If your Juniper device indicate an alarm status (red light shown on the unit), you can run the following command to find out the details :
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show system alarm |
And the following output is shown: 1 alarms currently active Alarm time Class Description 2021-10-19 03:06:00 UTC Minor Autorecovery information needs to be saved This mean that your… Read More »
While adding a new security zone on your SRX firewall, you may encountered the following error while committing your changes: [edit security zones security-zone VLAN1] ‘interfaces irb.1’ Interface irb.1 must be configured under interfaces error: configuration check-out failed This is a common mistake where the irb interface configuration was forgotten. For those unfamiliar with the… Read More »
If you have a HPE Comware switch stack, you may at some point need to access the CLI of a particular unit member in the stack for troubleshooting purpose. When running a switch stack, when accessing the CLI, the commands will always perform actions on the unit running as “master”, so this easy tutorial will… Read More »
In this article we will cover the procedure to reset a Cisco Catalyst to factory default settings. This will wipe out the current configuration written in flash and also the VLan database file as well. 1. Connect the switch serial console port to a computer and open up a terminal so you can see the… Read More »
The following error message may happen from time to time when attempting to load new software version in Palo Alto Firewall or Panorama : Successfully downloaded Preloading into software manager Error: Image File Authentication Error Failed to load into software manager. Please retry. Post processing failed. Please retry PanOS always do software image integrity check… Read More »
Encountering the following log event on your Juniper MX router? fpc0 qsfp-0/0/0 failed to init hw This could be caused by various factors, such as : Defective FPC Defective PIC Defective transceiver Incompatible transceiver* *I have observed this error on customer equipment when DAC cables were used. The Juniper MX series does not officially support… Read More »
This article will explain how to add a security zone with a dedicated VLan, DHCP scope and DNS proxy rule. For the purpose of this example, we will add a guest zone with the following parameters : VLan ID : 40 Subnet : 10.10.40.0/24 Gateway IP (layer 3 interface) : 10.10.40.1 DHCP Scope : 10.10.40.128/25… Read More »
If you have an Intel card and the necessary “Advanced Network Services (ANS)”, that is bundled with the Intel driver, you have the capability to manage VLans for your network interface with PowerShell. 1. Use the “ipconfig” command to find out the name of your adapter. Example :
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PS C:\WINDOWS\system32> ipconfig Windows IP Configuration Ethernet adapter Ethernet0: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 10.1.1.50 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.1.1.1 |
In that case, our adapter name… Read More »
Here is how to configure DHCP relay on the QFX platform. 1. Define a DHCP server group with DHCP servers IP address(es) :
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set forwarding-options dhcp-relay server-group <server-group-name> <ip.address> |
Example : If you want to name the group as “PRD-dhcpSrv” and the IP of the server is 10.1.1.10 :
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set forwarding-options dhcp-relay server-group PRD-dhcpSrv 10.1.1.10 |
Note : You can add as many DHCP server as… Read More »
If you are running a Virtual Chassis on EX, QFX or MX platform and end up in a situation where one of the vc-port show up on one unit, and down on the other, this lecture is for you! Let’s do a quick recap on the behavior : 1. Interface set as vc-port (SFP+ or… Read More »