Difference between ip and ifconfig command
Comparing the diferrence between the Network Configuration of ifconfig vs ip
' ifconfig' is used to configure, display and control network interfaces. ' ip' command is a new alternative now exists on Linux distributions which is much more powerful than it. In this article we will discuss the differences between the ip and ifconfig command.
Various tasks that ifconfig performs are
- Removing, Adding ARP Cache entries to create new Static ARP entry for a host.
- Modifying and displaying kernel routing tables.
- Modifying or displaying Interface properties.
To Display all Network Interfaces in Linux
Run the following command to display all network interfaces.
ifconfig command
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:67
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING NOARP PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
RX packets:723675 errors:0 dropped:0 overruns:0 frame:0
TX packets:263635 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:735413931 (701.3 MiB) TX bytes:18694734 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
ip command
[root@linuxhelp ~]# ip a
1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: < BROADCAST,MULTICAST,NOARP,ALLMULTI,PROMISC,UP,LOWER_UP> mtu 3000 qdisc pfifo_fast state UP qlen 2500
link/ether 00:0c:29:0f:82:67 brd ff:ff:ff:ff:ff:ff
inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0
inet6 fe80::20c:29ff:fe0f:8267/64 scope link
valid_lft forever preferred_lft forever
To Add or Delete an IP in Linux
The following script adds, the IP 192.168.5.123 to the interface eth0.
ifconfig command
[root@linuxhelp ~]# ifconfig eth0 add 192.168.5.123
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:67
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING NOARP PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
RX packets:730831 errors:0 dropped:0 overruns:0 frame:0
TX packets:263647 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:737489856 (703.3 MiB) TX bytes:18695522 (17.8 MiB)
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:67
inet addr:192.168.5.123 Bcast:192.168.7.255 Mask:255.255.255.0
UP BROADCAST RUNNING NOARP PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
[root@linuxhelp ~]# ifconfig eth0 del 192.168.5.123
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:67
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING NOARP PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
RX packets:736546 errors:0 dropped:0 overruns:0 frame:0
TX packets:263674 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:738770733 (704.5 MiB) TX bytes:18697356 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
ip command
[root@linuxhelp ~]# ip a add 192.168.5.123 dev eth0
[root@linuxhelp ~]# ip a
1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: < BROADCAST,MULTICAST,NOARP,ALLMULTI,PROMISC,UP,LOWER_UP> mtu 3000 qdisc pfifo_fast state UP qlen 2500
link/ether 00:0c:29:0f:82:67 brd ff:ff:ff:ff:ff:ff
inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0
inet 192.168.5.123/32 scope global eth0
inet6 fe80::20c:29ff:fe0f:8267/64 scope link
valid_lft forever preferred_lft forever
[root@linuxhelp ~]# ip a del 192.168.5.123 dev eth0 Warning: Executing wildcard deletion to stay compatible with old scripts. Explicitly specify the prefix length (192.168.5.123/32) to avoid this warning. This special behaviour is likely to disappear in further releases, fix your scripts! [root@linuxhelp ~]# ip a 1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: < BROADCAST,MULTICAST,NOARP,ALLMULTI,PROMISC,UP,LOWER_UP> mtu 3000 qdisc pfifo_fast state UP qlen 2500 link/ether 00:0c:29:0f:82:67 brd ff:ff:ff:ff:ff:ff inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0 inet6 fe80::20c:29ff:fe0f:8267/64 scope link valid_lft forever preferred_lft forever
To Enable or Disable Network Interface
ifconfig command
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:99
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
RX packets:494375 errors:0 dropped:0 overruns:0 frame:0
TX packets:263534 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:638763636 (609.1 MiB) TX bytes:18687410 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
[root@linuxhelp ~]# ifconfig eth0 down
[root@linuxhelp ~]# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
[root@linuxhelp ~]# ifconfig eth0 up
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:99
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8299/64 Scope:Link
UP BROADCAST RUNNING PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
RX packets:501628 errors:0 dropped:0 overruns:0 frame:0
TX packets:263565 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:641694392 (611.9 MiB) TX bytes:18689665 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
ip command
The output of " ip a" script shows all the interfaces as default, either down or up, but have to highlights the status along with description.
