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Hi Managers,
I connected to machines using Gigabit Ethernet Card / Cross cable
connection.
Once connected, I am able to ping the other machine.
-bash-2.05b# ping 172.16.1.2
PING 172.16.1.2 (172.16.1.2) from 172.16.1.1 : 56(84) bytes of data.
64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=0.210 ms
64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=0.303 ms
64 bytes from 172.16.1.2: icmp_seq=3 ttl=64 time=0.428 ms
64 bytes from 172.16.1.2: icmp_seq=4 ttl=64 time=0.166 ms
64 bytes from 172.16.1.2: icmp_seq=5 ttl=64 time=0.157 ms
Now I want to enable jumbo frames ( mtu 9000) so I am giving the
command
ifconfig eth0 mtu 9000 up ----------> in both the interfaces.
Once I enable the Jumbo frames in both the interfaces, the machines
fails to communicate.
Could someone explain me
- whether the above ping time is correct ?
- whether my approach to connecting the machines are ok.
- for file transfer, what is the maximum speed.
- I am using cat5e cross cable.
- ethtool says both the interfaces are up with 1000Mb/s Full Duplex
- One is onboard Gigabit ethernet card and the other one is Intel Pro
1000 MT (ethernet card for server).
- Pro MT1000 card is connected to PCI slot.
Machine 1 ( Linux kernel 2.4.18-14smp )
========
eth0 Link encap:Ethernet HWaddr 00:0E:0C:3D:DB:6F
inet addr:172.16.1.1 Bcast:172.16.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6441900 errors:0 dropped:0 overruns:0 frame:0
TX packets:11581619 errors:0 dropped:0 overruns:0 carrier:0
collisions:13880 txqueuelen:100
RX bytes:2737442658 (2610.6 Mb) TX bytes:976543988 (931.3 Mb)
Interrupt:16 Base address:0xec00 Memory:defa0000-defc0000
-bash-2.05b# ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: umbg
Wake-on: g
Link detected: yes
Machine 2 (Linux kernel 2.4.18-14 #1)
========
[root@pc17 root]# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:04:23:A5:C7:2C
inet addr:172.16.1.2 Bcast:172.16.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11705615 errors:0 dropped:0 overruns:0 frame:0
TX packets:6500658 errors:0 dropped:0 overruns:0 carrier:0
collisions:13880 txqueuelen:100
RX bytes:1123046657 (1071.0 Mb) TX bytes:2753093352 (2625.5 Mb)
Interrupt:11 Base address:0xdc00 Memory:ff8e0000-ff900000
[root@pc17 root]# ethtool eth1
Settings for eth1:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: umbg
Wake-on: d
Link detected: yes
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