Network Configuration on RHEL

Network Configuration on RHEL

 

Check which switch is connected with your adapter

tcpdump -nn -v -i bond0 -s 1500 -c 1 ‘ether[20:2]==0x2000’

 

*change bond0 with your interface name

 

Check bond which interface is on active mode

cat /sys/class/net/bond0/bonding/active_slave

 

Check the current status of bonding interfaces

check /proc/net/bonding/bond#

 

Check switch adapter status

systool -c fc_host -v |grep port_state

 

 

 

 

Network Manager CLI

To see current status

ip addr

nmcli connection show

nmcli device status

nmcli general status (current status to the connectivity)

nmcli general logging (current logging status)

nmcli device show

nmcli device show “device_name” (for one specific device)

 

Create new network profile

nmcli connection add type ethernet con-name “name_of_profile” ifname “interface_name_to_be_used”

 

Modify new network profile

nmcli connection modify “interface_name” ipv4.addresses “ip_addr/subnet” ipv4.gateway “gateway_ip_addr” ipv4.dns “dns_ip_addr” +ipv4.dns “dns_ip_addr” connection.autoconnect yes ipv4.method manual

 

this will create new interface_name with ip address with subnet, and gateway with 2 dns ip address, autoconnect on boot with static method

 

Bring network interface up

nmcli connection up “interface_name”