0
votes
0answers
22 views

No ethernet link with certain combination of devices and cables [migrated]

I have a problem that seems odd to me. I have a small patch panel in my home which is wired to various outlets. Until recently, I was running my router (an Asus RT-N66U) near the panel but am now ...
-1
votes
1answer
37 views

What is the difference between an accelerated LAN port and a regular non-accelerated port? [closed]

Can someone explain the difference for me? Wondering more about the difference for the end user, but a technical description would also be helpful.
2
votes
1answer
97 views

How to install and run Puppet Device in order to configure Cisco Switches and Routers?

According to this documentation it should be possible to configure a Cisco Switch by using the Puppet Module Device. Where could this module be found? Is this module restricted to Puppet ...
0
votes
0answers
68 views

Communicate between Voice and Data VLAN

I have a network of computers, on which I also have an Avaya IP Office phone system with several IP phones. Currently the IP phones are on their own IP subnet range, but I want to create a separate ...
0
votes
0answers
61 views

Can a 100Mbit switch throttle the internet connection?

We have a rather peculiar problem with internet speed in our office. Recently, we switched to a fiber-optic connection. We're supposed to have a 100Mbit connection (up and down). Here's how it has ...
0
votes
1answer
52 views

Connect Multiple Networks Wirelessly [closed]

I have a home network using a router to connect computers both wirelessly and with network cables. I also have another separate network about 10m away from my home network that is networked via ...
-1
votes
1answer
36 views

Router connect same 2 ports? [closed]

What it will happen if 'accidentally' i will connect 2 ports with the same utp cable? I'm asking here since i don't find anyware such a stupid and silly question but i'm curios about it, the router ...
0
votes
5answers
139 views

Giving an IP address outside the network to the router to safely make it a switch?

In our office, all machines use IP address 192.168.0.x with subnet mask 255.255.255.0, the network setup is as below: We only had routerA before. But since its wireless signal is too weak (much ...
5
votes
3answers
799 views

Can internet gateways be plugged straight into a layer 2 switch?

tl;dr Internet gateways (eg., cable modems, fiber optic gateways) don't function properly when they aren't behind a device with "layer 3" or routing capabilities, correct? Incredibly long backstory ...
0
votes
1answer
60 views

Can a home router separate private network? [closed]

I've just come across this network diagram: http://computer.howstuffworks.com/router1.htm And I am thinking if it can be done with a typical home router. Normally for home router, when we plug a ...
2
votes
2answers
121 views

Colocation, Full Rack, Layer2/Layer3 Clarification

We are moving from several 1U servers colo'ed out across several data centers to a full rack in a nearby data center for both physical access reasons, as well as having space for expansion. We also ...
0
votes
2answers
60 views

Commercial Routers with internal switch [closed]

I often confuse "commercial" routers (which include switching, dhcp, firewall, etc. functionality) with "academic" routers (strictly layer 3). My question can be summed up in the following image: ...
1
vote
0answers
41 views

Juniper 802.3ad Link between Switch and Router 3x link issue

We have a live 20Gbps link between our switch and router and we are trying to add another 10Gbps link to the LAG, we've changed all the settings on both end to add the third interface to the LAG yet ...
-2
votes
1answer
24 views

Uninstalled server 2008 now router won't handle DHCP

My set up is this. server behind router, router has a server and switch connected to it with multiple computers. router used to serve DHCP and DNS, a couple of days ago installed AD, DNS and DHCP on ...
0
votes
3answers
64 views

Need to add a 3rd switch to dual network structure (2 routers & 2 switches)

We currently have 2 networks utilising the same 2 switches (so a computer attached to either switch can connect to either network), and we need to add in a 3rd switch but we’re not sure exactly how to ...
5
votes
1answer
114 views

Route traffic directly between nodes in a cluster

I apologize if this is a really dumb question. Objective Ensure that traffic that is meant to go between nodes in a cluster does not (inefficiently) go outside the cluster and then come back in, but ...
2
votes
3answers
705 views

VLANs using one managed switch or link router to unmanaged switches?

