Switching

I upgraded a 3850 switch to IOS-XE16.6.4 - an I am now getting these messages in the log. %SSH-3-NO_MATCH: No matching kex algorithm found: client diffie-hellman-group-exchange-sha256,diffie-hellman-group1-sha1 server diffie-hellman-group-exchange-sh...

%SW_MATM-4-MACFLAP_NOTIF: Host c0ee.fbda.b50e in vlan 200 is flapping between port Gi1/0/13 and port Gi1/0/14   This is the error , when i logging into my cisco switch 3650, These two ports are connected to Cisco wireless controller, and in wireless ...

I have Cisco 3750G series stack. Where is one Catalyst 3750G-48TS like MASTER and six members Catalyst 3750G-12S. Used IOS 12.2(55)SE12 C3750-IPSERVICESK9-M. The current SDM template is "desktop access". Stack working without problem long time. It wa...

Hello, I have an issue with the newly build VSS pair, where once configured with appropriate commands the primary VSS pair is booting normally and becomes Active but when the secondary VSS Pair is booted up it's getting crashed and booting in ROMMON ...

Hi,we have inserted into a network with VTP a Cisco Switch 2960-S, not knowing that had installed IOS LAN lite.Now I discovered that it can handle up to 64 vlan. In the network there are currently configured 62 VLAN: what happens when we exceeded the...

So I have a pair of lab 4510 switches joined VSS. The standby SUPs in both switches are showing standby-cold RPR mode. Any ideas?

Hello, I have a 3845 router as the GW running an NM-16ESW card with one GigE port being used as the trunk to the backbone c2960x switch. CEF is enabled globally on the 3845 and on the NM-16ESW GigE port. However the NM-16ESW GigE port input queue is ...

Hello everyone,   I have a passive Rack with some servers in our office.   Currently we have 1GB links for our servers, however we are migrating all the servers from Copper to Fibre.   We mainly use Cisco in our environment, so I was wondering if I c...

Hi there!   I have the following issue and cannot find the right solution through google so i need you guy's help!   We are using a WS C2960x switch combined with a Ubiquiti AP AC Pro which is used only by smartphones to connect and be able to browse...

We have most of our ports configured for both data and voice using the Cisco method of using switchport voice vlan.  Example of our config:   interface GigabitEthernet1/0/1 switchport access vlan 10 switchport mode access switchport voice vlan 20 ...