I once noticed that the port is periodically disconnected on the Cisco Nexus N3K-C3064PQ-10GX switch, there are a lot of records in the logs that the link was falling and rising, I looked at the status of the port:
Continue reading “linkFlapErrDisabled on Cisco Nexus”Category Archives: Hardware
Huawei S3928P-EI firmware update
I will give an example of updating the firmware of the Huawei Quidway S3928P-EI switch.
Continue reading “Huawei S3928P-EI firmware update”Reboot iLO via SSH
Once I tried to open the iLO5 web interface on the HP DL380 Gen10 server and it did not open, hung on the login and password entry page, or immediately after it, iLO5 version was 2.63.
Continue reading “Reboot iLO via SSH”Configuring Juniper MX and ABillS
For example, I will configure the Juniper MX204 to work with the ABillS billing system.
Continue reading “Configuring Juniper MX and ABillS”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.
Continue reading “Configuring iBGP on Juniper MX”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.
Continue reading “Configuring MikroTIk CRS106-1C-5S”Configuring OSPF on Juniper MX
For example, I will configure OSPF on Juniper MX204.
Continue reading “Configuring OSPF on Juniper MX”Juniper. Solution of failing auto-image upgrade
I was setting up a Juniper QFX5100 once and noticed persistent messages:
Continue reading “Juniper. Solution of failing auto-image upgrade”