CISCO Router Interface Coomands - interface

I am reading book 'CCNA Routing and Switiching Study Guide - Lammle, Todd' wherein there was a command to create an interface (int f0/0).
On CISCO Router command when I am giving a command
Corp(Config)#int f0/0
It is displaying error message as "Invalid interface type and number". Please help me with this command.

If you are working on packet tracer or gns3, go to the arrow on the router to show interface name. Or you can write this command:
corp # show ip interface brief
to find out the interfaces available to you.

Your router doesn't have a module with a port named ' int f0/0 ' , turn off the router in your simulator (Packet tracer, GNS3..) and try to add a module wish have a port with 'int f0/0' ,otherwise, try to understand which port type and number your router has.
Tyr this command in ur CLI: show ip interface brief if it doesn't show u nothing try this 'do show ip interface brief'

when you are in global configuration mode type
hit this coomand:
do show ip int brief
Ip int (put the interface name) and configure it

Well its totally depends on your router's module name...First check the module name by using command show ip interface brief in privilege mode.. if your router have module with f0/0 then only router will enter interface f0/0..

Related

How to name IP addresses on micro webserver

I have an stm32H743 micro controller webserver (Cubeide LWIP) which displays a small webpage on my local LAN.
When I look at the router page, I see that all local IP's have a name associated with them.
Ethernet: COM-MID1 80:c7:55:94:12:14 192.168.1.115
STM32 00:80:e1:01:00:23 192.168.1.75
My question is - how do I change the name 'STM32' in my webserver code?
As you may imagine, there are thousands of references in my source code and I cant find the corresponding one. Where is it likely to be?
Thanks
Chris
Could it be that your router is presenting client host names from DHCP option 12?
With lwIP, you can specify the DHCP client host name by #defining the LWIP_NETIF_HOSTNAME option and then setting the hostname-field in the netif struct.

ssh not working when changing static ip address in dhcpcd.conf (raspberry pi)

This is probably a basic question for anyone versed in networks, but very esoteric for me.
I have two raspberry pi 4 (connected in a local network throught a fast switch (netgear fs108). If i read the ip adresses given by default to the raspberries (via hostname -I) i obtain a address that allows me to do ssh betwen the raspberries without any problem (the degault adresses are the same provided that i always connect the raspberries to the same switch ports), but i would like to asign different ip addresses. Following several tutorials, i modify the dhcpcd.conf by adding the lines
interface eth0
static ip_address=192.168.5.11/24. #192.168.5.12/24 in the second raspberry
after reboting, if i verify the new up address
hostname -I
i obtain the assigned address, but when i try to connect via ssh, with:
ssh pi#192.168.5.11
the terminal does nothing (not asking password, neither failing)
In some tutorials, i see that also the fields
static routers, and static domain_name_servers are added to the dhcpcd file, but i do not know what they are, and obviously adding the sme numbers that i see in tutorials (just to try) makes that event the
hostname -I
command does not give the address anymore.
Are those two fiels necessary, and if yes, how can Iknow which values I sould give? there is nothing written in my switch.
follwowing on this, if i change the switch and use a 'proper' router, i would need to change those values?
Thanks in advance.

