if you have also a LAN switch you can connect sites to the LAN switch and you can use one GE port with subinterfaces: you just need one vlan for each remote site on L2 lan switch where you put the port where the remote site link is connected and a L2 trunk between the router and the layer2 switch.
if you haven't the external switch you can think of getting one or to get an etherswitch module to install on the router.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...