Implementing / Planning / Building A LAN
Mar 25, 2012
I have to propose/design a network system. It has 350 computer terminals/workstations out of which 300 of them are divided into two separate networks while the other 50 are to be on another network. So I assume I'd need 3 networks (or LANs) I guess (all connected ofcourse)So far I've inferred it needs a mail server, a file server, a print server, a DHCP server to assign IP addresses (C class and private ones ofcourse) and a web proxy server. Also I thought a fast Ethernet LAN network might be ideal here but I'm not quite sure on that (nor have I ascertained what sort of topology or hardware to use).
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Sep 18, 2012
I have a fresh piece of 7606-S router, i am planning to install a new IOS ( 15.2.4S or 12.2.33-SRD8 ) SIP-200 / RSP720 moduls ... would ypu plese provides me a configuration guide for installing IOS for 7600 serise router.I have the image on TFTP server.
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Apr 26, 2013
We have WCS running 7.0.164.3...We had upgraded WLSE to WCS a few years back.
I am planning to upgrade WCS to 7.0.240.0... What is the procedure of upgrading WCS in this case? I am not quite sure about the procedure as our WCS was a WLSE before.
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Jun 26, 2011
I designing a new network for the company.
-Core layer is Cat6509 with VSS
-FW Lauer: Cisco ASA 5540
-Switches: L2 Cisco 2960
What is the best plan to make this redundant to the Firewalls?
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Mar 21, 2011
I planning to integrate cisco asa5505 device in runing enviornment for filter ip traffic.Internet ----router----ciscoasa----lan.Ip series is public(25.263.25.0/24) througout of network (no privateIP)now how do I set asa in such case and filter traffic from comming into lan and going out to internet.
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Mar 4, 2011
I am planning to install and configure VSS (6509) switches. But the customer requires that the First Switch should be the main and the second Switch should act as a backup one. (Disaster Recovery).
Once the Main (Primary switch) DOWN the Secondary one should coming UP.But what I am understand in VSS concept the two switches will act as one Switch. And both of them will be UP in the same time.
Is there any solution to configure the both VSS switch as primary and standby switch to provide HA?
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Sep 10, 2012
We are currently designing a complete Layer 3 to the edge solution for our customers. The network design is a combination of a collapsed core (Core to access) as well as a three layer model (Core/Distro/Access) for connectivity to the Data Centre, Internet and Wireless Blocks.
The core of the network contains two 6509E switches interconnected on a Layer 3 Port channel (no VSS). Access Layer switches (3750 Stacks) connect to the core switches over p2p routed links (Collapsed core part of the design). Distribution layer switches provide connectivity to the Data centre, Internet and Wireless Blocks.(three layer model.
All IP addressing is being planned for assignment from the private RFC 1918 address block(10.0.0.0/8) for both Infrastructure and Access layer VLANs for users.
Clarifications required for the following:
[code]...
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Jun 5, 2012
The desktop team has asked me to set up multicast in our network with building PC's as they will be deploying a few hundred of them starting in two weeks. We currently do not have multicast set up, and the only experience I have with it was during my certification studies, so I have a lot to catch up on quick. They will be sending the build traffic from a single server. The network environment is simple: a 3750 stack as the router/distribution layer and mainly 3550's as access. The PC's that they will be imaging will be on one VLAN that is already designated for PXE builds. This VLAN is across multiple switches. Is it possible to just enable the multicast features on a single VLAN? I have been reading around but not finding much other that very in-depth Cisco papers.
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Mar 15, 2012
We have backup and other traffic over our vpn which is affecting our ip phone service between two sites. Our consultant suggested implementing QOS over the VPN to give the phone traffic priority. Is this possible with the rvs4000. Is there any good source saying how to do it. Is the setup of the QOS on this router similar to another router where this has been discussed.
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May 22, 2012
I have a problem implementing a NAR for a specific device group. I am running Cisco ACS 4.2 and it works fine for all the other stuff I do but this issue is perplexing me a bit.
I have a device group with Juniper devices in it and I authenticate using RADIUS (Juniper) as the radius setting. I have a Administration user group set up.
I placed a NAR into the group "Per Group Defined Network Access Restrictions" specific to the device group with * for port and address
I placed this group into both the Define IP-Based as well as the Define CLI/DNIS-based section.
No matter what I do I keep getting authenticated.
When I go to the passed authentications page I see my login and the group-name is identified correctly and the network device group is identified correctly too. The filter says "no filters activated". So how can I get this NAR to kick in? I would like to restrict one device group from a ACS user group.
