I am trying to do a bit of planning and would like some clarification.
Will the overall network speed be degraded when the default gateway port speed is only 100Mbps?
For instance. Our network has a MPLS router that has a port speed of 100Mbps set as the default gateway for that office. That location does also have a 1Gbps and 10Gbps fiber connection connecting other offices together.
Can someone point me in the correct direction of a diagram of how packet traffic flows across/through the default gateway and the network? Does an initial packet hit the default gateway to get the route and then all following packets understand the route the first packet took after the default gateway?
9/30/2014 The picture below is an overview of the network. The SBN network in the upper right hand corner is all one VLAN. That network is all flat and nothing special. All end users and servers are on the same VLAN and subnet. That location as well as all of the other locations get their internet piped through the the Metronet device. (This Metronet is a city wide fiber ring shared among several businesses in the area. We do not manage the routers that deal with that network) All of our servers are currently in the SBN office and will soon be moving over to our new location at the MC office in the upper left corner of the diagram.
The GAP location is a shared datacenter space we have that is setup in bridged mode with our SBN location. The default gateway for the SBN and GAP locations is the 100Mbps MPLS router labeled GAP MPLS. There is a 1Gbps fiber link between the SBN and GAP locations.
We use the MPLS devices for phone and some specialized data. The ASA and Comcast devices are setup to connect the offices for the rest of their data needs to the SBN/GAP office.
We are looking into transitioning the GAP SW25 switch to a better layer 3 switch and do some of our own routing on that device instead of the MPLS router that we do not manage.