No internet through GSM connection, possible interface issue

I have a problem with getting GSM connection to work.
Currently used:
Advantech UNO-2272G device
Ubuntu 18.04
NetworkManager/nmcli package
The card works when put in a mobile phone.
*Note: following screenshots are made over SSH and remotely, as the device is currently plugged in ethernet until this issue is resolved.
This is current state of "nmcli" command:
nmcli print
The system connection for GSM is called "radi". My guess is that somehow the interface of that connection is trying to work with the other interface (underlined in red), which in turn is trying to get its DNS conf from router (to which it currently is connected with ethernet, but nothing changes if device is plugged out from router and NetworkManager and network is restarted, it still tries to get to router for its DNS).
This is current state of "ip addr" command:
ip addr
This is current state of /etc/network/interfaces file:
interfaces
This is current state of /etc/NetworkManager/system-connections/radi file:
systemconnection
So, the question is, what am I missing here? Is it the interface issue as written above, or something else entirely?
Disclaimer: I am not that proficient in the stuff presented here, most if not all of it was configured following guidelines on the internet.
Hey I'm not expert in this but I do have a different cellular modem connected to a linux system (RPI) and working with NetworkManager (and ModemManager). My modem was connected by a serial UART port (ttyACM0) so that seems similar to what you have done.
When I configured my cellular connection profile in NM I had to setup the ppp section of the connection profile on top of the gsm part. I also went into my ppp options (on the host) and configured those to match a chat script that came from my modem manufacturer. WHen NetworkManager runs a ppp interface it expects the ppp options for the pppd (daemon) to be configured properly.
Here is the ppp section of my NetworkManager cellular connection settings file. Most are defaults and in my case I only added the baud rate for my modem (since it was connected to a UART).
ppp.noauth: yes
ppp.refuse-eap: no
ppp.refuse-pap: no
ppp.refuse-chap: no
ppp.refuse-mschap: no
ppp.refuse-mschapv2: no
ppp.nobsdcomp: no
ppp.nodeflate: no
ppp.no-vj-comp: no
ppp.require-mppe: no
ppp.require-mppe-128: no
ppp.mppe-stateful: no
ppp.crtscts: no
ppp.baud: 115200
ppp.mru: 0
ppp.mtu: auto
ppp.lcp-echo-failure: 0
ppp.lcp-echo-interval: 0
If this is not helpful then have a look at this thread on NM and routing. In their case eth0 was a local network interface and eth1 was their cellular interface
Now to save you 10 hours of troubleshooting - note that the route
metric is independent of the DNS priority! So if you still have
connectivity issues, make sure it's not a DNS resolution issue (eg.
your DHCP server is providing a dummy resolution service). If it is,
then increase the ipv4.dns-priority of your eth0 connection to make it
lower priority, and/or make sure the ipv4.dns-search of your eth1 is
set to "~" to make it the go-to option.

How to set the PC/PG interface in Step7?

My question is how to set the pc/pg interface in Step 7? I know the PLC's IP but it seems that the program is unavailable to find the PLC in the list of available devices. I am using TCP/IP connection so it would be ideal if I could receive some steps in configuring the interface the right way.
Double­click on "Setting PG/PC Interface" in the "Control Panel" of Windows.
Set the "Access Point of Application" to "S7ONLINE."
In the list "Interface parameter set used", select the required interface parameter set. If the required interface parameter set is not displayed, you must first install a module or protocol via the "Select" button. The interface parameter set is then generated automatically. On plug-and-play systems, you can not install plug and play CPs manually (CP 5611 and CP 5511). They are integrated automatically in "Setting PG/PC Interface" after you have installed the hardware in your PG/PC.
If you are using TIA Portal, you might want to look into Control Panel / Communication Settings.
If you want to connect with a LAN cable to the PLC's Ethernet/Profinet port you must select your Network Card in the PG/PC Interface (or Communication Settings).
After that you should use a fixed IP address on your Network Card.
If the PLC has IP 192.168.0.1 and subnet mask 255.255.255.0 you should set 192.168.0.2 and the same subnet mask.
For this, go to your Network Adapters list. In Windows10 it's Control Panel\Network and Internet\Network Connections
Then right click your Network Card -> Properties
Go to Internet Protocol Version 4 (TCP/IPv4) Properties and enter manually your IP address.
To test the communication open Command Prompt and ping the PLC (eg. "ping 192.168.0.1").
Then probably you will be able to connect to the PLC.

How to change IP of your server access from 0.0.0.0:8181 in Perfect 2.0?

I'm new to server side programming, Since Perfect is out for Swift i am trying to get started with it.
I started PerfectTemplate and it's working on http://0.0.0.0:8181 but not accessible using my public ip i.e. say for example http://123.45.67.89:8181
Command+Click property "serverPort" it will take you to the implementation of HTTPServer.swift. There is another property "serverAddress" which is set to "0.0.0.0" by default.
you can change this by adding the following line
server.serverAddress ="123.45.67.89"
just above where you set
server.serverPort = 8181
However the new IP must be you're localhost IP found in system network preference. public IP address won't work in this case.
See the attached screen shot.