This comes from a stack of notes i compiled when faced with issues on an infiniband deployment that needed troubleshooting. 1) InfiniBand Hardware Checks
Author: Hasan Mansur
Hasan Mansur
---------------------
bis vincit qui se vincit in victoria.
Cisco and Force10 – STP Spanning Tree Interoperability
. Cisco Implements a proprietary flavor of spanning tree protocol, which is Per-VLAN in nature. This gives rise to certain considerations in a multi-vendor environment. Any third
Powerconnect SFP/Fiber connectivity – Options, Requirements and Troubleshooting
Basic requirements for fiber connections on PowerConnect switches: MMF optical cables, LC connectors, and SFP transceivers. 1) Optical Cables : Single Mode Vs Multi Mode Single Mode
Latency, Packet loss Troubleshooting (PowerConnect, Others)
. First, know your network. know the topology. if you have a network in place where by design, the majority of the variables are deterministic
Powerconnect Switches: Oversized Packet Counter, bcmRX task
. In a blade chassis implementation some time ago, some concerns were raised on the value of packet counters, and an inquiry on the bcmRX
Setting an Uplink VCP on a Standalone Switch – Juniper EX4200
You can set an uplink VCP on a standalone switch. You must set an uplink port on the standalone switch as a VCP prior to
Juniper Ex4200 Physical Interconnects
. EX4200 switches are available in models with 24 or 48 ports and with either all, or only 8 ports equipped for PoE. All EX4200
Juniper EX 4500 – Virtual Chassis & Interconnect
EX4500 switches ship with either the intraconnect module or the Virtual Chassis module preinstalled. Both modules are installed horizontally on the rear of chassis.
Powerconnect – Stacked Vs. Standalone Configuration
. A fairly common design choice to be faced with during deployments, is whether to use Stacking, Standalone, or vPC/VLT (a dual control plane implementation
Inter VLAN routing Troubleshooting
. The commands below are shown for a Juniper EX series model, but the troubleshooting is relevant for any platform. These are the requirements for
PowerConnect Switchport modes
. This post gives a comparison between the different port modes available on the Dell PowerConnect switches. the trunk and access modes are familiar to
Switch fabric setup for iSCSI
. This post summarizes various elements which, in my experience, serve to optimize the iSCSI switch fabric. While it talks about Powerconnect switches, the elements
Hello world!
On a personal level, the purpose of this blog is simple. To enable me to look back in 20 years time, and recall with fondness
Hasan Mansur 