All Questions
16,655
questions
0
votes
0
answers
13
views
BGP Timers - behavior when Graceful Restart is longer than Holdtime
I am trying to determine exactly why GR timers are recommended to be less than HOLDTIME timers Per RFC4724:
A suggested default for the Restart Time is a value less than or
equal to the HOLDTIME ...
0
votes
1
answer
61
views
Problem with Configuring Selective DNAT for HTTP Traffic on Fortigate Firewall
I'm currently in the process of setting up a new Fortigate Firewall and have run into an issue while configuring DNAT. From what I understand, this is done through Virtual IPs in Fortigate. My goal is ...
0
votes
0
answers
23
views
Is there a reason to keep the BGP communities received from the uplinks? [closed]
It's a best practice to strip the BGP communities from received prefixes which might have a significance in local administrative domain. What are the reasons to keep the rest of the BGP communities ...
0
votes
0
answers
8
views
Does Junos prefer route with higher localpref even when the next hop of this route is unreachable?
I had a prefix 2001:db3::/64 learned from two different iBGP peers. One of those BGP peers became unreachable, but the BGP session had not yet timed out:
root@e2> show route 2001:db3::5
inet6.0: ...
0
votes
0
answers
14
views
What is generating the /isan/etc/dcos_sshd_config file?
I posted this on the main stack overflow page, but then I remembered that this niche existed. Figured it was worth a cross-post...
During a recent Nessus security scan at work, some of our NX-OS ...
0
votes
1
answer
42
views
Cisco 9300 switch doesn't connect via SSH
I have a couple of switches that are trunked via a LAN cable from another switch. I noticed that these switches sometimes have a hard time to SSH into. I get the error: "Connection timed out"...
0
votes
0
answers
10
views
Connection partially unavailable if connected to modem but works when connected to router [closed]
Trying to get a mystery solved. I am connected thru ethernet cable. Some URLs stop working when the cable is plugged into the modem directly.
For example I can access portal.azure.com but management....
0
votes
0
answers
13
views
How can I create offense in eventlog analyzer? And is there offense rating in it? [closed]
How can I create an offense in eventlog analyzer? And is there an offense rating in it?
0
votes
0
answers
20
views
implement a Voice over Internet Protocol (VOIP) network solution. project topology [closed]
can anyone check up this topology if it right or not based on this :
0
votes
0
answers
5
views
How to connect a Teltonika RUT200 router to a Google Nest Pro router to give devices connected to it internet access? [closed]
I'm currently facing an issue with setting up my home network to provide internet access to devices connected via a Teltonika RUT200 router. My goal is to maintain two separate networks in my home: ...
0
votes
0
answers
15
views
How is the number of sub-networks calculated? [duplicate]
I have lately taking interest in networking so I picked up a book to get acquainted with networking principles. The book I have chosen is that of Glen E. Clarke "CompTIA Network+ ...." which ...
5
votes
3
answers
628
views
Can ARP tables store addresses for other networks?
This is perhaps a weird question, but I'm in a weird situation where I want to route traffic from network A 192.168.1.0/24 to network B 192.168.2.0/24 via 192.168.1.5 (the address of B-router in the A ...
0
votes
0
answers
3
views
Sometimes unable to connect internet from pc vai router [closed]
The STRIX Z270H GAMING PC is connected to the internet via LAN cable through a TP-Link C6 V4 router, but occasionally, the PC fails to connect to the internet despite the LAN cable being connected, ...
0
votes
0
answers
11
views
Can someone pls explain what is border leaf in short? and How BGP peering is associated with it? [closed]
I was trying to run cables from switch a/b for a DNS server connection with border leaf. And I was said if there is no border leaf in the switch , I need to do BGP peering in it
My questions are:
...
0
votes
0
answers
13
views
Docker Swarm DNS fails for service name, but service virtual IP address and task IPs are resolved correctly. How to debug this? [closed]
This question was flagged as not a good fit for StackOverflow as it is networking focused. Please let me know if there is a better place for it than here.
TLDR;
In summary, from within a service ...
0
votes
0
answers
16
views
Why my switchport trunk encapsulation dotlq is not working in CISCO packet tracer? [closed]
-Below this the code that I type in CLI-
Switch>enable
Switch#config T
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#int gig1/0/1
Switch(config-if)#switchport trunk ...
0
votes
0
answers
14
views
Download stop in 5ghz only [closed]
Without the possibility of using a wired connection, I use a Wifi connection via an Intel Wifi 6E 160mhz card (latest Intel driver installed) on Windows 10.
I use an application (latest version) to ...
