Routers

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A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

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Hi Experts,

This week I got a Panasonic ToughBook CF-33 and switched my ISP from Bell to Rogers.

Over Ethernet, using speed-test.net, download with Bell was 300Mbps, with Rogers is 500Mbps.

Over WiFi, the ToughBoook was 80Mbps and now <20Mbps.  On my iPhone, Rogers is getting 300Mbps.

Why is my ToughBook now  under 20Mbps?

One thing that I noticed now is that with Rogers my router is now Hitron CODA-4582U, and the SSID for 2.4GHz and 5GHz can't be the same, where on  Bell (Cisco) they were. The ToughBook now cannot detect the 5GHz SSID. Does the ToughBook CF-33 not support 5GHz?

To make matters even more interesting, my printer only has WiFi interface, which makes it on a different network because of the mismatched SSIDs

As I am typing this I am wondering should I purchase another Cisco router and make the Hitron only as modem?

Any help will be appreciated.
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We have a legacy XP machine  that has custom software that  it uses for data collection of devices. The software upgrade is out of budget so we decided to put a firewall in the mix.

If we have 1 ASA and need to retain the IP address of the legacy XP machine with ports 400, 900, and 950 what would that config look like?
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Hi We need to add a few of APs(3500) to WLC.(5508). I wonder if we need to configure channel number manually in order to avoid Co-Channel Interference? or we just add these APs and then APs can automatically be assigned some best channel ? Thank  you
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I have a computer with two nic's installed.
N1 192.168.0.x 255.255.255.0 ; N2 172.18.135.x 255.255.255.0
I would like to route all outlook email traffic from N1 to N2
I have tried a lot of combination of the following "route" command
all with an invalid parameter error message. I'm using the CMD with
elevated admin.  any help would be appreciated.

ROUTE ADD 192.168.0.11 MASK 255.255.255.0 172.18.135.48 yields invalid param error
ROUTE ADD 192.168.0.11 255.255.255.0 172.18.135.48 yields invalid param error
ROUTE ADD 192.168.0.11 MASK 255.255.255.0 GATEWAY 127.0.0.1 172.18.135.48 yields invalid param error
ROUTE ADD 192.168.0.11 MASK 255.255.255.0 127.0.0.1 172.18.135.48 yields invalid param error
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Have Cisco 1900 serial router a HA function ?
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I have created new 26 vlan in cisco switch. But when i checked spanning tree instance for those vlan i see spanning tree instance only for 4 vlan for rest of vlan i did not see any instance.

Below is the message#

INND-S-D-01-AUS#sh spanning-tree vlan 626

Spanning tree instance(s) for vlan 626 does not exist.
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Dear Experts, we are moving our Data Center in the next 2 months. What should we consider and take note in order to move DC smoothly?

Our environment:
- 4 x Server ESXi6.5 (HP Gen9)
- 2 x Routers Cisco 3925
- 2 x Core Switch Cisco 3750/3560
- 1 x Firewall Sophos XG
- 10 x Access Switch Cisco CE500
- 5 x WAP Cisco Meraki MR18
- 5 x Physical Server IBM x3650

Many thanks!
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I have RV016 routers and the VPN on one of them is going bad.  I am looking at the RV345. I have several questions that no one can answer to my surprise.
Is the VPN compatible between the routers?
What PC client software should I use?  I have PC and MAC clients.

Thanks
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Hey! I have a router problem. On last saturday, i got the new 1000mbit/s internet in my house. My ISP(called Digi, in Hungary .) Gave me a Huawei(Huawei EchoLife HG8242-B,) modem/router(?). I bought on monday a new TP link AC1200. BUt i was experiencing internet drop issues. (it lost connection after 30mins, and keeps doing that in that interval.) So I called my ISP, they came to my house on wednesday, and told that, the problem is in my router. So i took it back to the shop, and bought a new TP link AC1750 V4.0 on Thursday. But the problem still appear, and I've tried everything. Dhcp change, MTU size change, frimware upgrade/downgrade, DNS change but it still drops the connection on WIRED. The problem appears on every WIRED computer, at the same time. Before first my ISP came to my house, the Huawei was in Dinamic IP mode, but my ISP changed that to bridge mode, so now the connection is now, a PPOPE one. Problem still appears, every time, and ISP keep saying, there is no fault at their end. But it'S possible to get 2 wrong router? My ISP will come today too.  SO what should i change  to finally forget this problem?
The strange  thing is , from an old TP link 941N router, everything works fine.
Now, what could be the issue?
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Hell,
I have a mikrotik with pcc load balancing  for 2 wans...
I have some users that is but an access points after the mikrotik and they share internet to others
on the main of mangle I add two rule to block that :
 action forward - change ttl - decrement = 1  
 action prerouting - change ttl - decrement = 1
after I did that on the top on mangle rule the internet sharing issue was resolved  but the problem is with the load balancing rules and the others going to not work or effect !
so what I have to do ?
thanks.
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Hello,

I would like to know what security measures can be implemented at the ISP level for IPVPN Link ?

