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тАО05-27-2010 01:51 AM
тАО05-27-2010 01:51 AM
network bandwidth
Hi,
Is there any command to find the total bandwidth of a HP-UX server?My server is connected to 1 GBPS switch.But we are not getting the expected bandwidth.How can i check if it is connected to 1GBPS using any command?
Is there any command to find the total bandwidth of a HP-UX server?My server is connected to 1 GBPS switch.But we are not getting the expected bandwidth.How can i check if it is connected to 1GBPS using any command?
2 REPLIES 2
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тАО05-27-2010 05:01 AM
тАО05-27-2010 05:01 AM
Re: network bandwidth
You can use lanadmin or nwmgr, it depends on your OS version.
# nwmgr -g -v -c lan0
lan0:
Interface State =UP
MAC Address =
Subsystem = igelan
Interface Type = 1000Base-T
Hardware Path = 0/1/2/0
NMID = 1
Feature Capabilities = Physical Interface
IPV4 Recv CKO
IPV4 Send CKO
VLAN Tag Offload
64Bit MIB Support
IPV4 TCP Segmentation Offload
UDP Multifrag CKO
Feature Settings = Physical Interface
VLAN Tag Offload
64Bit MIB Support
MTU = 1500
Speed = 1 Gbps Full Duplex (Autonegotiation : On)
Hope this helps!
Regards
Torsten.
__________________________________________________
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those who understand binary, and those who don't.
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# nwmgr -g -v -c lan0
lan0:
Interface State =UP
MAC Address =
Subsystem = igelan
Interface Type = 1000Base-T
Hardware Path = 0/1/2/0
NMID = 1
Feature Capabilities = Physical Interface
IPV4 Recv CKO
IPV4 Send CKO
VLAN Tag Offload
64Bit MIB Support
IPV4 TCP Segmentation Offload
UDP Multifrag CKO
Feature Settings = Physical Interface
VLAN Tag Offload
64Bit MIB Support
MTU = 1500
Speed = 1 Gbps Full Duplex (Autonegotiation : On)
Hope this helps!
Regards
Torsten.
__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.
__________________________________________________
No support by private messages. Please ask the forum!
If you feel this was helpful please click the KUDOS! thumb below!
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тАО05-27-2010 10:44 AM
тАО05-27-2010 10:44 AM
Re: network bandwidth
Since you did not provide a version of HP-UX, the answer is nwmgr or lanadmin. Here is the lanadmin command:
lanadmin -x 0
(0 means lan0) Make sure that Speed=1000 Full-duplex and auto-negotiation is on. If this is not the current setting, there are several steps needed to fix the issue.
HOWEVER, this does not show bandwidth, that is, the performance of the card on the current network. In general terms, you can take the wire speed (ie, 1 Gbit/sec) and divide it by 10 to obtain bytes/sec (including a fudge factor for overhead bytes per packet), and then take 80% of that value for maximum performance. So your 1 Gbit/sec link can perform at about 80 Mbytes/sec.
Note that testing a link using software-intensive protocols like NFS or rcp is unreliable as a bandwidth metric. ftp is good as it maximizes throughput in a number of different ways, but the best bandwidth checker is netperf:
http://www.netperf.org/netperf/
Bill Hassell, sysadmin
lanadmin -x 0
(0 means lan0) Make sure that Speed=1000 Full-duplex and auto-negotiation is on. If this is not the current setting, there are several steps needed to fix the issue.
HOWEVER, this does not show bandwidth, that is, the performance of the card on the current network. In general terms, you can take the wire speed (ie, 1 Gbit/sec) and divide it by 10 to obtain bytes/sec (including a fudge factor for overhead bytes per packet), and then take 80% of that value for maximum performance. So your 1 Gbit/sec link can perform at about 80 Mbytes/sec.
Note that testing a link using software-intensive protocols like NFS or rcp is unreliable as a bandwidth metric. ftp is good as it maximizes throughput in a number of different ways, but the best bandwidth checker is netperf:
http://www.netperf.org/netperf/
Bill Hassell, sysadmin
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