We are looking to deploy two Nexus 7009 cores at our two datacenters. They are approximately 2 miles apart. We are hoping to have 10G Dark Fiber between the buildings and therefore dedicate a pair for FCOE between the cores using 10G Long Range SFP's. I read that the Nexus 5000 series had a limit of ~3 km for FCOE. Does the same hold true for the 7000 series? I thought I read somehwere that the buffers were larger on the 7000 series and therefore would be able to do ~30 km.
Would love to hear feedback of people doing FCOE between datacenters. Thanks.
I referenced those SFP's, but those are just long range and extended range single mode fiber transrceviers. It appears both the 5000 and 7000 nexus switches support 10G transceivers. However, I believe FCOE has different maximum distances. The link below has FAQ for FCOE. In there, it says the maximum distance for Nexus 55xx to 55xx is only 3km. However, the 7000 series is not listed.
Yes, FCoE between Data Centers is possible. VE Ports allow you to build multi-hop FCoE fabrics by interconnecting multiple FCF, VE port functions as a Fibre Channel E-port running on top of a lossless Ethernet fabric. The maximum distance between two Cisco Nexus 5000 Series switches is 3000m for FCoE (lossless Ethernet) traffic with NX-OS 5.0(2)N1.1. It can be enabled using the pause no-drop buffer-size buffer-size pause-thresholdxoff-size resume-threshold xon-size command in QOS configuration. Here are the maximum distances:
Nexus 55xx to Nexus 55xx - 3km
Nexus 50x0 to Nexus 50x0 - 3km
Nexus 50x0 to Nexus 55xx - 3km
Nexus 55xx to Nexus 2232 - 300m
Nexus 50x0 to Nexus 2232 - 300m
I found a few more articles that touch on FCOE distances, but all of them revolve around the Nexus 5000 series.
We have deployed the 7K's at our two datacenters and have FCOE running without an issue. We are running 10G-ER transceviers with a distance of 13km. We are seeing no issues. Maybe this will help someone in the future.
[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...