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8 views

Cisco 860 Disconnecting on WAN port every 30 minutes

I'm completely stuck for solution to this issue. My ISP logs show my Cisco 860 router disconnecting and reconnecting every 30 minutes and 18 seconds all day - it's noticable when browsing as the site ...
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0answers
9 views

Implementation of JunOS regular expressions in C# [on hold]

I was wondering if there is any library that can be publicly used and implements Junos regex flavor for as path filters like below https://www.juniper.net/documentation/en_US/junos/topics/usage-...
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8 views

Cisco SMB Switch Configuration for VOICE VLAN and DATA

I am hoping to get some assistance with a current issue I am facing at the moment... I have 3 Cisco SMB Switches, (2) SG300 Managed Switches and (1) Unmanaged Switch. SWSG1 | 172.16.1.100 | Port 24 ...
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5 views

Some pfBlockerNG feeds do not work but others do [on hold]

However, when I add feeds for firehol and binarydefense to my pfBlockerNG it says that there aren’t any domains listed. I have other feeds that work fine including EasyList. When pfBlocker does an ...
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15 views

Dell N-Series SNMP, resolve mac adress from interface list

I can easily pull the interface list status, by doing a OID walk. This is how I can tell whether a port is online or offline. To physically resolve the location I then walk. (1.3.6.1.2.1.2.2.1.2) ...
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6 views

Configure Cisco 3560X switch with all ports interconnected, for dummies [on hold]

We are a factory producing PoE devices, but not really using them. Years ago some people with networking qualifications bought this Cisco 3560X switch and tested our first version of products. Today ...
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vote
1answer
71 views

Migrating Configuration - 3750G to 3750X

What is the best practices to migrate configuration from an older Cisco switch model to a newer Cisco switch model? -I am not expecting to change any configuration, just simply want to be on the ...
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0answers
25 views

OSPF type-5 LSAs for routes without gateway [on hold]

Suppose I have a few Linux/Bird "routers" running OSPFv2 over GRE, and one of them has a tun interface created by OpenVPN. Since 'tun' interfaces are layer-3, from the kernel's point of view these ...
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1answer
30 views

10G NIC Dual port - Will I get ~10G throughput on both ports simultaneously [on hold]

I have a dual port 10G NIC. I need to know if it is possible to get ~10G throughput in both the ports simultaneously? If yes, how can I test it out? If no, then will both port have ~5G thoughput ...
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0answers
30 views

Why can ping.exe get the IP of a domain with no responding? [migrated]

When I use cmd to ping a domain like: > ping apple.com Pinging apple.com [17.142.160.59] with 32 bytes of data: Request timed out. I did't get the response, but I get the IP of it. Why can I ...
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1answer
26 views

In IP6 fe80::8a10:8fff:feb7:1632 > ff02::2: ICMP6, router solicitation , length 16

When I use command to capture the packages of interface ae52.0 in my EX4300 gateway Switch (L3): run monitor traffic interface ae52.0 I get many In IP6 fe80::8a10:8fff:feb7:1632 > ff02::2: ...
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11 views

What input misconfigurations exist in switch or router in Software Defined Network (SDN) based environment? [on hold]

I am looking for input misconfigurations that exist in switch /router in SDN based platform.
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0answers
20 views

What are the differences between the Optical Carrier (OC) and Synchronous Transport Mode (STM) protocols, in regards to SONET/SDH?

I understand that OC-3c and STM-1 are technically consistent, and STM-1 can transport different quantities of CEPT-N signals, but why not just use OC-3c and forget STM altogether? Edit: Originally ...
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2answers
25 views

Why do all leaf nodes in an E-Tree service belong in the same subnet?

