Questions tagged [network]

For questions about Networking that includes design, and use of a network, the physical cabling, hub, bridge, switch, router, and so forth. Anything in relation to networking and its technologies.

15 questions with no upvoted or accepted answers
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Cisco nexus 9396 rebooted with reason xbar_client

Today my one of cisco nexus 9396PX switch got rebooted and this is what i found, based on following logs what could be wrong? We don't have Cisco support for this switch, trying to see if i can get ...
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70 views

Cisco nexus STP loopguard

I have cisco nexus switches in vPC and they are connected to HP c7000 blade center switches and all my c7000 blade server has Linux Bridge is running, i believe something went wrong somewhere in Linux ...
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47 views

sflow configuration Cisco Nexus 9396PQ

We have Cisco a Nexus switch with M12PQ 12x40G GEM expansion card. Today when i enabled sflow on one of 40G interface i got following error: # sflow data-source interface e2/12 In order to enable ...
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99 views

Help with network setup issue (small network)

I am trying to set up a new network for a small business, and I can’t figure out what I have misconfigured. Hoping someone can provide me with some ideas. I have 6 VLANs set up. 10.10.10.0/24, 10....
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150 views

Simple Token Bucket - Policing - Terms - CIR, CBS

I have gone through token bucket algorithm. However, I am struggling to apply this knowledge into the real devices like CISCO, etc. So, for QoS policing, interface meter. I am trying to understand ...
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48 views

QOS - the need for it and verifying it

Just some straightforward questions, hope gurus here can shed some light 1) show int - output queue -> this is the hardware queue (tx-ring) or this is the software queue ? if I see drop, this means ...
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300 views

Even ips pinging but odd ips not pinging

We have following network, and i have multiple host connected to TOR switches configured with public IPs. We have HSRP running on vPC switches. interface Vlan100 description *** Public VLAN *** ...
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177 views

How does a Switch Fabric Module work internally?

I am interested how does a switch fabric module work internally. What interfaces does it use to physically connect the I/O modules on switches? Where are the CAM / MAC tables of the switch? Are ...
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22 views

Modbus Wireless

What is necesary to implement a modbus over wireless? I know that ethernet and modbus have different application layer different which evolves different package format and different physical ...
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2answers
83 views

Why does Nmap not detect a host which is active and responds to Ping?

I have connected to another laptop via the LAN cable, i am able to access the services running on the other laptop via Ip & Port. When i Ping that Ip, the machine is successfully responding. But ...
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49 views

Unable to ping from one computer to another

Below you can see the topology of my network in cisco packet tracer. What I am trying to do is ping B2-Guest from B2-Management. When I try to ping B2-Guest from B2-Management the packet is lost at ...
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19 views

Confuse about type of handover in Mesh Router?

I have difficulty in understand the concept of handover which can be categorized into two: Horizontal or Homogeneous handover Vertical or Heterogeneous handover Horizontal handover occur within the ...
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85 views

Deploying Segment Routing in Cisco XRv9000

The Workflow for Deploying Segment Routing according to this is the following: Configure the Segment Routing Global Block (SRGB) Enable Segment; Routing and Node SID on the IGP Configure Segment ...
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421 views

pfSense: Route traffic from LAN to OpenVPN client

I have set up OpenVPN on pfSense, and it works almost the way I want it. The client connects to the pfSense box from the WAN, is assigned a tunnel IP and can communicate with all the networks on the ...
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1answer
48 views

Can not add a Physical port into LAG

Using SuperMicro network module, which related to Intel SDN product, the command PDF . and the Web GUI manual. there I have qe57, qe61, qe65, qe69 four upstream ports, I want to aggregate them to one ...