You can do this, but you need to be careful about overloading the third, lower bandwidth, link. OSPF doesn't have a limit on the number of equal cost paths, but the routing table is limited to 8 equal cost paths, and some platforms limit you to 2 or 6 equal cost paths.
By manipulating the cost on all the 3 links, all links will have equal number of packets sent. OSPF wont balance the traffic like EIGRP does with Unequal cost load balancing, where the number of packets sent on two links will be in a ratio x:y where x and y are the bandwidths (metrics) of the links.
[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...