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Jul 24, 2011
I was able to successfully implement MS-PEAP authentication with 5508 WLAN controllers and Cisco ACS v4.2. However, when I integrated 4402 WLC with version code 7.0.116, it did not pass across any authentication requests. Did a debug aaa events enable and there was no output. Configured another SSSID with PSK to test that my controller was OK and aaa debug was working, and there were CLI messages when I associated an AP.
why the 4402 is not working as I have compared configs with the 5508 and there is no difference. The shared secret is configured on both ACS and Controller and CA is downloaded on the ACS.
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Dec 9, 2012
I have a task to compare different approaches to implement InterVLAN routing in campus network. Google suggests only Cisco technologies for such query. But what I need is also other companies solutions (like Dell, HP etc), cost of the implementations, pros and cons.
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Oct 13, 2011
We have customer with implementation ACS5.2 in Windows environment. Now they want to implement IP phones in the network.
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Aug 12, 2012
Existing nework New Network
I have attached some diagram here, 2911 Router configured as a zone based firewall and it works fine. I need to put ASA 5510 as an internal Firewall in to the existing network. So I need to hand-over the NATing configuration from IOS FW to ASA 5510 , are there any special configs here? I have done this but it's not working, If i bypass IOS ZB FW and ASA directly connect to internet Its works fine, If NAT configurations keep in IOS ZB FW then it works fine.
I have attached IOS ZB FW current config file below.
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Feb 15, 2012
I'm attempting to configure Classification and Marking on our access switches using the MQC model. The Switches are 3750's running IPBase Version 12.2(35)SE. For some reason when I activate the policy-map on an interface, no traffic is being tagged, i've used the 3750 QoS configuration examples (url) for reference.
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Oct 12, 2012
I want to implement VoIP on my client network, currently the data network is using SG300-28P small business switches for user access. According to my design the IP Phones (Cisco 9971 and 7942G IP Phones) are to connect to the small business access switches while the user PCs connects to the IP Phones.
My concern is I really don't understand how the small busness switches will advertise the voice VLAN to the IP Phones. I understand that the switches are suppouse to use LLDP/CDP for this but it seems the model I have can only do LLDP. The IP Phones and the PCs connected to them will be recieving IP addresses from an uplink L3 managed switch.
how LLDP works (particularly regarding this scenario)? Does it matter if the small business switch is in L2 or L3 mode for the VoIP implementation?
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Apr 30, 2013
Need to configure Cisco 1142 N access Point togetherwith the Cisco Switch . I have a POE Switch 4510 and Cisco 1142 N Cisco AP . I have one management vlan 5 & User VLAN for WIFI VLAN 10 . The problem is when i make the POE port which is connected to the AP as trunk port means : [code]I am not able to ping the management IP allotted from VLAN 5 . However when i make it as access i am able to ping the managament IP . But for both the VLANs to work it should be in trunk mode & in cisco i can either assign the port as access or trunk .Post this i would configure the 1142 N with Cisco SG300-10P POE Switch . I guess if issue with my 4510 gets resolved the same way i can configure SG300-10P as well .
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Jan 3, 2013
We have two 2100 WLC's that support 12 access points. One has been sitting in a box for some time, but we're at the point where we need to add additional access points that will put us in excess of the 12 limitation. What is the best way to go for installing the second WLC?
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Apr 25, 2012
I have roughly 50 users that are remote, and use VPN to access the resources in my network such as file servers, application servers etc. We currently use Microsoft VPN to authenticate those users. It works, but I am not a fan on Microsoft VPN.
I have purchased an ASA5520 to replace my crappy layer 3 HP core backbone switch, and plan on replacing my Microsoft VPN with Cisco VPN. I want to configure my ASA so my remote users can continue to VPN into my network securely?Is this possible?
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Apr 14, 2013
I am facing problem in implementing NAT on Cisco 8.4 . the scenario is
Inside interface network 10.10.10.0/24 and 10.118.0.0/16 is also routed towards inside network
Other network 192.168.10.0/24 is routed via outside interface.
My requirement is to NAT the 192.168.10.2(real IP) to 10.10.10.2(mapped ip) so that when users from inside network (10.118.0.0/16) will come they will access the 10.10.10.2 instead of the real Ip(192.168.10.2)
So I used nat (inside,Extra net) source static obj-10.118.0.0 obj-10.118.0.0 destination static obj-10.10.10.2 obj-192.168.10.2 but the connection is not working but with show nat I am getting hits on the NAT statement.
cap test Ethernet-type arp interface inside real-time
1: 23:29:05.684199 arp who-has 10.10.10.2 tell 10.10.10.1
2: 23:29:09.687998 arp who-has 10.10.10.2 tell 10.10.10.1
I have also enabled the proxy arp on the inside interface but still the connection was not working.
