All Questions

0
votes
0answers
5 views

How do I calculate the likelihood of a network partition if nodes connect randomly? [on hold]

In a decentralized network, if each node connects to N random nodes, there is some likelihood that this will create multiple networks rather than a single network graph. How do I calculate that ...
0
votes
0answers
12 views

Multi Area OSPF configuration in cisco packet tracer

I am a bit confuse in the concept of multi area ospf. I posted 2 days ago. And I was asked to leave the one interfaces of each router out of the circle. Now the center circle is area 0. The top circle ...
0
votes
0answers
9 views

Benefits of encapsulation? [on hold]

Some benefits for encapsulation can include: data can share network links since chunk of data is identified individually, data can be flexibily routed over different routes, encapsulation allows ...
0
votes
0answers
7 views

Hook second router to internet wirelessly? [on hold]

I have a router hooked up to a modem, and I have another router. What I want to do, is have the router broadcast a completely different network than my other router, but still have my second router ...
0
votes
0answers
7 views

How can I add a storage device to my router? [on hold]

How can I add a storage device such as pendrive to my router , which can be accessed by all device connected to the lan network (router) ?? NB : low cost is a must 😁 TIA
1
vote
1answer
188 views

TCP Three Way Handshake?

I have the following query about the tcp handshake. To establish a connection the server must send a packet with SYN flag to 1 Then the server replies with a SYN,ACK flag to 1 , and afterwards the ...
0
votes
0answers
14 views

How to do IP masquerading on MacOS (10.14+)? [on hold]

I am looking for the equivalent Macos command to the linux: sudo iptables -t nat -A POSTROUTING -o en0 -j MASQUERADE The reason i want to do this is I have a VPN that has the default route, but i ...
0
votes
0answers
9 views

Ftp uploads are slow on windows, not macos or Linux [on hold]

Our church only has dsl avaliable to the area, so we currently have 8 runs of 25up 5down dsl from telus bonded by skyway west. It works decently all except for one thing our ftp uploads are very slow ...
0
votes
0answers
19 views

Huawei APs on Alcatel switches? [on hold]

I work in Serena Hotel. Here we have a Core switch 9700 on which Huawei Access Controller is connected on Port 2/17. Then we have 2 distribution layer switches 6850 connected on Core switch Port 1/1(...
0
votes
0answers
8 views

Problem with Sharing a 4G Network using multiple Access Points [on hold]

I have a really interesting problem in my home network currently. Due to DSL speed limitations of our ISP in my area, I upgraded to 4G network with roughly 3x the speed I get from my previous DSL ...
-1
votes
0answers
15 views

Splitting into 4 subnets [duplicate]

I am trying to attempt a past exam question. The question is as follows, Consider a router that interconnects four subnets: Subnet 1, Subnet 2, Subnet 3 and Subnet 4. Suppose all of the interfaces ...
0
votes
1answer
22 views

What happens if we try to access an IP Address that does no exist

Beginner Question: I just read an article talking about how the internet works and how routers make sure that packets arrive at the destination. However there is one thing that is not explained ...
0
votes
0answers
7 views

Multiple DHCP servers detected by access points [on hold]

I’m having an issue with our internal network and voip network. I currently have it setup as a non-converged network separating our two data switches and one voip switch. We preferred not having our ...
0
votes
0answers
11 views

Is pair cable always full duplex? Can it be half duplex at double the bitrate? [duplicate]

This is probably a newb question, forgive me. For pair cable, there are two signals that can be sent: following that logic, it seems like you could have two situations: full duplex at bit rate X in ...
0
votes
0answers
8 views

How to PORT forward through a VPN? [on hold]

I'm connecting to my client's PC through a VPN that put me inside his network and then through RDP (Remote Desktop Protocol) using the Windows client. Everything works well but I need to have access ...
0
votes
2answers
36 views

How to give one pc with dhcp a default-gateway while the rest use static ip and static default-gateway

I have this topology where the PC0, Server0 and PC4 use static ip and static default-gateway, but one pc is Request DHCP, so i have to use DHCP ip address for him and static ip for the rest, now the ...
2
votes
1answer
23 views

Suppress CLI terminal output on IOS

I would like to know if we can suppress certain lines from being displayed on the CLI. Example: I call following TCL script, that in itself calls some other scripts. What i Get on the screen is this: ...
0
votes
1answer
37 views

