If your Power over Ethernet (PoE) device(s) connected to an EX 4300-48p switch suddenly lose power unexpectedly after some time working just fine, you may be experiencing PoE controller software issue. First of all, verify if you are not over your PoE power budget (this could be sometimes the case when you have a LOT… Read More »
If you want your SRX firewall to handle DNS requests on your network, you need to configure the forwarders to make this possible, in addition to a few other parameters. First, make sure you have no local forwarders set on the device itself as it cannot be used along with the dns-proxy service – if… Read More »
Having the following log error entry using the archival function to backup your configuration on your Juniper device? logger: transfer-file failed to transfer /var/transfer/config/re0.HostName_juniper.conf.gz_20181129_034459 I have experienced the following, where no further details provided, under the following conditions : – The backup server (ftp, sftp) is reachable and working properly – The credentials to the… Read More »
Encountered such issue in your log file of your Juniper network device? LIBJNX_FILE_SYSTEM_FAIL: /var/transfer/config/: No such file or directory This is most likely related to your configuration archival (backup), with such statement :
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set system archival configuration [transfer-on-commit | transfer-interval] set system archival configuration archive-sites "scp://user@IP_Address/path/to/folder" password "USER_Password" |
This is most likely caused by filesystem corruption and/or inexisting transfer folder on the filesystem. To resolve this issue, enter into… Read More »
Experiencing the following error while upgrading JunOS? Verify the signature of the new package verify-sig: cannot validate certs.pem certificate is not yet valid: /C=US/ST=CA/L=Sunnyvale/O=Juniper Networks/OU=Juniper CA/CN=PackageProductionRSA_2018/emailAddress=ca@juniper.net ERROR: Package signature validation failed. Aborting install. This error could be caused by incorrect date and time set on your device (back in time). To validate the current value,… Read More »
Experiencing the following alarm event log on your Juniper EX switch? Alarm time Class Description 2016-01-20 07:12:04 UTC Major Upgrade bank is empty or corrupted for FPC 0, please do standard upgrade sequence This is likely because your switch was running an inferior JunOS version than 10.4r3 and it was upgraded to a greater version,… Read More »
You are probably used to all these “get my IP” or “find my IP” kind of site, which show your external / Internet IP on a Web page. However you might be facing some challenge if you are on a CLI only kind of machine. Fortunately there is a few ways to find your public… Read More »
Here is a step-by-step procedure how to upgrade the JunOS image on your Juniper EX, QFX or MX device. You may get the JunOS software from the vendor, creating an account and adding your device serial number to it in order to access the software download. It is very important that you use the right… Read More »
Having the following notification on the console output after booting your Juniper EX switch? WARNING: JUNOS versions running on dual partitions are not same This might have been caused by an incomplete/failed upgrade of JunOS. Either way, unless this is the result of an action made on purpose, it is important that both slices have… Read More »
By default, all QSFP+ ports on the EX4300 chassis are configured as virtual chassis ports (vcp). VC minimal (recommended) requirement is two ports, meaning that two out of the four ports can be used as regular 40 Gbps interfaces and/or for uplink purpose. Let’s assume we want to use the port #0 and 1 as… Read More »