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Greetings!So I was practicing to configure VTP and VLANs. For a start, I created 3 switches (only 2 being turned on). The trunks are working fine as the switches are able to acquire an IP addresses via dhcp from a dedicated router and vtp appears to ...

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turtle666 by Level 1
  • 120 Views
  • 6 replies
  • 0 Helpful votes

Hi,I have a C9200L-48P switch with 4x1G uplink module.Port Gi1/1/1 does not have an LED blinking when connected to another switch.Ports Gi1/1/2-4 seem to work fine.Could anyone please guide me on troubleshooting the port and also advise action?  

Ranjita by Level 1
  • 88 Views
  • 2 replies
  • 0 Helpful votes

The VLANIF of the core switch acts as the gateway for client. The Client is unable to obtain the gateway IP, but by manually adding ARP, it can communicate with the gateway. The core switch has the correct MAC and ARP information for the client, a...

Translator by Community Manager
  • 88 Views
  • 1 replies
  • 0 Helpful votes

Configure StackWise-Virtual to configure the Mgmt port as shown in the picture.However, sometimes I couldn't communicate with the Mgmt IP, so I monitored it.Normally, the MAC comes from MGMT L2_1, but when communication is not possible, the MAC comes...

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Questions by Level 1
  • 65 Views
  • 0 replies
  • 0 Helpful votes

I got a doubt about trunking protocol on switches which puts in communication different vlan, and a L3 device with its  gateway IP protocol <span;>which puts in communication different networks.1st. QuestionFirst of all even if maybe is a silly quest...

rabbdavid by Level 1
  • 749 Views
  • 38 replies
  • 0 Helpful votes

Hi to all,i am facing a strange issue with poe devices on a Cat 4500 with SUP7L and the WS-X4648-RJ45V+E  card.When we disconnect a poe device from the switch and we plug int again , the device gets in power deny state.And if we plug this device to a...

Ditter by Level 3
  • 294 Views
  • 12 replies
  • 0 Helpful votes

Hi all,I was reading cisco book where it says Sinle vlan can support multiple subnets.Because switch ports are configured for vlan  number only and not a network address any station connected to a poprt can present  ant subnet address range.if someon...

mahesh18 by Level 6
  • 105694 Views
  • 10 replies
  • 6 Helpful votes

Hello,As per the below diagram I have two switches S1 & S2. Hosts H1 & H2 are connected to the switches and are in different vlan but same subnet. So, by default they will not communicate as they are in two different broadcast domain.To make them com...

SupritChinchodikar_0-1712901586703.png

I have a less then a dozen Cisco 3850 switches that I am working on.  I need to configure 802.1x authentication.  The issue is the switches are reaching out to Cisco ACS and I need to set up radius server to enable 802.1x.  The Cisco ACS I found out ...

John N by Level 1
  • 332 Views
  • 8 replies
  • 0 Helpful votes

I have been instructed to delete any weak MD5 or 96-bit MAC algorithms on all my switches.  My current setup I have the following:hmac-sha2-256hmac-sha2-512 hmac-sha1hmac-sha1-96  Out of these which would be considered to be weak MAC algorithm? 

John N by Level 1
  • 109 Views
  • 2 replies
  • 0 Helpful votes

Resolved! Routing rip issue

The routing table of router r2 and r3 aren't updating and their corrisponding hosts aren't able to communicate outside of the LAN. Hoping to get a reply asap..!

imrann by Level 1
  • 56 Views
  • 1 replies
  • 0 Helpful votes

Hello all,I have to provide IP for many clinets which each of them has to have individual VLAN ID. I am using q in q to provide ctag vlan under svlan.the configuration on my router is like below:ip dhcp pool SVL-200network 10.225.0.0 255.255.255.0def...

MYazdian by Level 1
  • 272 Views
  • 10 replies
  • 0 Helpful votes