I am in the process of planning our new network. Our business is changing from hosting its own data centre, to moving it to a professional facility. We have 120 users, over 100 servers (physical and virtual) and three sites (main premise, data centre, dr site). The new network will connect all three. Our new WAN links are almost ordered. We will be making use of a managed MPLS IP VPN, with a 100M access rate at each site. I am currently focusing on the desing of the network at the main business premise. We have a significant investment in Cisco 2960 & 3750 switches and Fortinet firewall appliances. I plan to re-use these in the design.
Our current LAN is very flat and I want to segment the network. My plan is to create a number of VLANs, enable the Inter VLAN routing on the 3750 and then attach the 3750 to the Fortinet appliance which will provide stateful firewalling and traffic policin based on the VLAN (subnet) addresses. It is important that the traffic be routed as quickly as possible from this site to our prod and dr data centres.The 2960's act as the access layer, the 3750 as the distribution layer. The 2960's will connect via port channels (layer 2) to the 3750's and the VLAN interfaces will be configured on the 3750.
I was then planning on creating a VLAN on the 3750 to connect to the Fortigate appliance with a /29 address to limit the addresses used whilst also providing some flexibility for any future design changes.I want to implement a little security between the VLANs on the 3750 switches. I have a question about this coming up.I then plan to use the Fortigate appliance to do basic traffic policing based on source/destination addresses.
The WAN routers will connect to the Fortinet appliance on a Gigabit copper interface. The WAN routers will run HSRP between themselves and only one router will be active at any one time. The failover will be managed by the Fortigate and Cisco routers.I plan to define those addresses hosted at the other data centres and associate them with the interface associated with the WAN.I will then define the routing on the firewall for the two other data centres through summary routes for each of the sites. We will run static routing from the Cisco 3750 to the Fortigate and Fortigate to WAN router. We have no other networks/sites and won't have any others in the future.
I have been recently asked to design a network. What I have for equipment is four 2960G's and one 1941 router. One switch is a root switch and the other three will have end devices on them.I have decided on three V lans to go with: VLAN20 Data, VLAN30 ISCSI, and VLAN99 Management each with seperate trunk links and redundancy (see picture below).
I have a seperate trunks for each V lan using the switch port trunk allowed. With exception to the Data V lan.My design has the Data V lan as the native because it is going to be receiving untagged traffic from the external network. I have set up inter v lan routing on the 1941 via sub-interfaces to allow them to talk to each other (or because of allowed they cannot?). I have one port coming from my router to my switch via Ethernet cable which is my bridge out. I have my external port doing a NAT translation for my inside addresses and a Default route set up ip route 0.0.0.0 0.0.0.0 gig0/0. I am using rapid- PVST to prevent loops and provide my zero downtime convergence when a link goes down. As it stands right now I cannot talk out of my network or inside of my network.
You can see it is highly redundant and I do not want to change it. This network is going to be deployed but there will never be anybody physically there to manage it which is why I made it as redundant as humanly possible.
I would like to be able to query the dot1dStpPortState obect on the Catalyst 2960-S on our LAN . Im running firmware c2960s-universalk9-mz.122-55.SE2.bin and according to the Cisco SNMP Object Navigator the object is supported (via the BRIDGE-MIB).However when i query using snmpwalk from my workstation :snmpwalk -v 2c -c bic-zua-ro 10.u.y.x 126.96.36.199.188.8.131.52.15.1.3 I receive and error .SNMPv2-SMI::mib-184.108.40.206.1.3 = No Such Instance currently exists at this OID For the sake of comparison, querying our 4700 :snmpwalk -v 2c -c bic-zua-ro 10.u.y.x 220.127.116.11.18.104.22.168.15.1.3 returns (as expected, cropped)
I need support on understanding and configuring dhcp relay agent And forwarding. Lets say a bunch of TCP/IP devices required a dhcp ip where it is installed on a perticular server to run so. The server having dhcp pool where it provide the devices with IP addresses as he recieve queries from them requesting to release their addresses. On 2960 switch no dhcp configured and ports assigned under specific vlan under those devices. The issue here, if power goes down and booting process started, the devices started to ask the server for ip add and it takes too much time and somehow it does not take ip and those request kind a dropped. As the minimum requirement is to configure relay agent on the switch and forwarding and multicast?
