AIX study--aix NIC Configuration management (Ent0, En0, Et0)

AIX study--aix NIC Configuration management (Ent0, En0, et0)
1. Check the AIX system card information:
[[email protected]/] #lsdev |grep et

En0        Available 1l-08 standard         Ethernet network Interfaceen1 Available 14-08 standard         Ethernet Network Interfaceen2        Defined   1d-08 standard         Ethernet Network Interfaceent0 Available 1l-08         10/100 Mbps Ethernet PCI Adapter II (1410FF01) ent1       Available 14-08         10/100 Mbps Ethernet PCI Adapter II (1410ff01) ent2       A vailable 1d-08         10/100 Mbps Ethernet PCI Adapter II (1410ff01) et0        Defined   1l-08         IEEE 802.3 Ethernet Network Interfaceet1        Defined   14-08         IEEE 802.3 Ethernet Network Interfaceet2   Defined 1d-08         IEEE 802.3 Ethernet Network Interface

From This we can see:

Ent1 is the device name of the physical NIC, En0 or ET0 is the network interface name (logically). Enx (x is a number that represents the first few NICs) is a standard Ethernet interface. The Et0 is an IEEE 802.3 Ethernet interface.

En0 is Ethernet II protocal interface

Et0 is 802.3 protocal interface

ent0 is hardware device INTERFACE

2. Check the NIC properties:

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[[email protected]/] #lsattr-el en0alias4 IPv4 Alias including Subnet Mask TRUEALIAS6 IPv6 Alias including Prefix Length truearp on Address Resolution Protoc                   OL (ARP) trueauthority Authorized Users truebroadcast Broadcast Address TRUEMTU Maximum IP Packet Size for this Device T Ruenetaddr 192.168.8.211 internet Address Truenetaddr6 IPv6 Internet Ad                   Dress Truenetmask 255.255.255.0 Subnet Mask Trueprefixlen Prefix Length for IPv6 Internet Address trueremmtu 576 Maximum IP Packet Size for REMOTE N Etworks Truerfc1323 enable/disable TCP RFC 1323 Window Scaling truesecurity None Securit                 Y level            Truestate up Interface Status Truetcp_mssdflt Set TCP Maximum Segment Size truetcp_nodelay enable/disable tcp_nodelay Option truetcp _recvspace set socket buffer Space for receiving truetcp_sendspace set socket buffer Spac E for sending True

[[email protected]/] #lsattr-el et0alias4 IPv4 Alias including Subnet Mask TRUEALIAS6 IPv6 Alias including Prefix Length truearp on Address Resolution Protocol (ARP) Trueautho                          Rity Authorized Users truebroadcast broadcast Address                           TRUEMTU 1492 Maximum IP Packet Size for this Device truenetaddr Internet Address                                TRUENETADDR6 IPv6 Internet Address truenetmask Subnet Mask Trueprefixlen Prefix Length for IPv6 Internet Address trueremmtu 576 Maximum IP P Acket Size for REMOTE Networks Truerfc1323 enable/disable TCP RFC 1323 Window Scaling truesecurity None Se         Curity level truestate to current Interface Status Truetcp_mssdflt Set TCP MaximumSegment Size truetcp_nodelay enable/disable tcp_nodelay Option truetcp_recvspace Set so Cket buffer space for receiving truetcp_sendspace Set Socket buffer space for sending True