I'm studying the CCNA R&S at the moment and I'm a bit confused about why E-Tree services require all leaf nodes to belong in the same subnet, despite the leaves only being able to send layer 2 ...
0
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1answer
34 views

why do I need the network name between two routers for RIP routing?

the network in my exercise I am learning about networks and I just started to learn about dynamic routing(like RIP) but there is something I didn't managed to understand and is why do I need in the "...
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0answers
12 views

occasional loss of internet [on hold]

I have been trying to troubleshoot an issue with my home internet dropping occasionally over the past few months. I recently replaced both my router and my modem so I doubt there is hardware failure ...
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0answers
14 views

Will my router act as a DNS server? [on hold]

I tracerouted both my router's IP as well as my DNS server's IP even though they had different IP, I got the same results.
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2answers
45 views

Meaningless bits in CIDR notation

Is specifying meaningless bits valid syntax in CIDR notation? For instance, the netmask of 192.168.13.0/16 is 255.255.0.0. In this case, the last two octets (00001101 00000000) are meaningless because ...
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0answers
28 views

Cisco 1841 stuck on boot?

I found an old Cisco 1841 router and decided to boot it up to play with it a little. Everything seemed to be going ok but I guess something interrupted the boot. Last line is %SYS-6-...
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0answers
17 views

MDNS response “storm” with “localhost_prl: 127.0.0.1” [on hold]

We are experiencing occasional performance problems in our WIFI. With Wireshark I see a high number (currently 50/s) of MDNS responses for localhost_prl:127.0.0.1. I don't think that this is normal. ...
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0answers
20 views

How to determine root-cause of network latency and disconnections [on hold]

I am connected to internet through ADSL. It happens frequently that i see very sharp latency in internet speed and even sometimes i am not able to browse. When calling the ISP they confirm they do not ...
0
votes
1answer
16 views

Why does yealink ip phone is not getting ip address from voice vlan?

I have configured separate vlan for voip and connected interface to it (as shown below). But the phone is not getting ip address automatically. switch- cisco 2960-x phone- yealink I had tried: (on ...
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0answers
29 views

Restrict access from others [on hold]

Currently, I join into a house-group, that contained many users. I am provided a network cable that I can't know/change any settings. The diagram is as the attachment. The questions is : May I ...
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1answer
27 views

the use cases of network function virtualization infrastructure?

I did some search about this question but couldn't clarify. according to this post, I guess the NFVi can be used to run the virtual machine of switch, router, firewall, load-balancer and more for ...
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1answer
20 views

ping works but tracert reaches the max hop [on hold]

I have 4 guests in my VMware host, all of them work as expected; but if I use tracert to find out the route they take to reach the external site, all of them will reach the max 30 hops after the first ...
2
votes
1answer
160 views

How are packets handled and prioritized over a link with multiple VLANS?

So, the question is this. I have a Cisco router with multiple VLANS assigned to a single Gigabit port. 100,200,300, etc. as well as the normal connection without any vlan tagging. Now, everything ...
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0answers
9 views

DHCP & DNS: Hostname Resolution [on hold]

Just making sure that I understand correctly, When a new node on the network joins the LAN, it sends the DHCP server its hostname, and after the DHCP server acknowledges the requested hostname, the ...
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0answers
10 views

How does track packet movement on the internet? [on hold]

Just wondering how do website analysis tools track the path through which the packet is moving in the internet? I understand that internet to accomplish that, one needs to know the routers that are ...
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0answers
17 views

Reset SNMP process on Cisco WLC

Is there any way to reset/restart the SNMP process on a Cisco WLC? Just like for instance you can do it on Juniper switches from the cli (or on Cisco switches and routers for that matter as well, just ...
1
vote
1answer
37 views

Cisco 3750G - SSH Diffie Hellman Group 1 SHA1 Error

I recently implemented SSH configuration on my 3750G switch stack. I have -set the domain name -generated the rsa key using 2048 bits -ensured that the vty lines are set to transport input ssh Now ...
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2answers
53 views

SFP modules and LC-to-LC patch panels?