Is it compulsory to have Firewall at edge level for VPN Links?

Br
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How to configure the business hub router 6 so traffic coming from internet talks to port tcp 443 and udp 161.
I need to port forwarding all inbound  traffic on port tcp 443 and udp 161 so my webserver can access from internet .

Also web server needs all outbound traffic.

Also wi-fi seems works ok for internal users.

is this possible ?
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Hi,

I'm having issues factory resetting a Cisco Air Lap1042N-E-K9 Access point, I have tried all variations of resetting this from the mode button and write default-config have also tried deleting private-multiple-fs but I just comes back again after a reboot I can't seem to do a full reset no matter what I try.
Initially I could not access conf t but I managed to find a command line that allows this but even if I wri mem and issue a reload command this option is not saved, it appears to disregard anything I add after a reboot I'm completely lost :(
I'm not fully conversant in cli/console mode but I can just about get by if someone points me in the right direction as to what I'm doing wrong.
if you need me to upload the config then please let me know.

Thanks
Craig
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Hi,
I am trying to implement the static nat  on cisco router for inbound traffic.

Can anyone explain what is the exact different below two nat rules.
1. ip nat inside source static 10.216.128.14 81.128.XXX.XXX    (When I applied this nat all works ok no inbound and outbound traffic are blocks).

2.
ip nat inside source static udp 10.216.128.14 161 81.128.XXX. XXX 161

ip nat inside source static tcp 10.216.128.14 443 81.128.XXX.XXX 443

I reckon nat rule has allowed me 443 and 161 to be opened only ?

Regards
Nasim
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Hey, we have been having a strange problem with our Quickbooks POS ver 13 multi user installation in a club setup (4 machines). Customers have to recharge their accounts before ordering and the big problem we have is discrepancies between current and available balances. However,the sale transactions are posted in real time but the balances take seem time to synchronize(happens  to a random member account irregularly ) and we have changed the LAN routers and cabling and the problem is still persisting. The charge to account is posted after some delays of a few hours. We have integrated the solution to Quickbooks premier for financial exchange. Our company file is 500MB big and the connectivity tool doesn't post any errors. The environment is available for remote access any time. Any pointers?
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My internet at office was blocked from using utorrent by mikrotik Router, and i can't access any Utorrent site. Is there anyway i still can use Utorrent? (Microsoft Window 10)

Thanks in advance.
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I have 4 locations that are utilizing gateway to gateway connections. 3 locations have the Cisco RV325 Wan VPN Routers and one has an ASA. Under the VPN Summary tab the 3 VPN connections were all connected at one time and recently the status went to waiting for connection. Nothing has changed that could have caused this that im aware of. I tried switching them all to aggressive mode and back but it still goes back to "Waiting to connect".

There are 4 sites, Office 1, Office 2, Office 3, and Office 4.

All of the offices are connected to each other except office 2. Office 2 is waiting connection to all of them.

I've compared the settings side by side and they are all the same.
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I have Linksys E900 router, Can I define QOS for Lan Connection only for my laptop connected for wired connection..
I need to have a High priority for Laptop. is it can be done?

I see the options only Wi-Fi Multimedia (WMM) Support
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Hi,
As I am new to Cisco UC, I have the following design question which I would like to ask on what is required for it to work. There is an existing Cisco Call manager in HQ at Country A.

a. There is a requirement to setup a branch office in country B.
B. There is a secure vpn connection from the branch office in country B to country A
C. When call are initiated from the ip phones in country B locally, it should be called locally and not via country A call manager to avoid overseas call charges
D. When call are initiated from the ip phones in Country B for country A; it should be via country A local call tolls.
E. When call are between the ip phones, it will go via the secure vpn connection.

As I am new to Cisco UC, I would like to ask, is CME required for the router at the branch office or UC license would be sufficient? May I also ask on how this is done/design?

