Show BGP advertised routes on MikroTik RouterOS 7
RouterOS 7 now has a direct command to show the routes advertised to a BGP peer: /routing/bgp/advertisements print. An update to my earlier workaround.
-
-
Configure SNMP on Proxmox VE
Install snmpd on a Proxmox host, give it a minimal read-only configuration limited to one monitoring server, and start it at boot.
-
Red Hat restricts access to the RHEL source code
In June 2023 Red Hat stopped publishing RHEL sources on git.centos.org. My take on what it means for Rocky Linux, AlmaLinux, Oracle Linux and open source.
-
Fix the "setlocale: LC_CTYPE: cannot change locale (UTF-8)" warning
Logging in over SSH from a Mac to a CentOS server prints a setlocale LC_CTYPE warning. Setting LC_CTYPE in /etc/environment and generating the locale fixes it.
-
Exchange HTTP error 400 and event ID 15021 after a reboot
After a reboot, Exchange returned HTTP 400 and logged event 15021 for 0.0.0.0:444. The Exchange Back End site in IIS had lost its certificate binding.
-
Hyper-V networking: MAC addresses, adapter names and VLANs
PowerShell commands to find the MAC address of a Hyper-V virtual machine's adapters, rename an adapter, and configure it as a VLAN trunk.
-
How the internet really works: IP transit, peering and provider tiers
How ISPs connect to each other through peering and paid IP transit, what Tier-1, Tier-2 and Tier-3 providers are, and why two providers on two routers is the topology to aim for.
-
BGP and RPKI: why you should implement route origin validation
BGP trusts whatever routes its neighbours announce. RPKI lets you sign which AS may originate your prefixes and drop announcements that contradict it. What it protects against, what it does not, and how to deploy it.
-
Measuring bandwidth usage: 95th percentile, CIR and actual usage
How 95th percentile billing works, why the top 36 hours of the month are free, and how it compares with a committed information rate and volume-based billing.
-
What umask is and how it works
How Linux permissions are written, how umask removes permissions from new files and directories, and how to read a value such as 022 or 027.
