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Hi Experts, We have two LAN networks. One for internal server and one for DMZ servers.We need to create  backup VLAN, could you please recommend if there is a best practices, moreover should we create two backup VLAN -one for internal servers and one...

rajvasant by Level 1
  • 1198 Views
  • 3 replies
  • 0 Helpful votes

I have just started using ACL's in my environment. After creating all the ACL's I want in place I started monitoring to see what was denied. The one thing that I keep seeing is access to tcp port 33621denied. It looks like just about every host in my...

Hello there! I'm studying for my CCENT exam and this practice question in the book keeps tripping me up.  I'm starting to think that it's a typo.   The problem is regarding adding one subnet to an existing design.  The existing design already has the...

Hi! I would appreciate if you could help me answer if my concerns are valid. I built a new network with 1 core + 7 access switches. All switches are 3750G. Core has an IP 10.100.1.1 and all access switches have their default route pointing to the co...

Alex K by Level 1
  • 545 Views
  • 3 replies
  • 0 Helpful votes

hi All, I receiving this error message while doing port channel configurations. %EC-5-CANNOT_BUNDLE2: Gi3/0/5 is not compatible with Gi2/0/9 and will be suspended (trunk mode of Gi3/0/5 is dynamic, Gi2/0/9 is access)

Hi, I have encountered a strange behaviour in a network and I'm not sure what's happening. I think it looks like a duplicate IP but I'm not sure. I'm located in the company headquarters, when I ping the devices (PCs, switches, routers...) located in ...

Resolved! Nexus mgmt0 vs vty

  I'm just getting back on Nexus. I have inherited several 5k and 7K, some have the mgmt0 interface set along with an associated ACL, some only have VTY set, some have both.. What is the difference ? I need to start running compliance checks and I wa...

rpinon by Level 1
  • 621 Views
  • 3 replies
  • 0 Helpful votes

Hi, I have very less exposure on access-lists. I am facing a problem where in we have identified a roughe DHCP server creating problems in network. I ran wireshark on a system and identified the roughe DHCP server IP to be 192.168.24.1 which is ACK ...

night-fury by Level 1
  • 11614 Views
  • 11 replies
  • 0 Helpful votes

Not sure if this belongs in switching for wireless.  I have a weird issue on a 3650 switch.   -The network is all flat 192.168.1.0/24.   -Switch interface VLAN is the default gateway of all PCs and wireless at @192.168.1.1.   -Switch has default rout...