Giving different OSPF areas to a router

In the topology shown above each circle represent an area. Now I want to configure multi area OSPF on each router. So for the first router can I do like this: router ospf 109 network 192.168.11.0 0.0....
0
votes
1answer
19 views

How should DHCP servers respond to subsequent requests from same MAC address? [on hold]

I'm handling a wireless router device (Asus RT-AC66U) that advertises a so-called Repeater Mode. This mode allegedly picks up an existing WiFi signal and repeats it, while it disables DHCP and NAT ...
0
votes
0answers
21 views

Is this setup possible. Multipler user PC's & KVM. 1 Shared PC - Switch [on hold]

I'm not in an IT role or an engineer. In fact i'm usually just on the coding, excel & share point site. However I do have a requirement that i want to check is possible as it seems to have been ...
0
votes
1answer
26 views

What does multi area OSPF mean?

Does this mean that all the routers in a given topology should have different values of area or just one i.e. area 0?
0
votes
0answers
8 views

3G EA CLICK board doesn't respond to at commands anymore [on hold]

I am sending AT commands to a 3G EA CLICK cape(which has a Quectel UG95 chip). The problem is that the cape doesn't return anything. I have the cape connected to the PC through a USB-to-UART converter(...
2
votes
1answer
57 views

Setting Destination MAC address for RTP/UDP packets

I have a requirement where I have to send the UDP packet to a destination multicast IPv6 address. In addition to that the packets must also have corresponding destination multicast MAC address set. I ...
-1
votes
0answers
8 views

OPENWRT - DDNS and DNS Filter [on hold]

Codes: package ddns option ip_source 'web' option ip_url 'https://myexternalip.com/raw' package dhcp list server '103.247.36.36' list server '103.247.37.37' DDNS Service - getting the current ...
1
vote
0answers
17 views

routing with multiple NICs (connected to multiple APs) that were all assigned the same LAN address [on hold]

I have 4 wireless APs based on the ESP8266. These APs all broadcast distinct SSIDs, but each serves LAN addresses in subnet 192.168.4.XXX. The subnet value is not configurable. Then, I have a Linux ...
-1
votes
0answers
10 views

Is it possible to simulate a cable modem connection? [on hold]

I am trying to setup a test network. I want to provide an equivalent to a cable modem connection without actually having a cable connection. The reason is I have a dd-wrt modified router I'm trying to ...
2
votes
1answer
15 views

Does the dot3StatsInternalMacReceiveErrors counter include Vlan mismatches

I am wondering if the dot3StatsInternalMacReceiveErrors counter includes VLAN mismatches, i.e. Discards due to VLAN mismatch. http://oid-info.com/get/1.3.6.1.2.1.10.7.2.1.16 only explicitly lists ...
-1
votes
0answers
19 views

How to use multiple power-lines on the same store [on hold]

I have a TP-Link ethernet only power-line that works like a charm. But my needs have changed and now I want to connect two more devices, one that will work as an access point in another room and one ...
-1
votes
0answers
15 views

IPFIX Flows from OVS Linux Bridge are not accurate [on hold]

I’m struggling to understand my IPFIX flow data. To explain: I have an Ubuntu (16.04.2 LTS Xenial Xerus) box, and within that box, I have a single Linux bridge: root@Ubuntu1:~# ovs-vsctl show ...
0
votes
1answer
20 views

Netgear M4300: Is it possible to enable multiple destination ports for mirroring?

I have a Netgear m4300 12x12f. Using the web Console I'm able to use one global port for mirroring traffic from other ports. Is there a way to have different ports mirroring different traffic? I'm ...
-1
votes
0answers
24 views

Diffrences in Latency on LAN [on hold]

I have some problems on our LAN with (guessing) latency. We have a monitoring system and we have one server that is connected to a SQL server. And we are monitoring a service and ping, so the ping ...
3
votes
1answer
30 views

Finding MAC address with OUI List

I'm in the process of labeling the interfaces of my Cisco 3750G with descriptions referencing the device type that is associated with that port. I understand that I am able to run a show mac address-...
-1
votes
1answer
22 views

Connect to the Same VPN with two different PC on the same Private Network [on hold]

From two different PC on the same private Network, is it possible to connect to the same VPN with the same credentials???
-1
votes
2answers
28 views

Why do we only factor in the transmission delay of one node in a two hop transmission? [on hold]