[[email protected]/] #lsattr-el ent0alt_addr 0x000000000000 Alternate Ethernet Address T Ruebusintr Interrupt level Falsebusmem 0xc8030000 Bu s memory address falsechksum_offload Yes Enable hardware transmit and receive Che               Cksum trueintr_priority 3 Interrupt Priority Falseipsec_offload No                 IPsec Offload truelarge_send Yes Enable TCP Large send Offload               Truemedia_speed auto_negotiation Media Speed Truepoll_link No Enable link Polling truepoll_link_timer interval for link Pollin G Truerom_mem 0xc8000000 ROM memory address Falserx_hog 1 RX DESCRIptors per RX Interrupt truerxbuf_pool_sz 1024x768 Receive Buffer pool Size T RUERXDESC_QUE_SZ RX Descriptor Queue Size Trueslih_hog Int                              Errupt Events per Interrupt truetx_preload 1520 TX preload Value              TRUETX_QUE_SZ 8192 software TX Queue Size TRUETXDESC_QUE_SZ 512             TX descriptor Queue Size trueuse_alt_addr no Enable Alternate Ethernet Address True[[email protected]/]#

3. Check the network card configuration:

[[email protected]/] #lscfg-VPL En0[[email protected]/] #lscfg-VPL Et0[[email protected]/] #lscfg-VPL ent0  ent0
   
    u0.1-p1/e2  10/100 Mbps Ethernet PCI Adapter II (1410FF01)    10/100 Mbps Ethernet PCI Adapter II:        Network addres S ..... ..... 000255cf1406        ROM level. ( alterable) .... SCU015        Product Specific. ( Z0) .... A5204205        Hardware Location Code ... U0.1-p1/e2  PLATFORM specific  Name:  Ethernet    Node:  [email protected]    Device Type:  Network    Physical Location:u0.1-p1/e2
   

Physical Locationcan infer if the NIC is plugged into the PCI interface

[[email protected]/] #lsslot-C PCI
# Slot Description Device (s)
U0.1-p2-i1 pci-x capable, + bit, 133MHz slot Empty
U0.1-p2-i2 pci-x capable, + bit, 133MHz slot Empty
U0.1-p2-i3 pci-x capable, 133MHz slot FCS0
U0.1-p2-i4 pci-x capable, + bit, 133MHz slot Empty
U0.1-p2-i5 pci-x capable, 133MHz slot Ent2
U0.1-p2-i6 pci-x capable, + bit, 133MHz slot Empty

[[email protected]/] #lscfg-VPL Ent2
Ent2 u0.1-p2-i5/e1 10/100 Mbps Ethernet PCI Adapter II (1410ff01)
10/100 Mbps Ethernet PCI Adapter II:
Part number ........ ..... 09p5023
FRU number ....... ....... 09p5023
EC level ........ ....... h10971a
Manufacture ID ..... ..... YL1021
The Network Address ...... 000255af8dad
ROM level. (alterable) .... SCU004
Product Specific. (Z0) .... A5204205
Hardware Location Code ... U0.1-p2-i5/e1

---can see. Ent2 is plugged into the PCI slot
physical devices and logical devices

1. Physical equipment refers to the actual hardware which is connected with the computer system in some way. such as monitors, terminals, tape drives and so on.

AIX study--aix NIC Configuration management (Ent0, En0, Et0)

2, the logical device is the user or application access to the physical device interface. A user or application visits a physical device through a logical device.

3, in very many cases, a physical device will be corresponding to multiple logical devices

To View physical devices:[[email protected"/] #lsdev-CC adapter
ent0    available 1l-08    10/100 Mbps Ethernet PCI Adapter II (1410ff01)
ent1    available 14-08    10/100 Mbps Ethernet PCI Adapter II (1410ff01)
ent2    available 1d-08    10/100 Mbps Ethernet PCI Adapter II (1 410FF01)
fcs0    available 1n-08    FC Adapter
View logical devices: [[email protected]/] #lsdev-cc if
en0 Available 1l-08 standard Ethernet Network Interface
En1 Available 14-08 standard Ethernet network Interface
en2 Defined   1d-08 standard Ethernet network INTERFAC E
et0 Defined   1l-08 IEEE 802.3 Ethernet Network Interface
et1 Defined   14-08 IEEE 802.3 Ethernet networ K Interface
Et2 Defined   1d-08 IEEE 802.3 Ethernet Network Interface