Switching

We run 3850 switch stack to support our users, we run MAB authentication on the switch to authorize devices, they run IOS version 16.3.6 We see some scenarios where people connect a network dongle to the switch but cannot gain access to the network. ...

I have a 2911 with a EHWIC-VA-DSL & EHWIC-D-8ESG.I had a look at configuration examples for the -8ESG and it looked pretty fierce to someone who doesn't speak IOS like a native. Is there a simple configuration that will let it work as a simple 8-port...

Hi community,   Is there a way to deal with Multicast PTPv2 traffic, as it doesn't use IGMP I believe I cannot use IGMP snooping. Would it be the same for NX-OS and IOS platforms?

i have configured H3C S7506E core Switch port channel as below and cisco switch but the link down down. interface Bridge-Aggregation1 port link-type trunk port trunk permit vlan all port trunk pvid vlan 10 link-aggregation mode dynamic dhcp-snooping ...

Hi guys, I've just set up a new switch stack of 3 using Cisco 9300s. Can someone please inform me how to actually prioritise the master and member switches?   I've tried several things and it keeps electing switch 3 as the 'Active' switch, rather tha...

Hi there, Please if the following issue has been answered before point me in the direction of its where abouts, I am new to this forum. I have recently inherited management of a fairly simple network, 1 x Core router, 1 x Core switch and from them ...

Hello ,   i have a question for DNS issue. Scenario is : 20 hosts will be moved from a site 1 with ISP1 to the site 2 with ISP2, for some reason we cannot change anything on this 20 hosts. ON site 2 router  i will nat the running public  ip addresses...

Hello DearsAccept my apologyI hope this picture is more illustrative What config should I use on the device to automatically use the link2 in case of link1 failure?        

Anyone know what this error is? Or Which VTT its referring to? I have a pair of VSS 6807-XL with quad Sups - I know that each chassis has 3 VTT modules, i am unsure where the error is pointing to? %C6KENV-SW1-4-VTTFAILED: VTT 8 failed %C6KENV-SW2_STB...

Hi, I have a really odd problem with my Cisco 3560 (with POE) switch. The ports of the switch are all set to various VLANS (access mode), except 1 port that is set as a trunk. The problem comes when I connect my QNAP NAS drive to 2 of the designated ...

I am trying to connect a Cat3560G switch to an N7K pair via a vPC.  The VLANs I wish to trunk are being suspended, I am getting the following error messages:2010 Jun 22 17:03:36 N7K-Core1 %ETHPORT-3-IF_ERROR_VLANS_SUSPENDED: VLANs 2,301 on Interface ...

Today I was told changing interface bandwidth will cause interface flapping. I am unable to repro. Is there any platform on which changing interface bandwidth causes traffic interruption with EIGRP? AFAIK I don't think it has impact on availability w...