Packet tracer output
[Code] .........
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Feb 28, 2013
I have a 5520 acting as a VPN server... and 5505's acting as clients.The 5505's connect fine when using "client mode" but things go sideways when I try and use NEM.Namely, they never complete a connection.
debug vpnclient shows this repeating rather fast (this device is connected a Fios connection behind a gateway/router (it's my test environment and it does work when I have the device setup in "vpnclient mode client-mode".
Some of my remote sites are configured directly with a public IP (issued via DHCP) others are behind a 3rd party firewall/device that I have no control over... but again, these sites currently work as "vpnclient mode client-mode". [code]
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May 15, 2011
With IPv6 Coming i've been tasked with implementing M-BGP on our 7200VXR running 12.4.
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Apr 24, 2012
I have in one building a computer which has a real ip using and i want to connect to that building not via teamviewer or bomgar i wish to use VPN, how do i configure it? And why it is better using VPN?
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Sep 30, 2012
After implementing TACACS, one of our routers takes about 8 seconds to response to any CLI command. We have no problems with other devices in the same location with the same AAA configuration. The router is talking to the ACS server (ACS 5.3) and the logs on the ACS server look normal for the router as well.
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Dec 16, 2012
implement VOIP on my router 3825 I have Ip phone 7905G and 7960.
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Oct 29, 2012
I have a ASA 5510 and planning to implement multiple context in a 2 tier security level and vrf-lite. meaning I have 2xASA facing the internet and below that a 2x3560 switch for our extranet and below that is another 2xASA for intranet. See diagram below. In this kind of network I want to know how it would impact the total throughput and resources of the ASA using multiple context?
INTERNET
| |
| |
2811A 2811B
| |
| | (OUTSIDE)
ASA_A-------ASA_B
| | (INSIDE)
| |
3560A---------3560B
| |
| | (INSIDE)
ASA_C--------ASA_D
| |
| | (OUTSIDE)
3560C----------3560B
| |
INTERNAL NETWORK
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May 2, 2011
i have the following scenario that i'm requesting you guys verify if it will work.I have a 3550 catalyst switch running EMI and an auotomous 1131AG aironet ap, i have two dhcp pools already setup on the switch one for the LAN and the other for the wireless clients.There are two vlans on both the switch and ap for LAN and wireless clients.I have already setup multiple SSID's to be broadcasted from the AP, is there a way i can bind one SSID to the lan dhcp pool and the other to the wireless clients dhcp pool?
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Oct 2, 2011
I have a major problem regarding implementing IP Multicast in an ADSL network. The diagram of our network is attached. In every Access Network , there is only IP DSLAMs which are connected via Metro ethernet links ( L2 links) to the main site. So there is no Router or Layer 3 Link to the main site. In the main site there is an Aggregator router which is an PPPOE server which terminates subscriber's PPPOE sessions. All the Access networks and subscribers are just connected to one Aggregator and they use that one as PPPOE server. It is an Cisco 3845 Router. Then the Aggregator is connected to Core network and behind the Core network is an Streaming server which streams in Multicast. IP Multicast Routing is configured in Spars-Dense mode in all routers in Core network and also the Aggregator and it is working properly. So the sucscribers are able to join the multicast stream and the very last router in the path toward the subscribers( which is the Aggregator) does the Multicast replications.
There are two problems we faced:
1- Since all the subscribers from different Access Network use the same Aggregator in the central site as PPPOE Server, all the connection are terminated on that router. The goal is to use the uplink bandwidth of the Access networks to the central site more efficiently and if e.g 20 subscribers watches the same channel, it just consumes as the amount of one channel due to doing IP Multicast.Now the problem is that when for example 2 subscribers of the same Access Network (in the same POP site) connect to the same stream, the amount of bandwidth used between the central site and the Access network is double. It happens because the aggregator activates IGMP on every virtual-access lines for every PPPOE subscribers who wants to joint the stream. So it can not recognized these two subscribers are from the same Access network. Therefore, the result is that although it is doing Multicast, it does not save the bandwidth because it activates IGMP group on every subscriber's virtual access line for his PPPOE connection. So is there any solution to this problem? Something came to my mind that we need to implement a separate aggregator for every Access network which means that we have to place a router for every access site and it will be expensive for us. But I think in that case every local aggregator can do IP Multicat routing and it saves the bandwidth definitely. Any better solution that may solve our problem using the same topology?
