Switching

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 ...

Hi allcan you please suggest me , which series of cisco router should i have to opt for : which should have the basic functionality     1. Natting2. SHould Have good support for VOIP.3. 2-4 outside interface and 2 lan interfaces.Thanks in advance.Reg...

Hi,I am having some difficulties to have a stable connection on a Cisco 881. I have a IP Sla running with an ICMP-ECHO towards the uplink router. Linked with this is a tracking on the IP SLA so I can shutdown an HRSP instance with the tracking. The d...

We are trying to setup monitoring through RSPAN. One server in particular is virtualized in vmware. To force traffic out a specific physical/virtual nic would eliminate redundancy, so I'm trying to setup RSPAN to monitor a vlan -- we can do vlan tagg...

I apologise in advanced for my lack of knowledge. I started studing for the CCENT and literally am on chapter 3. I have been googleling for about an hour and hope someone can help me.So I bought a 2514 router used as a test lab. It has 2 AUI imputs, ...