sh interface VS sh ip interface

datchcha

What are the differences between sh interface and sh ip interface, and when would you use them?

mobri09

Show interfaces gives you a detail overview of the specific interface your requesting.
Show ip interface just gives you a quick summary of the layer 3 characteristics of the interface.

datchcha

mobri09 wrote:

Show interfaces gives you a detail overview of the specific interface your requesting.
Show ip interface just gives you a quick summary of the layer 3 characteristics of the interface.

Ok, great thanks.

Netstudent

"show ip int brief" will give you a quick summary.
"show ip int" will actually give you a rather legthy output.

Router# show ip interface g 0/3
GigabitEthernet0/3 is up, line protocol is up
Internet address is 10.1.1.1/16
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Local Proxy ARP is disabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is disabled
IP Flow switching is disabled
IP CEF switching is enabled
IP Feature Fast switching turbo vector
IP VPN Flow CEF switching turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast, CEF
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Policy routing is enabled, using route map PBR
Network address translation is disabled
BGP Policy Mapping is disabled
IP Multi-Processor Forwarding is enabled <======== MPF information
IP Input features, "PBR",
are not supported by MPF and are IGNORED
IP Output features, "NetFlow",
are not supported by MPF and are IGNORED



Router# show ip interface brief
Interface IP-Address OK? Method Status Protocol
Ethernet0 10.108.00.5 YES NVRAM up up
Ethernet1 unassigned YES unset administratively down down
Loopback0 10.108.200.5 YES NVRAM up up
Serial0 10.108.100.5 YES NVRAM up up
Serial1 10.108.40.5 YES NVRAM up up
Serial2 10.108.100.5 YES manual up up
Serial3 unassigned YES unset administratively down down


When to use these commands can vary greatly. the show int and and show ip int tell you different things. Knowing what you are looking for is key to knowing which command to use.

datchcha

Netstudent wrote:

"show ip int brief" will give you a quick summary.
"show ip int" will actually give you a rather legthy output.

Netstudent

they key there would be whether the question was referring to a detailed IP related parameter. If it was asking for more general info like encapsulation, bandwidth, keepalives, then it was probably referring to show int. If it was wanting to know how to find an ACL then it would be show ip int. Show commands to find ACL's and to see what interfaces they are applied to are very common practice questions.

Iristheangel

@OP, Do you have a test lab or GNS3/Packet Tracer installed? You should think about getting one of those installed so you can sample the differences between all the commands

LvSrikanthLakshman

it more looks like show ip interfaces gives more information related to layer 3, like how ip is obtained, acl info, MTU size, and lots of IP based configs, split horizon etc.

show interfaces details more on layer 2 level : like mac address, duplex, connector type, etc