Networking, system administration and more
Networking, system administration and more
When attempting to install a Juniper vMX router (release 18.3R1-S1.4) on a newly installed Centos 7.2 host I got the following error: When I checked the supported machine types with /usr/libexec/qemu-kvm -machine help everything looked fine, pc-i440fx-rhel7.0.0 was listed as the default: The error gmem.c:489: custom memory allocation vtable not […]
Read moreIf Active Directory is out of sync, you can force a pull or push replication event from a domain controller. Push (push all changes from the domain controller to other domain controllers): Pull (pull all chnages from other domain controllers to this domain controller): Explanation The CLI flags are: /A: […]
Read moreUPDATE: A new copy of the i40e driver has been provided by Juniper (unofficially). You can try this at your own risk, see here for details. When using a Juniper vMX with a Intel X520 or Intel X710 based card and SR-IOV, under load the vFPC may crash. This seems […]
Read moreThese steps will configure IPv6 on a network adapter using Powershell. Adding an IPv6 address Make sure Powershell is launched with Administrator permissions. Get the ifIndex for the network adapter that you want to configure the IPv6 address on: In this case we would like to add the IPv6 settings […]
Read moreWith VMWare 6.7U1 now released I decided to upgrade a small cluster of servers to the new release. As I run VMWare vCenter (the appliance version) I also wanted to upgrade that. The first issue I can into is the appliance showed no updates available. From the “Update” tab on […]
Read moreI experienced a strange issue after making some configuration changes to a Juniper MX104 device with a MS-MIC-16G installed. After removing some NAT rules the services interface that the NAT service was attached to started doing a large amount of traffic. The same change was made on a second router […]
Read moreRecently Juniper has released version 18.2R1 of the vSRX appliance. When I have tried to deploy the OVA file on an ESXi 6.7 host the deployment failed. The first indication of an issue is on step 5 of creating a new virtual machine, the deployment type shows as “undefined – […]
Read moreping6 can be used on Linux hosts to ping the “allhosts” address, ff02::1. If you try running ping6 ff02::1 with no arguments you will get an error like connect: Invalid argument, instead you must provide the interface to ping from with the -I argument. As an example, to ping all […]
Read moreThese are some common commands that are used when managing LVM devices. Volume Groups Create a volume group: vgcreate vg0 /dev/sda3 [/dev/sdb /dev/sdc /dev/sdd …] Logical Volumes Create a LV: lvcreate -n LV-NAME -L 30G VG-NAME Delete a LV: lvremove -n LV-NAME VG-NAME
Read moreDuring an install of the Network Policy and Access Services role on a server I was getting the error code 0x800f0922 and the installation was failing. The error from the Add Roles and Features wizard looked like this: To install it instead I had to run the following commands from […]
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