Here goes... We have a core router (3640) and a DSL aggregation router (7206) on either side of a Emerging Technologies Bandwidth Manager that bridges multiple ethernet segments. The problem is if there is any address on the ethernet network that is outside of the primary ip subnet assigned to the network then the bandwidth manager introduces a 70% reduction in throughput. I could remove the manager but it is critical to managing the DSL bandwidth. Cisco originally told us the ATM circuits terminated on the 7206 were routed connections. In fact they appear as bridged connections to the ethernet lan. When I assign an ip address from a dedicated subnet for the DSL customers that is not part of the lan subnet we have significant problems with throughput and latency. If we assign ip addresses from the lan subnet it works great. We can route to ip subnets outside the lan subnet if we use a local ip on the bridge side. This is causing us to reconfigure our network to accomodate this behaviour. In the reconfiguration we need to determine how the modem connections are handled. I know there is some provision for proxy arp in the system as well routing. I want to assure that my system is configured for routing and does not appear as having bridged connections. Latency issues are always a concern for ISP's. Mark Thornton San Marcos Internet, Inc. 512-393-5300 ----- Original Message ----- From: "Marshall Morgan" <marshall@netdoor.com> To: <usr-tc@lists.xmission.com> Sent: Wednesday, April 25, 2001 8:28 PM Subject: Re: (usr-tc) Bridged or routed connections?
Mark,
Could you please provide more details so we may better understand your issues.
Marshall Morgan
Internet Doorway, Inc (aka NETDOOR) http://www.netdoor.com
601.969.1434 x28 | 800.952.1570 x28 | 601.969.3629 x28 | Fax 601.969.3838 ----- Original Message ----- From: "Mark Thornton" <mark@corridor.net> To: <usr-tc@lists.xmission.com> Sent: Wednesday, April 25, 2001 12:16 PM Subject: (usr-tc) Bridged or routed connections?
I have run into a problem in my network that appears to be caused by my DSL router having the connections appear as bridged instead of routed. It is causing a throughput bottleneck of 50 to 70%. This is causing me to analyze my entire network configuration.
Do the connections to a TCH on the HiperArc appear as routed connections, or as bridged connections?
Mark Thornton San Marcos Internet, Inc. 512-393-5300
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