Switching

Hi, We have a problem with the N7K not able to detect the sfp we inserted to certain ports on the module. For instance, on port e1/41 to e1/44 or e2/41 to e2/43 --> it is not working. The log did not have any messages that the sfp has been inserted t...

We have a LAN based on 6509 core routers and the new one with 6807 core routers. The cross-segments traffic speed between the two cores is much slower, about 50% slower, than the traffic within the cores. The AutoQos and class-map commands seem to be...

Does anyone know what the technical difference is between these two SFP+ modules? Their function seems to be identical.,The only difference that I can easily find, is that the SFP-10G-SR= costs about $220 more than the SFP-10-SR-S= module:http://www....

Hi , This is our scenario : Poly com Video equipment ----------> firewall -------------> Cisco router ------------> ISP . Poly com video equipment ( 10.10.10.10 )  is static nat with cisco router 1941  (110.110.X.X ) . In firewall not configured  ...

Hello, We've set up netflow on our core switch and it works, we are capturing all inter-vlan traffic. We are also trying to get traffic that flows inside a vlan on an edge switch (that traffic does not reach the core switch). We are running 3850 wi...

Hello, I purchased a couple old 2600 routers to learn more at home.  I wanted to update the firmware and all went well on the first router.  On the second the router hangs on erash flash:  It will start showing e's and when it get's to five e's it ju...

Hello, this is my first post and I hope I have it in the correct location.. I am attempting to solve who I am denying in my Extended MAC access list. permit host 0019.0f25.9dcf any    permit host 000b.aba3.af14 any    permit host 000b.aba1.ca08 any ...

Hello, Hoping someone could answer the question. Following bug states that "no negotiate auto" was provided as a work around for Nexus 3000. But I know from personal experience that "no negotiate auto" on Nexus 3000's QSFP-40G-CR4 would cause "link f...

Hello, we are your partner and have the following request. We use WS-C2960X-48TS-LL and WS-C3850-48T-E Catalyst Switch. My question is whether these models SFP are compatible with these models switches: 1. APS31123CDL20 - 1.25G 1310nm 20KM 2. ATOP ...

I'm in the process of configuring QoS on Nexus 9k.  I've finally started to wrap my head around the differences in the 9k compared to the Catalyst, and am making progress... but have run into one issue: The 2k FEX only supports COS to queue mapping....

Hello, I have a SG-300 10PP switch ( PoE+ switch ) and I would like to operate a certain device on standard 802.3af ( PoE ) power. Even if i configure the port to supply a maximum on 15.4W the device still boots up on PoE+ mode. Is there something I ...

hi folks . right now i have ASR 1002 IT HAS 2 modules one with 4 ports and one with 8 ports  but i need to have like 3-4 ports of 10G i just need advices which parts are close to my chasis and will be supporting my routing to handle 10G for each po...