All Questions

Filter by
Sorted by
Tagged with
0 votes
0 answers
8 views

Starting Docker container causes connection issues [closed]

I have a freshly installed Debian 12 system where I installed VirtualBox and Docker so far. However when starting any Docker container, some seconds pass and I loose access to the entire server via ...
Fusseldieb's user avatar
0 votes
0 answers
17 views

Selecting iBGP over OSPF [closed]

in the book internet architectures by Sam Halabi, pg 228, this is the diagram link it mentions RTC receives the 0/0 via EBGP (from its own provider), IBGP, and OSPF. It ignores the OSPF default, as ...
lost_sea's user avatar
0 votes
0 answers
6 views

Using two pi's, can I spoof my location via VPN? [closed]

I wish to set up two raspberry pis. One at home in say CA, and another at my friend's house in say NY. I then wish to connect the two pis via a VPN through the internet. Then, I wish to connect to my ...
gh0st's user avatar
  • 284
0 votes
0 answers
5 views

Why my ping jumps randomly? [closed]

For some reason, when I ping 8.8.8.8, I get a jump in ping time every now and then. I have Win11 and the drivers, bios etc are up to date. I also test it on my Macbook and a similar behavior is ...
mcqueenvh's user avatar
2 votes
1 answer
39 views

QFX10002-36Q GRE tunnel question

I have a pair of qfx10002-36q and according to their datasheet they support 2000 gre tunnels, i want to establish 5-10x GRE tunnel and each tunnel pass around ~1.5-2Gbps traffic, i want to know like ...
Blackmetal's user avatar
0 votes
0 answers
10 views

How do I wire 2 Ethernet sockets to extend my broadband please, to a garden studio when there are no striped wires, only 5 colours and 5 whites? [closed]

8 years ago I had a studio built at the end of my garden, and the electrician put in power and Cat 5 cable from the house. I have tried to put a second broadband node into it, but it won’t work. I ...
James Woodley's user avatar
0 votes
0 answers
12 views

Cisco IOS XE NAT port-forwarding wtih multiple ports

I am looking for the best approach to organize NAT port-forwarding. The setup is simple: router with one global IP and a local network behind it. Sometimes I need to pass multiple ports into office ...
kab00m's user avatar
  • 203
0 votes
0 answers
12 views

Directing single subnet traffic via multiple VLANs [closed]

I have a setup where I would like to distribute devices connected to a L3 switch in multiple VLANs but I have a DHCP server offering a single subnet to the switch. I'm attaching a network diagram ...
Sylar's user avatar
  • 101
0 votes
0 answers
21 views

OSPF loopback route learned not installed in forwarding table in FRR [closed]

This should be a REALLY, REALLY simple OSPF config. I have 2 VM running FRR that I would like to announce their /32 loopback address between each other. The config is as below: ip forwarding ipv6 ...
0 votes
0 answers
14 views

Connect 1 device to 2 different networks [closed]

I have 1 device that needs to connect to the internet trough a router with DHCP, and to a LAN that is used for a local system (this is in a hospital). This device is windows based and unfortunately, ...
TonyMadMax's user avatar
0 votes
0 answers
14 views

No internet connection on AP1 but have internet on other APs [closed]

We have 20 users used wireless connection on Cisco Meraki AP1. Few days ago, there are 10 - 15 users who have internet connection using AP1 but now have issue on connected to WiFi but don't have ...
KenjiL's user avatar
  • 1
0 votes
1 answer
20 views

Juniper EX4650 unable to connect to anything

I have recently ran into a problem, where I have tried setting up routing from interface vme to our gateway and for some reason it is unable to ping or connect to anything. What I have tried: ...
Odin2318's user avatar
0 votes
0 answers
17 views

How do I find the IP address of devices connected through two switches? [closed]

I have a series of IP Cameras connected to switch A. Switch A is connected to switch B. Switch B is connected to a laptop that needs to access the cameras. The cameras had static IPs set for switch A, ...
this_is_a_display_name's user avatar
1 vote
1 answer
25 views

Does loop show up temporaily when connecting 2 working switches in STP(802.1d)?

I am learning CCNA. I can understand the STP (802.1d) port roles and states. I wonder if the network (they have already been working) would be in loop within a very small moment after simultaneously ...
GingerKitten7951's user avatar
0 votes
0 answers
10 views

Why Is my VPN so Slow? [closed]

I configured an OpenVPN server on a Windows Server. On the same computer (192.168.1.204) I have a Web Server that I'm trying to access remotely through the VPN. I have successfully accessed it ...
Tomás Ramos's user avatar
0 votes
1 answer
24 views

Need Help on Designing Network in Warehouse

I need help on finalizing the Network Scheme for a Warehouse. Current System has 2 different ISP with total 6 wifi access point for 3 each since it's large Warehouse Each ISP has 3 WiFi access points ...
Prakash's user avatar
  • 101
0 votes
1 answer
27 views

Default Route Excluding VLAN on HP switch

I have configured HPE 5710 Layer 3 switch with multiple vlans. The Default Static Route displays it's interface as Vlan10, I am able to ping 8.8.8.8 from addresses in that vlan, including the switch ...
Chris's user avatar
  • 3
2 votes
2 answers
373 views

What type of fiber optic cable and termination should be used for temporary outdoor connectivity at an event (UPC vs APC)?