2- Another problem is that when the subscriber's CPE are configured in bridge mode and subscribers set-up a PPPOE connection on their PCs, they are able to join the multicast stream properly. But when they put their CPE in router mode and have their ADSL modems as PPPOE client, they are not able to join the Multicast stream. i.e the ADSL modem is doing NAT and routing and it connects to PPPOE server using username/password credentials. I also tried a feature in ADSL modems called "IGMP support" when I wanted to create the WAN settings. But it did not work. I am not sure but I think that we need "IGMP Proxy" feature on subscriber's CPE.
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Jun 30, 2011
I am trying to develop a firewall from scratch in linux environment using C. Actually its more of a Unified Threat Management sysytem .which features to include like antispam, content filtering, vulnerability analyzing,etc.I have exactly 1 year to complete this project which features can be coded completely in time. Actually I have broken the process of development in 4 stages namely :
1. Capture the packet (using libcap)
2. Break the packet into headers and data (using libpcap)
3. Analyze the headers and data and make a decision
4. ACCEPT or DROP the packet
Its the third step that will depend on the features which are included in the project. I plan to code using the UNIX Socket API.
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Jan 16, 2013
Alright, so I have a Dell xps 12 running windows 8.On my school's campus, there are two wifi options. One is secure with a login, the other is unsecured but with a Web login. Normally I connect to the secure one and have no problem.
However, in one building I've encountered issues connecting. My computer will pick up the signal for both options (and says there is strong signal) , then try to connect to the secure one. It will say "connection is taking longer than usual" and then fail to connect, then say no networks available. I tried resetting the network adapters and it picks up the signal again for a moment, try to connect, and then same problem again.
I can see other people in the room connected to the Internet with no issue. My phone also connects with no problems, and has full signal. I have no idea why my computer won't connect.
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Mar 25, 2013
I have a 4g home system from verizon in my house with a wireless roughter all works. Are printers are on the network. I have run a cat5 underground eithernet cable to a poll barn that is about 200 feet from my house. (the house network will not reach that far). My wife wants her barn to be wi fi (she does not want to plug in to the wall of the barn. I was told I need a Hub. but i am not sure what i need.The idea is she could print to the printer in the house or in the barn so i want all to be on one network.
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May 10, 2012
This lab teaches the application performance of two different networkarchitectures: Daisy Chain and Collapsed Backbone Network. The bookshows a collapsed backbone data network in which there is a core switch inthe basement equipment room. The core switch is linked directly to aworkgroup switch on each floor. Another option is to link the switches in adaisy chain. In this approach, the basement core switch is linked directly tothe first floor switch, the first floor switch is linked directly to the second floorswitch, and so forth.This lab shows the application latency introduced by connecting buildingswitches in different ways.
OverviewOperations building has 10 floors, each havingmany users connected to a 10Base-T workgroup switch in the telecommunications closet. The users share an Oracle server and seven fileand print servers in the basement.In Scenario 1, the switches on each floor are daisy chained to the core switchin the basement. We will see that this daisy chain approach introduces highapplication latency to users on the highest floor.In Scenario 2, the daisy chain topology is retained, but the core switch ismoved to the fifth floor. We will see that this reduces latency on the highestfloor but increases it on the bottom floor.In Scenario 3, the core switch is kept in the basement, but ollapsedbackbonetopology is used, in which the core switch in the basement is linked directly to the workgroup switch on each floor.
Several users are connected to a switch on each of the 10 floors. The share an Oracle server and 7 File, Print, and Email servers in the basement.The users on different floors are running a 2 Tier Oracle application. We willstudy the performance of this application.And showed me the error message in pictures (3) I asked the doctor and she told me to change the Switch name (located in the red box in picture) but still error constant I think the error is due to the type of Switch (core switch) or the type of link between the (core switch) and (7 File Print & Email Ervers)
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Jan 26, 2012
I need to generate an ODBC connection to the upm Datasource on LMS 4.1 running on Win2K8. I have successfully built connections to cmf, ipm and rmeng, however UPM keeps failing saying that the Database is not found.
Here are my settings.
Driver = CiscoWorks Embedded Database
ODBC Tab - Data source name = upm
ODBC Tab - Description = Device Performance
Login Tab - Supply user ID and Password is selcted
Login Tab - User ID = lmsdatafeed (i have tried DBA as well)
Login Tab - Password = set using the password I estabplished with the dbaccess.pl and dbpasswd.pl scripts
Database.Server name = upmEng
Network.TCP/IP = HOST=<lms server ip>;DOBROADCAST=NO;ServerPort= 43800
I validated the server port using netstat -a -b -o and matching up the PID with the UPMDBEngine process shown in the LMS Manage Processes window.Windows firewalls on the remote machine and the LMS server are off.
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