[root@linuxhelp ~]# ip a
1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0:< BROADCAST,MULTICAST,ALLMULTI,PROMISC,UP,LOWER_UP> mtu 3000 qdisc pfifo_fast state UP qlen 2500
link/ether 00:0c:29:0f:82:99 brd ff:ff:ff:ff:ff:ff
inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0
inet6 fe80::20c:29ff:fe0f:8299/64 scope link
valid_lft forever preferred_lft forever
[root@linuxhelp ~]# ip link set eth0 down
[root@linuxhelp ~]# ip a
1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
[root@linuxhelp ~]# ip link set eth0 up
[root@linuxhelp ~]# ip a
1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: < BROADCAST,MULTICAST,ALLMULTI,PROMISC,UP,LOWER_UP> mtu 3000 qdisc pfifo_fast state UP qlen 2500
link/ether 00:0c:29:0f:82:67 brd ff:ff:ff:ff:ff:ff
inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0
inet6 fe80::20c:29ff:fe0f:8267/64 scope link
valid_lft forever preferred_lft forever
To Add MAC Hardware Address to the Network Interface
To check the HW addr value in the output.
ifconfig command
[root@linuxhelp ~]# ifconfig eth0 hw ether 00:0C:29:0F:82:89
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:89
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING NOARP PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
RX packets:753372 errors:0 dropped:0 overruns:0 frame:0
TX packets:263697 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:744557176 (710.0 MiB) TX bytes:18699014 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
ip command
[root@linuxhelp ~]# ip link set dev eth0 address 00:0C:29:0F:82:99
[root@linuxhelp ~]# ip a
1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: < BROADCAST,MULTICAST,NOARP,ALLMULTI,PROMISC,UP,LOWER_UP> mtu 3000 qdisc pfifo_fast state UP qlen 2500
link/ether 00:0c:29:0f:82:99 brd ff:ff:ff:ff:ff:ff
inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0
inet6 fe80::20c:29ff:fe0f:8267/64 scope link
valid_lft forever preferred_lft forever
To Set other Configurations of Network Interface
Other than setting IP or Hardware address, the configurations that have to apply to an interface are,
- Transmit Queue length
- Promiscuous mode
- Disable or enable all multicast mode
- Maximum Transfer Unit
- Multicast flag
ifconfig and ip &ndash Other Network Configurations
a. Set MTU value to 2500.
ifconfig command
[root@linuxhelp ~]# ifconfig eth0 mtu 2500
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:99
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING NOARP PROMISC ALLMULTI MULTICAST MTU:2500 Metric:1
RX packets:784666 errors:0 dropped:0 overruns:0 frame:0
TX packets:263736 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:756924939 (721.8 MiB) TX bytes:18701605 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
ip command
[root@linuxhelp ~]# ip link set dev eth0 mtu 3000
[root@linuxhelp ~]# ip a
1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: < BROADCAST,MULTICAST,NOARP,ALLMULTI,PROMISC,UP,LOWER_UP> mtu 3000 qdisc pfifo_fast state UP qlen 2500
link/ether 00:0c:29:0f:82:99 brd ff:ff:ff:ff:ff:ff
inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0
inet6 fe80::20c:29ff:fe0f:8267/64 scope link
valid_lft forever preferred_lft forever
b. Enable or Disable multicast flag.