We are coordinating an outdoor event for a student contact with the International Space Station via ARISS. We will need internet for video streaming, and the nearest building with internet is 500 ...
KJ7LNW's user avatar
  • 189
1 vote
2 answers
52 views

Maximum switch using RSTP or MSTP

Great to find you mates here. I am new to Spanning Tree. According to https://www.etherwan.com/sites/default/files/setting_up_stp-rstp-mstp_and_alpha_ring.pdf STP can support up to 14 switches RSTP ...
Nafi Avdullai's user avatar
0 votes
1 answer
29 views

wondering on performance of SCP over WAN

I'm using a scp to retrive log files from linux machine. On the way between the PC and the linux machine there is WAN simulator which can be configured to some latency and delay. Setting the latency ...
user1977050's user avatar
1 vote
2 answers
77 views

What stops you from use private IPs in Internet?

I know there are some IP addresses ranges called "Private IPs" which are used in private networks and are not supposed to be used in public networks like Internet. I also read another ...
ela's user avatar
  • 151
-1 votes
0 answers
21 views

Enterprise Network Questions [closed]

I am conducting a survey to understand how Communication Service Providers (CSPs) and System Integrators (SIs) sell enterprise network products to businesses. If you have experience working at a ...
OivaL's user avatar
  • 1
0 votes
0 answers
43 views

Largest current bandwidth between US datacenters? [closed]

I am trying to estimate the high end of bandwidth between US data centres, especially in the context of high-load applications such as AI training. My current approach is as follows: Modern ...
Jsevillamol's user avatar
0 votes
0 answers
23 views

TCP Retransmission testing tool

I'm setting up two Linux agents (based on Debian) to test TCP retransmission patterns using iperf3. The output looks like this: # iperf3 -c 172.16.2.11 -p 5010 -t 5 -b 10M Connecting to host 172.16.2....
Trí Tâm Nguyễn's user avatar
0 votes
0 answers
8 views

when our domain controller does not find related zone query , what is order of priority of it? [closed]

I have one client in domain a.b.example.local that want to communicate with another client in c.d.example.local that both exist in same forest . so can anyone explain very detail about what query send ...
user96319's user avatar
0 votes
0 answers
15 views

is there a way to find a MAC address for a security camera on my home network from the device ID or IP address? [closed]

Is there a way to find a MAC address for a security camera successfully connected to my home WIFI network from the device ID or IP address? I have contacted the manufacturer and they have indicated ...
Dracon's user avatar
  • 1
0 votes
1 answer
56 views

Configuring a Cisco switch VLAN for WiFi guests

I have a Cisco Catalyst 2970 switch with a Firewalla firewall on switch port 13 and Linksys MX4000 V2 WiFi running OpenWRT on switch ports 3 and 5. I would like my Cisco to provide trunks to these to ...
PaulH's user avatar
  • 101
0 votes
0 answers
16 views

multicast flooding limits throughput?

My group's R&D lab has an Arista 10G switch, DCS-7020SR-24C2. This switch is NOT configured for IGMP snooping. I can see that it is flooding all multicast to all ports. I run an experiment where ...
Streve Ford's user avatar
2 votes
1 answer
56 views

Getting Arista drop counts via snmp

My group's R&D lab has an Arista 10G switch, DCS-7020SR-24C2. My admin (who is not a switch expert) enabled SNMP access. I want to see per-port drop counters. I tried this: snmpwalk -v 2c -c ...
Streve Ford's user avatar
1 vote
2 answers
81 views

How do switches route ethernet packets - when there are two switches in series between origin and destination?

I would like to introduce my question with the following example: Let us say we want to sent an ethernet packet from computer A to computer B via a switch We sent the packet with destination BBB from ...
user96214's user avatar
-2 votes
0 answers
15 views

How to replace explicit IP range route setting in OS with router configuration? [closed]

I have a Mikrotik Router B750Gr3 i want all requests to 192.168.5.0/24 be redirected to mikrotik router. How to properly do it? i have a mikrotik router that gets dhcp configs including ip 192.168.1....
alex's user avatar
  • 97
0 votes
1 answer
25 views

Identify neighbour causing spanning tree to block port on HPE Aruba 2530 (J9773A)

Spanning Tree is blocking one of the ports on one of my Aruba J9773A switches. How do I discover what port on what device is on the other end of the cable connected to that port? It's probably one of ...
17xande's user avatar
  • 111
0 votes
1 answer
22 views

Grounding of the shielded segment 6a

There is an unshielded UTP 5e network. There is a vertical line between the floors (upper, middle, lower). A new network is being installed on the ground floor. Since a large load of multimedia was ...
Константин Матехин's user avatar
3 votes
1 answer
360 views

MTU and MSS concept

A client and a server are separated by a router. I don't understand the principle of MSS adjustment. When the client sends a SYN packet to the server, the SYN/ack server replies with its MSS. Example: ...
Alan520's user avatar
  • 31
0 votes
1 answer
59 views

How do ISPs assign /29 public IP subnet on a single Ethernet/Fiber connection?