I'm the resident IT guy in an office with about 20 workers, amongst 3 separate companies who sublet an office. We are wired with 24 ethernet ports dotted around the offices that all lead to a patch ...
0
votes
0answers
92 views

KVM directly connect to guests without passing router

I have a KVM host running 5 virtual servers. Each virtual server is using a separate bridge interface, like br0, br1, br3... Each virtual server has a own public IP. Now, I would like to be able to ...
-1
votes
1answer
359 views

Routing between Vlans on layer 2 switch and Cisco router [closed]

Hi I'm quite new to networking and need some help with a home configuration... I have an 8 port TP-Link SG3210 layer 2 802.1Q tag capable switch and a Cisco 1801 router. I set up 3 Vlans on the ...
0
votes
1answer
133 views

Samba server connected to WLAN router cannot access Windows machines connected to netgear hub

I have a samba linux server connected to the WLAN router. Also connected to the WLAN router is a netgear hub/switch that is itself connected to the office windows workstations. The problem is that the ...
2
votes
1answer
61 views

May a low DRAM router be a bottleneck for a LAN?

I need to install a LAN that is a hybrid between a star LAN and a cascade LAN. There are two levels (I mean that the maximum number of link to go from the central switch to the most external switch is ...
1
vote
1answer
346 views

Cisco ARP table: determine directly connected devices

I have a Cisco switch and a big list of servers on the network. I need to determine what servers are connected directly to that switch. Will searching for the MAC address of each server in the ...
0
votes
1answer
115 views

Layer 3 Switches and VLAN

We're planning a new networking for the new office and, since I want to manage the three floor with 3 different VLAN Im planning to handle it with a layer 2 switch ( I looked for the cisco 200 series) ...
0
votes
1answer
319 views

Networking: Does slavedisk0 take over for disk0 in the event of a fault?

My bootvar is set to boot up images from disk0. The 6500 series switch has two redundant supervisors. Each supervisor has a PCMCIA card with the exact same IOS images in the 0 slot. The secondary ...
0
votes
1answer
64 views

USB access from switch

Currently, I have a network setup that kind of duct-taped together. I have A.) The wireless DSL modem with four ethernet ports and a USB 2.0 port B.) The wireless router with four ethernet ports and ...
3
votes
3answers
281 views

Having ssh access only, determine if the device is router or a switch (Cisco and Juniper)

There are some Cisco and Juniper devices on our network that I need to make a python script to determine what they are: switches or routers. I have ssh access, so I can show version and parse ...
3
votes
1answer
240 views

Wan access through managed switch

I'm replacing a faulty D-Link unmanaged switch with a ZyXel ES-2024A managed switch. Right now I don't want to do anything fancy, no VLANs or stuff right now, I just want to connect the 2024A to the ...
-4
votes
1answer
152 views

Router vs switch in a LAN [closed]

If I have a LAN and and connect it with a switch, I understand it uses a CAM table to route packets in layer 2 (by saving mac to port relations). So far all good. However, when using a router for a ...
0
votes
1answer
178 views

Cisco redundancy modes

I am using a Cisco 6500 series with an SSO redundancy configuration. The show redundancy output is as follows: Hardware Mode = Duplex Configured Redundancy Mode = sso Operating ...
1
vote
1answer
94 views

Combo ports and SFP

I have Netgear GSM7324s prosafe switch. Switch has 24x1G ports. 4 ports are labeled as combo ports while 2 are labeled as SFP ports. I connected 2 PCs (each having 1gig and 10Gig NICs), with the ...
2
votes
1answer
606 views

How to properly isolate computers from other LAN computers?

I have a network set up as shown in the diagram below: Internet --> Router --> Managed Switch 1 --> Switch -> C1 and C2 | |--> Multiple PCs ...
0
votes
1answer
101 views

webserver behind router or switch, multiple IPs available

We are getting a new internet connection 100Mbps UP/DOWN and 4 Static IPs. Also on that connection there will be a webserver that hosts some websites for us. (Nothing too fancy). The problem where ...
2
votes
2answers
665 views

Layer 3 switch routing

I need help moving over to using our layer 3 switch as the inter vlan routing device rather than our cisco router. I've mostly got it working but I've got stuck near the end and need some advice (I ...
2
votes
1answer
2k views

Cisco 2811 router ignored input errors

I've got a Cisco 2811 (AdvIPServices 12.4(25e)) that is showing input errors on both its interfaces, all the errors are of the ignored type. The counter for ignore errors is not increasing ...
0
votes
2answers
2k views

Are both IP address and default gateway needed on a switch to enable communication between different vlans?

