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Forum Posts
so we have a stack of 8 x 2960X switches with te1/0/1 and 4/0/1 configured as trunked uplinks to our 4500X core (both using 10GBase-SR sfp's) , works fine no issues. We also have 3 additional 2960X switches hung off of gi1/0/50, 2/0/50 and 3/0/50 als...
Resolved! Memory Leak on 3850
Hi Guys, I recently read a field notice from Cisco regarding memory leak on 3850. Below are the details:FN -> https://www.cisco.com/c/en/us/support/docs/field-notices/703/fn70359.htmlBug Page -> https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvh8937...
Can't login to Mobile iOS Version 3.0 English Cisco Packet Tracer. My mobile phone is LG V20.After login to netacad appears to login to canvas PTmobile but without the "confirm button" there is only a "cancel button" without the ability to scroll the...
Hi, We're going to upgrade a core infrastructure at several locations (A, B and C). At each location 2 Nexus 5k are installed which are linked together via a VPC connection. The locations A and B are contain the same VLANs (streched VLANs) and locat...
Hi guys, I noticed the following strange thing on different layer 3 switches. The client requests an IP address but the switch is trying to relay it instead of sending ack. We're using 3750s mainly, one acting as the dhcp with routing activated. It p...
VLAN 60: 10.20.213.64/28 excluded address : 10.20.213.65 - .69VLAN 80: 10.20.210.0/23 excluded address : 10.20.210.1 - .15VLAN 60 (HOST PC) : 10.20.213.66VLAN 80 (HOST PC) : 10.20.210.2 Backbone network LAN C : 10.20.208.0/23 For static : i a...
Hi everyone, I'm sure this will be a very simple question for you guys. Member switch of my stack pair failed last week and I'm keen to replace it asap. Cisco 3750-48Switch 1 failedSwitch 2 master To replace switch 1, I have another 3750 with blank c...
Resolved! Connecting 3 buildings
I need to connect 3 buildings with redundancy but want to isolate the routing within each building as much as possible. Each building has a switch however only 2 buildings have layer 3 switches. THe L2 switch (R2) is a 2960 switch. I want to create a...
Resolved! Is DHCP Snooping not working?
We have some 3560s in our environment. Currently we had set an interface with configuration like below interface FastEthernet0/26 switchport access vlan 110 switchport mode access switchport nonegotiate switchport voice vlan 1019 switchport port-secu...
I am reading conflicting information on this....is Network Essentials a valid option for all Cat 9000 series or just the lower end 9200/9300? I am configuring a Cat 9410 and it looks like it comes with Network Advantage and then you select either DNA...
I acquired a WS-C2960S-48FPS-L through an auction. I want to try and use it for my CCNA training. The first thing I did was copy the newest firmware over to the device using the archive download-sw /leave-old-sw /reload tftp://192.168.10.7/c2960s-uni...
Resolved! How to deny all hosts in one vlan from reaching hosts in another vlan just for web services?
I want to deny all hosts in VLAN 60 to access VLAN 80 for webservices. All other traffic must be permitted. My subnet address for VLAN 60 is 10.20.200.64/28My subnet address for VLAN 80 is 10.20.203.0/23 My commands are : access-list 150 deny ...
Resolved! L3 VLANs to ASA NAT Issue
Hay guys I have a L3 switch with multiple vlans and inter-vlan routing going on. The L3 switch connects to an ASA appliance which splits to the outside and a DMZ. I have configured NAT and the servers in the DMZ can ping outside and NAT takes pl...
Resolved! Destination Host Unreachable
I'm a beginner in networking and Cisco packet tracer.I'm currently working on a wireless LAN configuration network(.pkt file attached below.)I've done the basic configurations.When I ping PC2 from PC0/PC1, the message- "Destination host unreachable" ...
If you configure flowcontrol on an interface (flowcontrol receive on) on a 2960G then the "show interface"output shows that input flowcontrol is "ON"If you configure flowcontrol on an interface (flowcontrol receive on) on a 3850 then the "show interf...
