Re: Whats so difficult about ISSU

In vendor-speak ISSU usually refers to 'minimal traffic impact' upgrade. Definition of minimal varies from vendor to vendor and from upgrade to upgrade, depending of which parts of the code need to be upgraded. In general, traffic loss during ISSU is an order of magnitude less than by reloading the

Re: This network is too good...

You have pretty much two approaches: -Special built hardware network emulators -Network emulator software running on generic PC Special built HW: If you need extreme accuracy, i.e., delay generation to micro/nanosecond accuracy, you need to go with special purpose boxes. Special built HW also usua

Re: Hardware capture platforms

Second that. Using hub to tap into a single link is also risky. I used to monitor single FE link with 100M hub. After link had moderate utilization >20%, collision led was lit all the time. I've had good experience with VSS Monitoring Ethernet Aggregator taps. Also Catalyst 2960 SPAN seems to wor