I know that a router is necessary for VLANs to communicate with each othe, but I would like to know if both IP address and default gateway need to be configured on the switch in order for different ...
0
votes
1answer
307 views

ARP Connectivity on cisco small LAN

I feel so lame to have this doubt, so there is the question : Why do I not have connectivity ? The case is simple, I have configured the topology and have connectivity between each PC and respective ...
0
votes
1answer
529 views

Backing up Initial and Running configurations for Nortel Baystack 325-24G

I recently came across a Nortel Baystack 325-24G switch. This is the first time I've come across a Nortel device of any sort, so I am a little intimidated. My problem is that I have been trying to get ...
4
votes
2answers
6k views

How to prevent or block other DHCP servers?

Is it possible in a managed switch such as a 3com 4500 or a HP Baseline PWR-Plus type switch to block DHCP from being served through specific ports, or all except 1 port? I have a DHCP server for ...
0
votes
2answers
2k views

How to enable ssh on extreme summit x450e-24p and x450e-48p switch?

How do you enable ssh on extreme summit x450e-48p and x450e-48p switch for secure login. Do I need to purchase a license for that? I haven't found any commands on switch cli.
0
votes
2answers
519 views

Cisco Switch connected to 2 routers

I have following setup: The router on the left is a router on a stick to route traffic within the LAN that has different VLANS. The left switch is the root switch for our LAN and works as the VTP ...
-1
votes
1answer
221 views

What type of rack is used to host Netgear and cisco routers and switches? [closed]

I'm a Masters student doing a project on how to design and deploy networks in an industry environment. Theoretically, I have 6 Netgear ProSafe fs750 switches and a Cisco 3750 24T-S switch and want to ...
4
votes
1answer
936 views

How do I reset this switch so I can use it?

I bought a used 24 port Enterasys VH-2402S fast Ethernet switch at a government surplus warehouse for use at a small private school. After researching, I found that it is a level 2 and level 3 ...
0
votes
1answer
445 views

Can VRRP be used between 2 interfaces on the same node instead of between 2 nodes?

I have two 3750's joined together with a stackwise cable. I have a connection between one of the 3750's physical port and a gateway router. Last week one of the 3750's failed due to power issues, ...
4
votes
5answers
849 views

Looking for Free Virtual Cisco Lab [closed]

I am looking for a free virtual lab where I can test various Cisco Configurations. I currently work for a company that does not have many Cisco boxes, or routers/switches of any vendor in lab, which ...
1
vote
3answers
84 views

Suggestions on routers that would meet my requirements?

From my ISP I am getting one RJ45 Port from the Modem. One IP adress is advertised by DHCP, but beside that I have an IP range I need to use for servers. On the primary IP adress that is advertised ...
0
votes
1answer
87 views

Will cisco 3750-e switches run the old ipservices ios code?

was wondering about cisco 3750-e switches. Will they run the old ipservices ios code? Or do they only run the univeral image? Thanks
0
votes
1answer
237 views

Router cannot see devices connected to switch

To be honest, I've never had experience with networks, so I thought someone here could help me out. I have a switch connected to a router and then all devices are connected to the switch (it has five ...
3
votes
1answer
936 views

Very slow ssh, snmp, telnet network connections but http, sftp are fast

I have a small network with about 8 linux servers, a Cisco 2600 router, and a Cisco 3500XL switch. The router and switch have been configured and working properly for years. About 6 hours ago the ...
3
votes
2answers
921 views

How network devices affect TTL

When I do a ping, I can see the TTL value for each packet. For every router that I insert in between my computer and the router that connects to the internet, the TTL value goes down by one. However, ...
2
votes
1answer
369 views

Effects of having a rapid ARP flush

So the scenario is we have a web server at our colocation. In front of that web server are two SonicWalls and two L2 non-stacking managed switches. We're trying to find an efficient way to set up ...