We need to swap Fabric Module 5 with Fabric module 4 in order to determine whether or not the issue is with the Fabric Module or slot (requested by TAC). I'm wondering is it safe doing so during normal operation ? (Nexus will operate with 3 Fabric Modules for a short period of time during Card replacement. What is the minimum number of Fabric Modules that have to be installed in the chassis at any given time?) Here is Chassis info: Nexus 7010 NX-OS version 6.2(2a) with 2 x F2E modules (  N7K-F248XP-25E ) and dual Sup (N7K-SUP2E). Currently 5 x Fabric Modules 2 have been installed. Any response is appreciated in advance! Cheers, Ehsan ... View more

Hello experts, I know this might be an easy one for some... Is there a way to have your network device (Switch or Router) to try to first authenticate locally (if the username was found on the local database of the device) and then if not found, device reach for TACACS authentication? We're rolling out TACACS authentication but don't want to disrupt existing 'local' authentication on our devices. Thanks! Any help is highly apreciated! Cheers, Ehsan ... View more

Hi all, I was wondering can I have vPC peer-link formed in the following configuration in Nexus 7000, NX-OS version 6.2(10):   F2e----------------F2e F3-----------------F3   This is due to migration from F2e modules (where currently vPC peer-link is configured) to F3 modules on both ends.   Thanks,    ... View more

Hi there, Are there any SFP modules for Cisco Catalyst 2960-S (or 2960-X) switches that is compatible with SC connectors fiber (Multi Mode 1Gbps uplink connectivity). We are currently using optical convertors to convert 100 BaseFX SC Connector Fiber to 100 Base-TX in order to connect it via Cat5 cable to the switch. We are planning to upgrade our switches ( Preferably to 2960-S or 2960-X series) so that we can get rid of these fiber convertors and plug in the SC connector fiber directly to the switch using supported SFP modules. We only need 1Gbps uplink to the core switch. Any advice would be highly appreciated. Thanks, ... View more

To All Pro's Out There, I have 2 x ASA 5520 in Active/Standby state (Routed, Single context) running 8.2(3) image. They are working great and everybody is happy. Now it's time for us to upgrade to the latest and greatest version: 9.1 and as you know there are some architectural changes Cisco made to NAT statements and Access Lists. As one can tell, we have a monster environment in terms of NAT statements and access list that are currently configured on the appliances. In order to make the upgrade process "less" painful, I was able to find a loaner ASA 5520 device so I can practice the upgrade process offline and if needed, I use it in production (in conjunction with existing Primary and Secondary devices) should it be helpful. I currently don't have any plans on how to move forward with these 3 devices and put together an smooth upgrade. I am asking advice from experts that perhaps have done this in the past and know some Do's and Don’ts and can provide me some options toward getting best result: Minimum downtime and Smooth upgrade. I appreciate all the help in advance. ... View more

Hi, My organization is going to run 10 GbE fiber optic across multiple campuses to provide faster connection from site to site (5 sites) and to a centralized datacenter located at one of the buildings. We've come up with a network design based on Cisco Nexus 7000 at the core (doing layer 3 only) and 2960-Ss at the access layer. From design perspective this plan works perfectly fine and accommodate company's any future growth and scalability but due to the fact that cost is always a huge factor, it turned out going all the way Cisco across the board is going to be a VERY expensive solution! On the other hand, HP has proposed a pricing based on their own line of products (A 12500 series at the core and some of their layer 2 devices at the access layer) and the price turned out to be significantly lower! I have been pushing hard to convince the company to go all the way Cisco because of many reasons which I value but have been unable yet to find any compelling reasons why HP is not good and Cisco can really do a better job here. Because the reality is they both will WORK eventually! However the differences are when we run into serious issues i.e outage or future planning and etc I was wondering have you guys ever worked with HP gears in a high throughput network environment (i.e. site-to-site 10G connection) as ours and have ever run into any major problems which would give us enough good reasons not to go with HP or vice versa? what’s your take on this story? Is it really safe to pick HP over Cisco technically and also from investment protection in a long run? Thanks, Ehsan ... View more

Hi, Probably not a new question but are you guys aware of any network discovery tool/software (for Cisco devices) that I can use to discover cisco equipment sitting in my network. I’ve a fairly large LAN with many switches/routers in many subnets and unfortunately there is no documentation either to figure out which is where and how the topology looks like at least at very high level. Any help would be highly appreciated Ehsan ... View more