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03-29-2013 01:55 AM - edited 03-29-2013 02:35 AM
03-29-2013 01:55 AM - edited 03-29-2013 02:35 AM
A5500-48G Performance issues
I recently purchased HP A5500-48G Switch (JD375A). I did basic configuration - 2 VLANs, 1 L3 port toward router, 1 static route to router, no ACLs and QoS. During tests I noticed that when I am copying big files across local network there are some performance problems. My connection to the Internet slows down almost to 0. CPU usage is between 10-15%.
Does anyone have similar problems? Maybe someone have some suggestion what should I do to resolved that problem?
Thanks in advance.
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04-28-2013 05:16 PM
04-28-2013 05:16 PM
Re: A5500-48G Performance issues
Without seeing your configuration it's hard to make any specific judgements, but in copying big files across the LAN, it's very unlikely that a 5500 switch will introduce any bottlenecks - all forwarding (at either L2 or L3) is done in hardware. I would suggest setting up SNMP monitoring of your switch and Internet router and looking at the statistics for each port.
Paul
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04-30-2013 01:51 AM
04-30-2013 01:51 AM
Re: A5500-48G Performance issues
Hi,
file copy is typically not a good reference for network testing, since normally the file server is the bottleneck.
Try using iperf on the client and the server:
# Server, statistics update interval 1 second:
iperf -s -i 1
# Client, statistics update interval 1 second, x.x.x.x is IP address of the server
iperf -c x.x.x.x -i 1
This should show better throughput, altough most clients cannot really generate 1 Gbps, so if you see 500-700Mbps, I would consider it normal.
Use recent pcs/workstations/servers if you try to test real Gigabit speeds,
Best regards,Peter
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