ifconfig command
[root@linuxhelp ~]# ifconfig eth0 multicast
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:99
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING NOARP PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
RX packets:795743 errors:0 dropped:0 overruns:0 frame:0
TX packets:263750 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:760749503 (725.5 MiB) TX bytes:18702616 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:146 errors:0 dropped:0 overruns:0 frame:0
TX packets:146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9890 (9.6 KiB) TX bytes:9890 (9.6 KiB)
ip command
[root@linuxhelp ~]# ip link set dev eth0 multicast on
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:99
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:3000 Metric:1
RX packets:429507 errors:0 dropped:0 overruns:0 frame:0
TX packets:263534 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:610781188 (582.4 MiB) TX bytes:18687410 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:144 errors:0 dropped:0 overruns:0 frame:0
TX packets:144 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9792 (9.5 KiB) TX bytes:9792 (9.5 KiB)
c. Setting the transmit queue length.
ifconfig command
[root@linuxhelp ~]# ifconfig eth0 txqueuelen 1500
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:99
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:3000 Metric:1
RX packets:429524 errors:0 dropped:0 overruns:0 frame:0
TX packets:263534 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1500
RX bytes:610782330 (582.4 MiB) TX bytes:18687410 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:144 errors:0 dropped:0 overruns:0 frame:0
TX packets:144 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9792 (9.5 KiB) TX bytes:9792 (9.5 KiB)
ip command
[root@linuxhelp ~]# ip link set dev eth0 txqueuelen 2500
[root@linuxhelp ~]# ip a
1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: < BROADCAST,MULTICAST,UP,LOWER_UP> mtu 3000 qdisc pfifo_fast state UP qlen 2500
link/ether 00:0c:29:0f:82:99 brd ff:ff:ff:ff:ff:ff
inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0
inet6 fe80::20c:29ff:fe0f:8267/64 scope link
valid_lft forever preferred_lft forever
d. Enabling or disabling promiscuous mode.
ifconfig command
[root@linuxhelp ~]# ifconfig eth0 promisc
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:99
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:3000 Metric:1
RX packets:431715 errors:0 dropped:0 overruns:0 frame:0
TX packets:263534 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:611730229 (583.3 MiB) TX bytes:18687410 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:144 errors:0 dropped:0 overruns:0 frame:0
TX packets:144 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9792 (9.5 KiB) TX bytes:9792 (9.5 KiB)
ip command
[root@linuxhelp ~]# ip link set dev eth0 promisc on [root@linuxhelp ~]# ip a 1: lo: < LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: < BROADCAST,MULTICAST,UP,LOWER_UP,PROMISC> mtu 3000 qdisc pfifo_fast state UP link/ether 00:0c:29:0f:82:99 brd ff:ff:ff:ff:ff:ff inet 192.168.7.123/24 brd 192.168.7.255 scope global eth0 inet6 fe80::20c:29ff:fe0f:8267/64 scope link valid_lft forever preferred_lft forever
e. Enable or disable all multicast mode.
ifconfig command
[root@linuxhelp ~]# ifconfig eth0 allmulti
[root@linuxhelp ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:0F:82:99
inet addr:192.168.7.123 Bcast:192.168.7.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe0f:8267/64 Scope:Link
UP BROADCAST RUNNING PROMISC ALLMULTI MULTICAST MTU:3000 Metric:1
RX packets:460881 errors:0 dropped:0 overruns:0 frame:0
TX packets:263534 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:2500
RX bytes:624959520 (596.0 MiB) TX bytes:18687410 (17.8 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:144 errors:0 dropped:0 overruns:0 frame:0
TX packets:144 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9792 (9.5 KiB) TX bytes:9792 (9.5 KiB)
ip command
[root@linuxhelp ~]# ip link set dev eth0 allmulti on
To Enable or disable the use of ARP protocol
To Enable/Disable ARP Protocol
ifconfig command
To disable, change arp with -arp. This command enables the protocol ARP to be used with interface eth0.
[root@linuxhelp ~]# ifconfig eth0 arp
ip command
For disabling replace on with off.
[root@linuxhelp ~]# ip link set dev eth0 arp on
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