Any suggestions is greatly appreciated
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Hello Experts,

Unable to start Traffic Monitoring on Cisco Configuration Professional, once i am trying to start interface collector service & ccp netflow collector service I got message database server used by collector service is stopped.

Please see attached logs.
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Hi guys,
It’s just a general question.

I got a client who has 2011SBS server and few computers.
Got DSR dlink 1000n router.

Right now no rules are configured in this router.
In past few days I found few suspicious activities happening in their server. The admin account is getting locked out after many incorrect login attempts. I changed the admin name and it’s all sorted now. But I want to know, how to protect it from router level ?

Generally how to protect a internal network from outside ? Any specific incoming rules should I put in dlink router ? Like blocking this port always or any generic rule which will suit all environments ??

Thanks.
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hi...
I have server core 2019 (core 2016 is ok to. all the commands i have tried from server core 2016, work on 2019). This is a test box away from the production servers.
all firewalls are down for the purposes of this test. i have ad ds running/installed
test-dnsserver comes back as success, but the round trip takes about 10-11 seconds.
ping. allowed icmp and everything pings accept the router (192.168.1.254)
get-netconnectionprofile. changed it from public to private networkcategory. Shouldn't this be domain authentication?.
nslookup. default server unknown, address ::1. Is this to do ipv6 not being found in dns?. the name for this is "network". should this be different, say, to domain name instead of network?
lets get the ping for the router out of the way first.
That's enough questions for now, thank you for any help you can offer, Simon
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I am researching and testing migrating to SNMPv3 from SNMPv2c on Cisco networking equipment. We are a small company (Approx. 30 routers and switches) and we monitor the network using SolarWinds NPM and have had no problems getting event notifications when gear bounces or monitored interfaces bounce.  Based on that alone I am thinking that what we have configured generates adequate information/notifications so that all that has to be done to migrate is peel off the SNMPv2c config and add SNMPv3 config.

My question is two fold.  Is my train of thought accurate? Secondly, if I specify OID(s) and or specific traps to be generated  will the only notifications we receive be the ones specified?



Current SNMPv2c config:
snmp-server community xxxxx RW
snmp-server location yyyyy
snmp-server contact zzzzz@iii.com
snmp-server chassis-id somerouter
snmp-server host x.x.x.x version 2c xxxxx


Proposed Config:
snmp-server group xxx v3 priv
snmp-server user someuser xxx v3 auth sha ooooo priv des ppppp
snmp-server location xyxyxyxyx
snmp-server contact zzzzz@iii.com
snmp-server chassis-id xxxxx
snmp-server host x.x.x.x version 3 priv xtrewq
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Can you recommend an ISP for our small remote Sales office at New York City? We need 10-20M bandwidth with a backup line. The ideal ISP can provide a separate backup line -- meaning once the main line is failed the WAN connection would switch straight over to this backup line. And the backup line is included in the cost of main line.
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My goal is to be able to connect to private network located behind OpenVPN client (192.168.1.0/24) via OpenVPN server WAN interface.
For example I want this forwarding: http://{Ubuntu WAN IP}:443 -->  http://{Private LAN IP behind OpenVPN client }:443
Please take a look at the attached screenshot.
-  Ubuntu VPS knows the route to private LAN subnet that is behind OpenVPN client (192.168.1.0/24) and MikroTik router knows the route to OpenVPN subnet (192.168.7.0/24).
- I can connect to Ubuntu VPS via SSH and successfully ping MicroTik OpenVPN interface (192.168.7.2) and also I can ping any host from MicroTik private LAN subnet that is behind OpenVPN client (192.168.1.0/24) , needless to say the private LAN hosts that are behind OpenVPN client (from 192.168.1.0/24 subnet) can easily ping Ubuntu OpenVPN interface (192.168.7.1) too.
- Also any host from OpenVPN subnet (192.168.7.0/24) if connected to OpenVPN server via OpenVPN client allows communication like http://{Ubuntu WAN IP}:443 --> http://{Private IP of OpenVPN client}:443 using UFW NAT rule.
But:
When I’m trying http://{Ubuntu WAN IP}:443 --> http://{Private LAN IP behind OpenVPN client}:443 I have following behavior:
1)      Packets successfully arrive to host behind OpenVPN client (to any host from 192.168.1.0/24 )
2)      But the host of this subnet can't route back this received public IP packet via OpenVPN tunnel, it replies using ISP WAN address.

I would very happy if someone is able to help me solve this …
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Routers

47K

Solutions

30K

Contributors

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.