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Help with "switchport trunk allowed vlan"

Hi,I have a Cisco ASA 5520 which has a 3750 trunked off it (see diagram, ingore the ASA standby).Everything is working, but I can see the follwoing vlans are allowed through the trunk - 3,4,6,7,9,10,300, but vlan 2 isn't in this allow list and it sti...

whiteford by • Level 1
  • 1404 Views
  • 21 replies
  • 0 Helpful votes

Resolved! Static DHCP bindings

Hi,I'm very new to Cisco, so bear with me. I am setting up an 1812 and I'm having trouble using DHCP to distribute static addresses. I have had quite a bit of experience doing this with other routers and thought I had it right. Using SDM, I define...

aldboccio by • Level 1
  • 14098 Views
  • 7 replies
  • 0 Helpful votes

Changing MSTP Config

I am relatively new to MSTP, and before I recommend using it for a network I am looking at, I would like a little clarification.Within a region, I have seen it documented that the region and version need to match, ot the switches will consider themse...

Resolved! Blocking address range on my router

Hi,I would like to block following address range on my router ext int.71.64.0.0 - 71.79.255.255.Will the mask be 0.15.255.255.Should I follow access-list 101 deny ip 71.64.0.0 0.15.255.255 any.And add access group 101 to int.Correct if I am wrong mas...

sushil by • Level 1
  • 349 Views
  • 1 replies
  • 0 Helpful votes

Resolved! Interview question

Hi,I have attended an interview they asked me one simple question but i have some dought on my answer.question: A router with single interface connected to L2 switch, we want 5 Vlanswhere do we create the Vlans?where to add the route for intervlan co...

wireless vs. wired broadcasting

I'm not sure really how to ask this, but I have done some testing in a classroom on my college campus using a wired connection and then a wireless connection. When connected wirelessly, I can see other devices in the network. When connected through...

waldronks by • Level 1
  • 1603 Views
  • 11 replies
  • 0 Helpful votes

Resolved! Creating command IP on switch

I currently have to console into one of my switches that uses a private 172.x.x.x address and want to give it a command IP address in order to SSH into it. I'm not sure what the commands would be to do this....any help would be greatly appreciated!!

waldronks by • Level 1
  • 513 Views
  • 4 replies
  • 0 Helpful votes

ACL between 2 vlans

I am looking to create a secure vlan where only specific vlans (or hosts) can access it on a given port. For exampleint vlan10 ip address 192.168.1.1 255.255.255.0And only the following can access it:192.168.20.0\24 port 3389192.168.30.0\24 port 22,...

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