Switching

Hi Everyone, I want the LAN design advises from you, I want to design the LAN network for college campus, Where College having multiple buildings (5-6 buldings) with college staffs ,students ,wifi access points, guest wifi network,servers, surveillan...

there is any EFM module for ISR4000 ?

Hi all,   I have OSPF and EIGRP being mutually redistributed on two routers. Because OSPF distance is less than the redistributed EIGRP route, the OSPF route is loaded into the RIB.    However, when I change the OSPF distance to 180 or lower the EIGR...

Let's say PC A uses CRC 16 and PC B uses CRC 32. If PC B receives the frame from PC A, what would happen? Also, in reverse case, what would happen? 

This is a complete newby question but currently we have a virtual WLC located at our main offices controlling 30 APs here as well as controlling APs at two other offsite locations across an MPLS site to site. currently running no vlans but we would l...

Hello,   What is the practical difference between these two:   1) connection with single optical fiber using bidirectional SFP vs 2) connection with duplex optical fiber using duplex SFP ?   Is it the simplex bidirectional bidirectional SFPs is more ...

i find cpu ultilization is high 97% in access switch at Fed process then find its queue called broadcast  then find the port connected with distribution layer switch N7K then, what should i do ?   TX 19958467910 unicast packets 2086888451 multicast p...

Hello,   Just a cisco novice that have a few questions about the cisco 891w router, and hope that I can get some expert answers.   I've just purchased a cisco 891w and use it as my home router/gateway via an external hdsl modem. I've managed to get t...

                   Hello I have been trying to get this working all day.  I am using a 2800 ISR router with voice capabilities.  I am trying to use Voip.ms for over a sip trunk to make calls but i get a voice message that says "this number has not ye...

Hi guy I would like to know      Which switch stack is selection master from ? if it by default configure and it the same priority. It selection from .. such as   uptime , mac address  whatever...     And i have any question about stacking I have 2 s...

Hello friends,   I am trying to establish a 10 GB fiber connection between two Cisco switches.   Switch 1 - Cisco WS-C3650-48PQ has 4 x 10 Gigabit Ethernet with SFP+ uplinks Switch 2 - Cisco WS-C2960X-48FPD-L has 2 x 10 Gigibit Ethernet with SFP+ upl...

Hey all. Would like to share an issue and see if anyone else has had this issue and could shed some light on a possible fix.   Got a WS-C2960X-48FPD-L switch that is failing to load iOS c2960x-universalk9-mz.152-5b.E.bin   We have this iOS image runn...

Hi all! I have created seral port extender over IP based on Cisco 28xx routers and HWIC-1T + CAB-SS-232FC/MT cables pair. Here is a picture of my network setup BSTUN protocol is used in asynchronous mode (yes, I need async). I took this Cisco's sampl...