ADSL2 Line Utilization causes ping to fail
Posted on 2009-05-13
Hi, I've got an ADSL2 Line with a CISCO 877 configured.
I started pinging certain IP addresses every minute to see if there's a network issue as sometimes there will be drop outs.
Meaning, the pings will fail for a good minute or so.
I called up the provider explaining this and they tell me that the network is over-utilized. CISCO Web admin shows that the line is 100% utilized.
The provider says that the uplink is causing the problem and is peaking at 650K (theoretically there should be like 1MBps uplink and 22MBps downlink) and unless I do something over at my end on the LAN, there's nothing much they can do.
Network is running 2 different subnet, VLAN-ed at the CISCO level, having 10 odd clients each. Each VLAN has 1 microsoft SBS server. One LAN runs Exchange Server as well as a POSTFIX linus mail server, altogether about 10 internal email accounts. External people access the Postfix machine via POP3 and IMAP, total of 30 odd accounts.
Question I've got is
1. How can I throttle bandwidth without investing too much $
2. Is this sort of network behaviour weird? Network should not drop the ping, instead the latency should be higher.
any suggestions much appreciated.