Switching

If I have PIM enabled on 3 SVIs on a L3 switch, they will forward multicast traffic across each other in either direction, correct? If I want to limit the amount of chatter moving across these VLANs would I use multicast boundary with an ACL on each ...

Hi!I will be start with the disclaimer that I am very technical, but a huge novice to the enterprise-grade Cisco swtiches.Can someone explain to me how IOS software versions are licensed on a Catalyst 4507 switch?  I am very confused at this point.Fo...

I am looking to see how much traffic is being sent from a given vlan to a specific server.  Tools like solarwind are not able to provide graphs for something as specific as this.  Has anyone done this?

Can I get your opinion/pointers on the following scenario? I’m sure both ways work, but which is best?Corp VLAN 10Guest VLAN 50Both have SVI's on 2960 switch, but only for troublshooting/mgt purposes. Gateway IPs are on router.There is a router on a ...

I have configured ssh on a 2960 to use public key authentication. Now that I can securely log into ssh without a password Is it possible to disable password authentication so that it is impossible to login without the key?

I have a typical LAn environment that spans across a large warehouse. I have done alot of redesinging of the environment to satisfy the need for a disaster recover plan. I now have created a LAN with multiple vlans and must also connect all the acces...

I have 2 NX4001. Each one has an uplink to a 5K. There is no VPC between the 4K and the 5K. The 5K are  VPC enabled.There is a large number on input discards on the 4001 interfaces connected to the 5K and is incrementing.I have a server with smartfai...

Hi there,I have a pretty weird issue here.I have a layer 3 switch, if the dhcp is configure on it my phones are getting an IP and everything is fine.As soon as I configure a dhcp helper on it, phones doesnt get an IP anymore.The helper point to a win...

I have a Nexus 7000 plus 6 boxes NX2000 on backbone.I have configured on 7000 :conf t system jumbomtu 9000 exitERROR: Ethernet111/1/1: requested config change not allowed ... ERROR: Ethernet122/1/48: requested config change not allowed 1/111/14 is ...

I am a novice with networking; so, if I write something noobish, please forgive and explain. I am using a Cisco 2821 router.My provider changed my IP address today from:218.x.x.x /24  with a gateway of 218.x.x.1 /24to219.x.x.x /25  with a gateway of ...

Dear community,after 4 days incl. nightshift and went deep into the heart of the matter this support community seems to be my last resort to findsome relief from - meanwhile - desperation.Scenario:------------------For one of my clients, a landlord, ...

Hi Can anyone advise me if in a stack of 3750's, if the master was to fail and another switch in the stack had to take over as Master. Is the transition "totally" seemless with no break in service at all (other than anything connected to the failed s...

We need to change the Channel-group settings in 3750 switch from Mode ON to Mode Active. We have tried once by removing the physical interfaces from the port-channel group but we lost the connectivity to the secondary switch. please give if there is ...