I recently found out the ISP provides a /28 public IP subnet to a business. I'm in the process of learning more about networking and find it interesting that 16 addresses are available through that ...
KSK's user avatar
  • 103
1 vote
1 answer
52 views

Why do routing tables and arp tables both require a field of interface?

Routing tables are queried using destination IP of a packet to get the next hop IP and to get the interface to send the packet through. But since the router will strip the ethernet header first and ...
Karan Patel's user avatar
0 votes
1 answer
23 views

Why the growth is exponential in Slow-start-phase (congestion control) even when we increase window size by only 1MSS with each ACK received [duplicate]

I want to know why do we consider congestion window size increase as exponential even though we are increasing it by only 1MSS at each ACK received (Transport Layer). I have learned that in Congestion ...
Naveen Kumar's user avatar
-1 votes
1 answer
28 views

Router SNATs incoming connections [closed]

For some reason, my router changes the source IP of incoming connections. I can't find which setting makes this happen or if this expected behavior. For example, this connection was initiated by an ...
Jim Morrison's user avatar
1 vote
1 answer
26 views

What is expected behavior when pinging DHCP-PD prefix?

I get a DHCP-PD prefix from ISP and I'm using dynv6 to be able to have dns-entries for my hosts using just the prefix and mac-address for the SLAAC IPv6 address. https://dynv6.com/ I have a small ...
harre's user avatar
  • 13
2 votes
1 answer
122 views

MPLS L3 VPN, issue with customers pinging

I created the MPLS L3 VPN architecture(screenshot in the link at the end of the post) using ARISTA vEOS images, then I got a problem with network reachability between the CE client routers. please ...
Oussama fallahi's user avatar
1 vote
1 answer
26 views

Announce ULA route to Cisco switches via SLAAC

I have trouble with Cisco switches (specifically the CBS350 series if that matters) and local IPv6 routing. I run an x86 OpenWrt as router. Its ULA prefix is fd8e:3a8c:273b::/48 which is distributed ...
Livy's user avatar
  • 433
0 votes
1 answer
30 views

replace analog phone with VoIP door box over 2-wire Ethernet?

Large office buildings and warehouses use analog phones at remote access points beyond the reach limit of 2-pair Ethernet. The newer 2-wire Ethernet has much greater reach and can provide PoE to the ...
konsultor's user avatar
0 votes
1 answer
23 views

Connectivity between MOXA and S20 Reason

I want to connect MOXA SWITCH ED510E with MOXA SFP-1GLXLC-T 1310nm to S20 Reason Managed switch with SFP AXCEN AXFD-1314-0w23 1310nm but when I connected both there is no communication also on MOXA ...
Wissam .K's user avatar
0 votes
1 answer
35 views

leaf switches and STP issue

I have a situation where I need to connect leaf switches in the following manner. why we are doing this? we are connecting two different sites,kind of a cross site connection. The red cross mark is ...
rid3332's user avatar
0 votes
0 answers
13 views

can DHCP server Detect type of windows? [duplicate]

I have a DHCP server and several clients, some running Windows 10 and some Windows 7. I want the DHCP server to be able to identify the Windows version of the clients using the vendor class and assign ...
javad basirat's user avatar
0 votes
1 answer
18 views

Using HP ProCurve 1810G - 24 GE as ONT

We will get fiber internet and now I am wondering if I really need the ONT-Modem. My Idea would be connect the fiber to the Switch and then forward it to the WAN Port of the router. Is this possible? ...
JokerGermany's user avatar
1 vote
1 answer
60 views

RSTP Loop Limitations

Recently ,i joined a new company and they assigned me to a under progress site actually it was a hotel with two 12 storey building merged as a single 12 storey building.They have done cabling as per ...
Sjn1238 's user avatar
1 vote
1 answer
72 views

What happens to ARP replies if a switch connects to a router directly over one interface and indirectly over another?

Very typical topology: R1 --- R2 | X | SW1 - SW2 | | H1 H2 (The X represents SW1 connecting to R2 and SW2 to R1) Switches 1 and 2 both connect to R1 and R2 (e.g. for FHRP). When H1 ...
Will1v's user avatar
  • 25
0 votes
0 answers
17 views

Resetting brocade vdx 6720 password to default without boot password

I want to reset a Brocade VDX 6720-24 switch that i got from ebay to default settings. It has a boot password. Extreme networks can not help with the recovery string because it is past end of life. Is ...
Samuel Ngoda's user avatar
0 votes
1 answer
51 views

How can 802.11be avoid the Shannon-Hartley theorem?

I read that 802.11be is expected to have a max speed of 40,000Mbps, but only a bandwidth of 320MHz. How is that possible? My (new) understanding of the Shannon-Hartley theorem says this would ...
Erhannis's user avatar
  • 103

15 30 50 per page
1
2 3 4 5
336