I am working on mapping layer 2 devices by parsing the output from "show LLDP neighbors detail". The network contains only Cisco devices. To properly create the maps, I require the following fields: - Local Intf (source interface)- Chassis ID (target...
Forum Posts
Resolved! CBS350-24T-4x STACK LAG Configuration
I have two CBS350-24T-4x switches Stacked together using the 10G SFP+ ports in Native Mode.I have created a LAG group comprising of 4 interfaces - GE1 and GE2 from each of the units.LACP is disabled When I connect the LAG group to a Cisco SG350X LA...
I Need to replace a faulty SUP Engine of Catalyst 6506 - E (only one chassis and one SUP, no redundancy). I want to know the procedure,
We have a 4500X as a core L3 Switch with the DC and DNS servers behind a 2960X stack attached to the 4500X as a Layer 2 switch. If one of the DNS server is downed or we shutdown the port it is attached to on the 2960X stack, after 10 minutes, the 45...
We have multiple Cisco 3750X switches in our environment, and they are currently running 15.0(2)SE7 and we are trying to figure out what the next best version to upgrade to would be. Curious what others thoughts are to jump to the latest 15.2.4E10? ...
Resolved! Catalyst 6504-E Errors
Recently got a 6504-E. I am running into these errors below. I've done some digging where it seems to be the cards aren't supported by the VS-SUP2T-10G that is install. Little lost on which cards I should buy, or switch out the supervisor card. Wante...
HiI just joined a company, there is an issue, on a L3 switch they have two vlans.Vlan 1 have 12 host pcsVlan 2 have access pointsThey dont want pc's to communicate with access points.But they want 1 pc to communicate with both vlans, and they dont wa...
Hi team, We have fiber to desk setup in our environment . We are currently using 4500 series chassis with module WS-X4248-FE-SFP . So, for end user connectivity , we are using fiber to desk converter. We are now replacing our chassis with new 9k seri...
I am reading the CCNAv7 materials within the Security chapter, specifically the 'Spoofed Gratuitous ARP Replies. The logic makes sense but the diagram to this attack leads me to other questions:1. When an attacker sends gratuitous ARP replies (which ...
Hi, I have a brand new 3650 Switch and have followed the Switch Getting Started Guide (as a new user). After Post it tells me to press the Mode button for 3 Seconds+ and the green lights to the right will all light up and the switch will go into Expr...
Hi! So I have this network and I need to apply NAT overload on router 1 and router 2. Whenever I apply it (NAT overload) on 1 of them, everything is fine, I can ping every device on the whole network. But when I apply it on the second router, I can ...
Resolved! 3650 express setup
I have an issue accessing the express setup on a 3650 switch , following the guide i power in switch and wait for POSt to finish, then should be able to hold mode switch for 3 secs to enable express mode where switch turns into a DHCP server and has ...
Hello team, Am working on Nexus7k and trying to investigate the cause of packet loss when user send pings on some nodes to remote server. I have attached a sample of the ping result from the n7k to the server. Just in the learning process especially...
Resolved! CISCO Router fiber connection
Hello.I'm looking for a cisco router to authenticate the internet provider and that allows fiber optic communication. Those are the only two really important features for the project. What do you recommend me?Thank you.
I recently attempted to convert individual 3850 switches into a switch stack, but the switch that I attempted to configure as primary became a member instead so now I'm trying to remove the switch stack config and revert it back to the prior state. T...