I'm trying to understand two hop transmission from my lecture notes. To get the total delay time for transferring data, the notes say that we only factor in the transmission delay of the host with ...
-1
votes
0answers
11 views

how to advertise k8s Cluster-IP range and POD network via OSPF to upstream router [on hold]

I can't use Kube-router or Calico CNIs which are doing this task using BGP since I already use MetalLB in the k8s that runs BGP instances on the nodes. I want to use OSPF here but the question is if ...
0
votes
2answers
40 views

Monitoring URL requests on foundation's LAN

We are having a internet cafe with guests walking in and out. We would like to keep an eye on browsing traffic on LAN 192.168.2.0/24, because we don't want guests to visit wrong websites. In such ...
-1
votes
0answers
13 views

Sonicwall Firewall block all my external Connection [on hold]

i am using the corporate network of the company, and Sonicwall Firewall block all external connections Https and Remote Desktop Connections. Internal is everything fine, but external is nothing ...
1
vote
0answers
17 views

Can QoS provide a benefit after data has gone through other unmanaged switches first? [duplicate]

Details about the devices We have a 24 port NETGEAR managed POE switch that has QoS capabilities. We have the following unmanaged switches, 24 port Cisco POE, 48 port Cisco, 48 port NETGEAR, and 24 ...
2
votes
1answer
50 views

Do unmanaged switches honour QoS priorities set by managed switches?

Details about the devices We have a 24 port NETGEAR managed POE switch that has QoS capabilities. We also have the following unmanaged switches, 24 port Cisco POE, 48 port Cisco, 48 port NETGEAR, ...
5
votes
2answers
43 views

What's the `line protocol` and `Link`?

When I show a switch interface information, there are line protocol and Link: Switch-A(config-if)# show interface gigabitethernet 0/3 Gi0/3 up, line protocol is up (connected) Bridge Port Type: ...
1
vote
0answers
38 views

Routes stopped redistributing through OSPF

I was entering a number of secondary addresses on some VLANs. In total there were 10 secondary addresses added. The subnets added were from three publically routable /24s (I will call them 25.0/24, ...
-1
votes
0answers
11 views

Secondary router used as access point has extremely low speed [on hold]

I have had a spare BT Homehub 4 set up as an access point connected LAN-LAN via power line adaptor for boosting signal in my house. The main router is an ASUS DSL-AC68U. I receive download speed of ...
0
votes
0answers
13 views

is there a way to force a PC to only accept a certain router as its DHCP server? [on hold]

i would think you could somehow force the PC to only accept a specific MAC address as a DHCP server. But then is there a way to require the PC verify the DHCP server is actually the DHCP server it's ...
-1
votes
0answers
13 views

Cisco Packet Tracer - How do I connect these networks through a router? [on hold]

I am trying to connect these two switches through the router as shown and also correctly configure the wireless router on each network so that they connect to their switch. Basically anywhere there's ...
-1
votes
0answers
16 views

Making Ubuntu 14.04 “Man In the Middle” [on hold]

I want to capture the traffic between my router and a Microcontroller device using wireshark, but my router doesn't support port mirroring. I read in another forum post that if I have two Ethernet ...
1
vote
0answers
19 views

How can I filter the exact interface in huawei switch?

How can I filter the exact interface in huawei switch? you see when I use the include GigabitEthernet0/0/1 to filter, there will get many GigabitEthernet0/0/1* interfaces: <Z178A>dis ...
1
vote
2answers
46 views

Passing Light but No Data

Can anyone tell me what type of jumper I need to use when connecting single mode fiber to multi mode fiber? I have a run of multimode fiber that was extended with single mode. I have used both single ...
1
vote
1answer
22 views

High CPU utilization on Juniper ACX2100 chassis fpc

What is the cause of high utilization of cpu on fpc.Below is the output of which depicts utilization as 99 but router is running just fine. show chassis fpc Temp CPU ...
-1
votes
0answers
22 views

how to obtain the forwarding table of a router whose ip address is known? [on hold]

I am working on a project where i have to build a network map of my campus. I wanted to see the forwarding tables of my routers to know about its output links and subnets.
3
votes
2answers
32 views

Firmware Compatibility with 15.x IOS versions

I have a Cisco switch stack with both PoE and non-PoE switches as members. Is there any compatibility issues with the firmware version 15.0.2-SE11 between the following devices? 1x Cisco WS-C3750G-...

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