0
votes
0
answers
14
views
My ping does not go through the router [closed]
As a non networking professional I am trying to figure out an issue. I have a setup as shown in the photo. All the green arrows are IPs I can ping and the Red one's are those I cannot ping. There is ...
15
votes
6
answers
32k
views
How to factory reset IOS-XR?
I want to factory reset IOS-XR. The router used is ASR9000
I'm used to do that easily in IOS doing config-register 0x2102, write erase followed by a reload.
I search on documentation, but found no ...
1
vote
1
answer
39
views
Do two L4 ports perform better than one port?
I have a micro-service HTTP backend, which used Nginx as gateway. I have two domain names for clients: mydomain1.com and mydomain2.com.
client ---> Nginx ---> backend
Now, I must decide which ...
0
votes
0
answers
16
views
Pinging a PC that is reachable via many routers in Cisco Packet Tracer [closed]
I want to ping PC4 from PC1. How can I make the setup so that PC4 will be reachable from PC1, so that I can ping PC4 from PC1.
0
votes
0
answers
4
views
How to configure in IIS, two DNSes for two different Web applications hosted in IIS on the same server [closed]
Details:
Windows Server 2019
IIS version 10.0.17763.1
Application A
DNS aaa.aaa.aaa.com port 443
Application B
DNS bbb.bbb.bbb.com port 8888
Both applications hosted on the same server (same IP) and ...
0
votes
1
answer
570
views
Cisco Nexus vPC Portchannel issues
I'm currently facing a network issue between Cisco Nexus 93108 (9.3.11) on an LACP port-channel configuration.
The replica below help us to reproduce the issue we had (using 4x Nexus 9000v qcow2 image ...
0
votes
0
answers
9
views
Mac address usage for virtual machine [closed]
My question is that mac address of kali machine does not appear on the other devices on same the lan, instead host machine's mac address that kali linux built on appears. For example when I do arp -a ...
0
votes
0
answers
10
views
How to ping a LAN behind a VPN router client from another VPN client? [closed]
I am trying to access my LAN devices over a WireGuard VPS setup. I have 2 WireGuard peers connected to a WireGuard server having a public IP on AWS EC2 running Ubuntu. I am new to WireGuard and also a ...
0
votes
0
answers
7
views
Replacing mPCIe wifi card in laptop [closed]
I have Asus X515EA laptop with Realtek 8821CE wifi mPCIe where wifi is connected to single antenna connector in laptop.
I'd like to replace Realtek mPCIe with Intel mPCIe wifi, however Intel has ...
0
votes
2
answers
57
views
Forward traffic from one WAN port to the other WAN port on the same triple WAN port router
So here's the situation that I have at my workplace (local municipality):
I have received from my ISP a static IP address with a provided gateway, which all works normally when I input it into my ...
0
votes
0
answers
7
views
How to connect a Home computer from another location through Remote Desktop Connection [closed]
I want to remotely connect my machine in another location. Giving an example, I have PC-1 in California with an IPv4 address: 10.124.XX.XX. I want to connect PC-1 from PC-2(machine from another ...
0
votes
1
answer
146
views
How to configure IDr on Cisco ASA for AWS IPsec tunnels
I am currently facing an issue while attempting to establish IPsec tunnels between AWS and a Cisco ASA firewall. The AWS tunnel logs indicate that the Identity Resolution checks are failing, ...
0
votes
2
answers
652
views
PVLAN on juniper- native isolated VLAN & trunk
I'm trying to use PVLAN to isolate devices (servers) on a L2 network from each other. However, these devices are currently sit on trunk ports, because they have VLAN-aware IPMI interfaces.
My config ...
0
votes
0
answers
14
views
Cisco 93180LC nxos 10.2 license question [duplicate]
We have a pair of cisco n9k-c93180lc-ex with nxos 9.3.13 and we want to upgrade them to nxos 10.2. it seems cisco changed the licensing model in nxos 10.2 to smart and we should connect to internet, i ...
0
votes
1
answer
46
views
Cisco 93180LC licensing question
We have two cisco n9k-c93180lc-ex and we enabled bgp and pbr feature and it showed the following error
%LICMGR-2-LOG_LIC_MISSING_WARNING: A feature that requires LAN_ENTERPRISE_SERVICES_PKG license is ...
0
votes
1
answer
355
views
High RX Pause Frame on Cisco 2960X
I have a Ruckus R310 that connected to Cisco 2960X and I saw a high RX pause frame.
show flowcontrol interface gi1/0/1
Port Send FlowControl Receive FlowControl RxPause TxPause
...
