1. Joint AGLT2-MWT2 Networking meeting
IU MWT2 Networking
Matt Hoffman
Indiana University
Joint AGLT2-MWT2 Networking meeting

2. Current Layout Dell 6248 Switch Stack
7 Switches stacked in a ring with 40Gb links between them
2x10Gb uplink to IU Research Network
10Gb Links to storage farms and service nodes
1GE links to compute nodes
See MWT2-IU-Network-v5 document

4. What’s New Checksum issue resolved, back to 100Gb IU Backbone
8-Port Brocade module + 8x10Gb optics installed
Dell Force and 8x10Gb optics installed
IU Research Network Brocade <-> MWT2 Dell switch spans more than one module to minimize link loss should module failure occur.
Aggregate link is up, passing VLANs – not currently in production
Troubleshooting is ongoing of one link failure (possible fiber issue)

6. Near Future Goals
Connecting PerfSonar hosts to Dell 4810 to begin performance testing
Install additional Dell 4810 using Virtual Link Trunking (VLT).
Migrate service hosts and storage farms to new layout
Spread current 8x10Gb links across both 4810s, further distributing loads and impact in unlikely hardware failure