Vyacheslav

How to specify a port for snmpwalk

Once I needed to perform snmpwalk with a non-standard SNMP port, since the devices that were polled were behind the same router, so the ports were forwarded to them.

Juniper. Configuring RPF in Dynamic Profiles

For example, I will configure unicast RPF (reverse-path forwarding) on Juniper MX204.
RPF allows you to reduce the impact of DOS-type attacks on IPv4 and IPv6 interfaces.

Configuring iBGP on Juniper MX

For example, I will configure Internal BGP on Juniper MX204. Since there are servers with Accel-ppp (ipoe) in the network and you need to balance users between these servers and Juniper, iBGP will transfer user routes with /32 mask from all devices to the main router/routers. iBGP is also needed when there are several links to Uplink providers that are connected to different routers, then you need to configure iBGP between these routers.

How to set up MikroTik CRS212-1G-10S-1S+ IN

For example, I will configure MikroTik CRS212-1G-10S-1S + IN as a switch.
And so, connect to it with a console cable at a speed of 115200.
Initially login admin without password.

Configuring MikroTIk CRS106-1C-5S

For example, I will set up MikroTIk CRS106-1C-5S. This device is a great budget switch that can also work as a router. In my case, it was perfect for an educational institution, there is a combo port on the back wall, which I configured as a WAN and the Internet was connected to it (from GPON ONU with a twisted pair cable), and managed switches were connected to the front 5 SFP ports.