1
vote
1
answer
52
views
iBGP exchange all routes?
1.1.1.0/24 1.1.1.0/24
[community 100:1] [community: 200:1]
[as path 100 300 500] [as path 200 500]
eBGP peer (AS100) eBGP peer (AS200)
\ /
\ ...
0
votes
0
answers
12
views
Strange TLS and duplex behavior [closed]
I have an application that runs very slowly at 1 Gbps full duplex and fast at 100 Mbps half duplex. I did a trace and noticed that the when the application is running with 1 Gpbs, full duplex, it ...
1
vote
2
answers
77
views
Can TCP seq number increment after sending a FIN?
I have an embedded device connecting to a server (on AWS Application ELB if that matters). Both the server and the client are instructed to close the connection after one request. I noticed that the ...
0
votes
0
answers
15
views
Client sends immediatly TCP RST after Client Hello [closed]
I just took a wireshark capture from my Windows laptop using Firefox version 115.9.0esr.
I noticed that when I am opening a website, my laptop would send a Client Hello, immediately followed by a ...
0
votes
0
answers
11
views
SSH connection through tunnel: unable to negotiate [closed]
I am using an SSH tunnel to connect to a device, however the connection is failing and I wonder if there some additional configuration I need to apply at the tunnel creation time.
I am creating the ...
2
votes
1
answer
93
views
Average bits/s report in tshark
Does tshark has an option to report average bit/s statistics of the capture which appear in Wireshark at the end of Statistics > Capture File Properties?
I'm trying to automate a load test and need ...
0
votes
0
answers
10
views
In vmworkstation, NAT local and global interface MAC verification [closed]
[![VM workstation virtual network architecture from whitepaper.][1]][1]
In ARP request, VM vNIC adapter has sender MAC address 00:XX:XX:XX:XX:bb. The IP address of receiver NAT device is 192.168.237.2....
1
vote
1
answer
53
views
Cisco BGP RTBH in EVPN fabric
I have Cisco basic EVPN fabric configuration in DC with two spine and couple of leafs using OSFP+iBGP for underlay fabric. My border leaf connected to my ISP using Vrf CUST. I want to configure RTBH ...
0
votes
0
answers
13
views
How to ping/connect to a VM on another machine in the same lan? [closed]
I have 2 machines in my cluster, say M1 and M2. I have one machine installed with a VM (brought up by virt-install), say VM on M2.
My M2 can ping the IP address of VM. My M1 and M2 can also ping each ...
0
votes
1
answer
40
views
Cisco nexus C93180YC-EX sflow configuration
I am running cisco nexus C93180YC-EX switch and I would like to enable sflow for collector. I did similar config on 9396PX model and it works but Nexus 93180 is little different. I am running NXOS 9.3....
0
votes
0
answers
57
views
Accessing external server through Azure VPN with NAT
I have three sites and an external server (10.13.16.5) that are connecting to Azure via IPsec tunnels. I do not control the network at the external service but they have given me an address block of ...
0
votes
1
answer
34
views
DSCP and Policy Based Routing: Good style? [closed]
Problem:
All of this happens within one organization
We have a few client boxes that originate connections (for example TCP). Some of those need to be handled differently in routing, because of ...
0
votes
0
answers
12
views
Test Environment [closed]
I am working on building a test environment and need some guidance as the team wants for it to be separate and not able to talk to the production environment. Here are some of the technologies that we ...
0
votes
0
answers
18
views
Cisco N9K-93180LC-EX port configurations [duplicate]
i have two n9k-93180LC-EX in my stock and i need 10x 40G and 8x 100G QSFP28 ports, i want to configure them as VPC and configure them as 18x 40G/100G/QSFP28,
in the cisco website said it supports up ...
0
votes
2
answers
1k
views
UDP fragmented packets not reassembled
I have been working with a device that sends me UDP packets heavily.
I'm trying to capture those packets in my Linux machine (Ubuntu 22.04.2 LTS) with Python programming language.
But, most of the ...
0
votes
1
answer
41
views
juniper-security answer
[edit firewall filter test ]
term 1 {
from {
source-address {
10.0.0.0/8;
}
}
then {
log;
next term;
}
}
term 2 {
then {
reject ;
}
}
How is traffic, sourced ...
0
votes
0
answers
13
views
Where is 1.1.1.1 really located? [duplicate]
I'm courious how this works:
When ping-ing 1.1.1.1 I get results of roundabout 15 ms, where 1.1.1.1 is located in California, according to iplocation.net.
When ping-ing a random ISP from California I ...