Switching

I need advice on where to place uplinks on switch stack, and which switch should be secondary master.  For example, I have a stack of 5 switches (1-5 racked vertically) my first switch is set as the master, second switch is set to take over for the m...

Dears, I have low memory problem in 2 switches WS-C2960-48PST-L, using IOS 12.2(55)SE9. when this problem occured the 2 switches became down and i see "%% Low on memory; try again later"  when access by console. i saw more than bug id regarding this...

Hi folksI have an old WS-C3750G-24TS-E running SW version 12.1(19) that I would very much like to update to a more up-to-date IOS version. From the release notes I see that the switch will need to be running 12.2(18) minimum to be compatible with the...

Hi, I am going to be deploying DHCP snooping along with IP device tracking to aid with the Dot1x solution also being implemented. As IP device tracking is activated, this also means Dynamic Arp Inspection will be running. My question is however, if ...

HI guys, I have           --[switchA]---[swB]--[coreswitch] ----[ASRwan01]-linkX-- [routerC] connected to other sites via mpls and  dmvpn . I have picture attached.   on the core switch i have eigrp for networks 10.0.0.0 by default summarized (there ...

Hello, I would like to know if there is some laboratory or emulator to test this kind of switches. In fact, I would like to test Port Channel, Fabric Path, Quality of Service, Security, Users, Events, Troubleshoting, etc. Do you know some guide or...

Hi buddies, i need you help please. I just crashed my 3750 by putting a wrong IOS. Currently, the switch is no booting. And i dont have enough space to copy the correct IOS on the flash from Rommon mode. Can anyone help please ? Is it possible to de...

Question 1 When a multicast is streaming from an interface will the switch (Cisco Nexus 9372PX) send periodic IGMP membership queries to that interface, or is multicast streaming on the interface sufficient to maintain multicast group membership wit...

Hello! We recently bought one of the new "The Greenest Catalyst Switches Ever" to replace old 3750 series. We noticed that the "Hulc LED Process" is consuming more than 22% CPU all the time. IOS: 15.2(2)E3 I have several remarks: 1. When pressing...

Hi buddies, I have 2 switches like below: 1.WS-C3750G-24TS 2.WS-C3750G-24TS-1U Both installed IOS on them are in same version, I want to sure there is no problem when I want to stack them. The reason I'm worring about stacking them is becuase of diff...

Hello All,      Today my team was tasking with adding a vlan to a few of the port channels that lead from our 7ks to our 5ks.   Below is an example of the changes we made and the outcome we received.  The 7k had a port-channel configured very similar...

I have a 6509 switch with "no ip igmp snooping" enabled. I would like to take this command off, the switch is dropping multicast packets periodically (not sure why this command was applied in the past, looks a testing scenario) When I enable this com...