Simply put, we are joining two sites that are 200m apart using 8 core OM4 Multimode fibre cable. Am I correct in understanding that lc patch panels on either end of the fibre cable are ok and that ...
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0answers
21 views

Why is Prime 3.4 connecting to scan-prd-2007.cisco.com

Our Prime 3.4 Server is trying to connect to scan-prd-2007.cisco.com. Does anybody know what Cisco is doing here? scan-prd-2007.cisco.com (173.37.249.87) TCP/1541
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0answers
13 views

Connect Brocade icx-7450 COM with laptop

I have brocade icx-7450 managed switch and need to configure it with packetfence server. Still I'm not able to connect to the switch. Tried with mini USB to USB, RJ45 and USB male-male cables.
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0answers
20 views

Cisco Prime - Enlarge dashlet

Is there a way to make a part of overview window (dashlet?) in Prime Infrastructure larger? I have Network Topology as a part of the overview and I want to make that window bigger - seeing the network ...
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0answers
17 views

SFP+ Transceiver Compatibility [on hold]

We recently got a tvs-1582tu NAS with 2 SFP+ 10G connections. It will be used for a high throughput application, and copper connections will be enough. SFP+ is a new concept for me, and I see from ...
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0answers
9 views

Software to export switch config & upload to a documentation platform [on hold]

I'm maybe trying to get a little creative here however I've been tasked by my manager to try and find some software that can scan our switches using SNMP and / or SSH and export the running config, ...
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0answers
17 views

Which WiFi 802.11b interference is more destructive? [on hold]

I am curious after using 'WiFi Analyser' App on Android phone. The App shows various AP's that are in the range of your cell phone over the Wireless LAN. It shows APs SS-IDs , their channel number ...
0
votes
1answer
22 views

Windows Domain Controller making ARP requests outside of subnet? [on hold]

I have a Windows Server 2012 R2 box acting as a Domain Controller which is on a segregated LAN. It also acts as the DNS server for this LAN. I also have a Sonicwall NSA 2600 firewall which is set as ...
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0answers
7 views

What is SSH v2 and how data is encrypted between host to host [on hold]

What the role of RSA in SSH version 2 and it works
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votes
0answers
18 views

ACL on a layer 3 router [on hold]

i have 2 vlans,2 routers and 1 HQ server.both my vlans are connected to one router while my HQ server is connected to the other router and the routers are both connected together.So for all my vlans ...
0
votes
0answers
8 views

Connecting win7 with winxp [on hold]

I have a network consisting of multiple computers running different windows versions from xp to 10 the problem is while the other computers running 7 and higher can see read and write on the computers ...
0
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2answers
61 views

Is Spanning Tree Protocol Needed?

If there are two switches connected directly together with two links is spanning tree protocol needed? please see below snippet
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0answers
13 views

Running UDP port 43210 [on hold]

I want to host Bombsquad game windows server. UDP port 43210 is not accesed. I did Settings in Router but still this does not work. I use supernet Infocomm Router.
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votes
0answers
10 views

Bridging two NICs [on hold]

(I know next to nothing about networking, so bear with me.) I have a Linux board with two NICs. One will only be connected to another board, the other will connect to a network. I need to make the ...
0
votes
2answers
29 views

Wifi antenna to detect clients

I would like to know if it is technically possibile to detect and recognize a client (PC/smartphone) during its wifi scan. My goal is to get the list with identifiar like mac address or other unique ...
0
votes
0answers
17 views

Two switches don`t ping [on hold]

I have two switches each configured two vlans vlan2 and vlan3.Vlan2 has port 1 tagged in both switches ip address also in one mask192.168.0.1/24.Vlan3 has port 1 untagged in both switches and ip ...
0
votes
1answer
50 views

Why Internet protocol is divided in rows?

In simple words, why IP packet is divided in rows each one is 32 bit in length? For example this attached image shows the IP packet has 32 bit in the first row then another 32 bit and so on. Is it ...
1
vote
1answer
37 views

Broadcast link vs. point-to-point links

What is the distinction between broadcast links and point-to-point links? In the paragraph below, the author switches between "broadcast link" and "broadcast network" which is causing my confusion..is ...
0
votes
1answer
27 views

VLSM - Two Routers 4 Switches 2 Subnets 1 server

im looking to create two different subnets withing this setup, is that possible? But there are some pcs from switch 1 that are from subnet1 and others pcs from switch 1 that are from subnet 2 so ...
0
votes
0answers
8 views

Can I use sockets to create a chatbot website [closed]

I want to create a Chatbot website that include the structure of distributed system. To be a distributed system, I thought there should be single server and multiple users concurrently accessing my ...

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