13 mrt. 2016 · I have a Cisco 891 router that is not synchronizing with NTP servers. Four NTP servers are specified in the config: Router# show running-config include ntp ntp … perry mason s5 e12 cast

"Web6 apr. 2024 · If the network is isolated from the Internet, the Cisco implementation of NTP allows a machine to be configured so that it acts as though it is synchronized via NTP, when in fact it has determined the time using other means. Other machines can then synchronize to that machine via NTP. " - Ntp stuck in init cisco

Ntp stuck in init cisco

NTP Servers stuck in "init" state. - NetScaler VPX - Discussions

WebThere are a couple of things that could go wrong with NTP: NTP traffic filtered: access-lists could block NTP traffic. NTP Authentication issues: NTP supports authentication, client and server need to use the same settings. Time offset too high: When the time offset between client/server is too large it will take a very long time to synchronize. Web8 jun. 2012 · You can easily check if your Router is blocking NTP with the tool ntpdate (which is kind of a single use version of ntpd): ntpdate pool.ntp.org - this call behaves …

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WebThis is a complete guess but NTP uses a file /etc/ntp/step-tickers for the initial IP. Yours is reporting stratum 16 which means the other end is not responding. Now since Cisco … Web1 mei 2015 · Both machines have ntp built without ipv6 and kernels with CONFIG_IPV6 not set. Also replaced iptables output with the one of iptables -L -n -v. – tijagi May 2, 2015 at …

Web7 jul. 2014 · Cisco routers and switches can use 3 different NTP modes: NTP client mode. NTP server mode. NTP symmetric active mode. The symmetric active mode is used between NTP devices to synchronize with each other, it’s used as a backup mechanism when they are unable to reach the (external) NTP server. Web6 mei 2007 · If the network is isolated from the Internet, Cisco's NTP implementation allows a machine to be configured so that it acts as though it is synchronized using NTP, when it actually has determined the time using other methods. Other machines synchronize to that machine using NTP. Default NTP Configuration

Web13 mrt. 2016 · I have a Cisco 891 router that is not synchronizing with NTP servers. Four NTP servers are specified in the config: Router# show running-config include ntp ntp update-calendar ntp server 0.pool.ntp.org ntp server 1.pool.ntp.org ntp server 2.pool.ntp.org ntp server 3.pool.ntp.org These NTP servers are accessible from the router: WebThe NTP daemon doesn't die or stop, but it does quit synchronizing time after it fails to reach the remote server. This is why best practices will suggest minimum of three remote servers and not to use the LCL unless you are disconnected from the network.

Web20 dec. 2024 · On the ports that have layer 2 fiber connection, those ports are set to trunk and a routed VLAN is being trunked over that port. The ports do come up and OPSF does not go back the state of INIT. I did a debug on the OSPF and I get the following report from debug: Rcv hello from 10.200.201.242 area 200 10.200.202.1.

Web29 feb. 2024 · Installed Tardis2000 (Windows-based NTP server) on my laptop configured my switch (Catalyst 3750-X) as a client to sync with the NTP server.Even though the two … perry mason s5 e1Web6 feb. 2013 · You dont have to do nothing. For default, your ntp configuration will use the inet.0 table and any interface available in this table to reach the ntp server. Any source … perry mason s5 e18Web22 mei 2024 · The output of show ntp associations: - configured for the remote server IP, but not synced - the ref clock field says .INIT. - reach is 0. After reading some Cisco documentaiton, I believe a reach of 0 might indicate a problem with the syncing is occuring, and it maybe stuck in init state. perry mason s5 e15WebIf the network is isolated from the Internet, the Cisco implementation of NTP allows a machine to be configured so that it acts as though it is synchronized via NTP, when in fact it has determined the time using other means. Other machines can then synchronize to that machine via NTP. perry mason s5 e17Web27 jan. 2015 · In order to fix the issue, Cisco recommends you use a Linux-based external NTP server or Cisco IOS ® or IOS XE-based NTP server and ensure that NTPv4 is … perry mason s5 e18 castWeb18 okt. 2024 · As shown in the images you can find the commands used to access and modify the NTP servers within the CUCM server. The command utils ntp server list … perry mason s5 e21WebNTP Authentication Stuck on .INIT. For PCI compliance I needed to stand up NTP servers with Authentication. I was given two Red Hat boxes and I configured ntpd on each and … perry mason s5 e26