I found my dir-601 router keeps making arp query to all ip addresses in same network periodically.all dhcp clients are general laptops and smart phone, I don't think there are any arp cheats attack on those devices.is it normal?
model: DIR-601 hardware version: B1 firmware version : 2.00NA
and this router will connect to 18 access point.and each access point need 30 usable host...how to design this netwotk, what subnet should i use...there is only 1 router, so just have only 1 default gateway,it is if the network have too many host, the speed will slow down, because they need wait others host to broadcast?
I'm working on a new network design for my company. We're expanding and opening some more offices and satalite sites. We're a UK based company but opening some US sites.We have a main UK office (Office A on the diagram) a call centre (Office B) and then two buildings on another site (Office C). The USA offices will be very small and only require a couple of computers, hence the small IP allocation. I have marked the IP addresses of the links on the diagram, I intend to use 3560 switches for all the switches marked and all links will be layer 3 to route multiple VLANs from each site to each site (where permitted). question is this: How do I achieve this in the switches? I'm thinking that OSPF is the way forward, is this right? I want to do as little configuration on the switches as possible to allow for dynamic updates of the network (i.e. I don't want to add static routes for everything).
I have gotten the assignment of constructing a fictional network for my school.. and i cannot quite agree with myself upon which equipment i should choose.. its supposed to be all cisco. i need to supply 5000 users all in all, but only 300 on this site. i need to know which connections would be the most reasonable to use and of course which routers "if any" and switches i need.. (+ additional modules if needed) i have tried to make a visio representation, but i just think something is way off.
I have a new project coming up that will require more IPs added to an already quite full class C network. My other issue stems from foolishly putting all hosts in the crowded C network onto the management VLAN. In turn, I have to make each port a trunk.Moving forward I'm wondering what's best for design.or if I should just attempt to change the subnet mask across the board.?
I've been tasked with designing a network consisting of 3 separate broadcast domains with each one representing a separate business accross 3 separate floors. None of the companies should be able to communicate with each other.I've been told that the design should only represent the first 3 layers of the OSI model so I'm only looking at Cabling, Switching and Routing.
I don't expect you all to tell me exactly how I should do this, however I just need a starting point. My main issue is with routing. I'm aware that each port on a router represents a broadcast domain so if I use one router, 3 broadcast domains, does that means that none of the domains will be able to communicate with each other? Should I use more than one router or can i get away with one? Also just so you are aware I've been told not to use VLans and each broadcast domain must have its own ip address schema.
The following diagram is showing what I "Plan" on doing or "Hope" I can do. This is the most complicated deployment I have taken on in my profession, and Honestly it is very exciting, but had some questions.
1. The network between the ASA's and Routers, is that suppose to be a Private network or Public Network? I have to assume Public because I want my ASA's to take care of the NAT.
2. ASA's are runing single context Active/Standby so what way will the ASA push out going traffic?
3. The routers need to know about each other in a BGP configuration, correct? We accomplish this using iBGP so will that traffic need to be allowed through my firewall to allow the routers to share that information, or should these routers be talking to each other outside the firewalls?
Is this design possible? I am sure there are limitations as always, just trying to wrap my head around the flow of traffic and where to start.
Additional Details/Requirements -
BGP routers are 2921's that I have control of. Both routers have 4 port GigEtherswitches in them.
ASA's are Active/Passive and cannot be Active/Active due the limitations of the Active/Active Design (VPN limitations)
Both ISP's must be used for outbound traffic, I would like to be able to load balance, but can send some traffic one way and the rest of the traffic the other way based on Routes.
ISP's are not Symentrical, one is 50mbps and the other is 250mbps.
All NAT should take place at the ASA's
The routers that have gig etherswitches, can they run HSRP?
Should I be putting Layer 3 switches between the routers and the ASA's instead?
Where should I run my iBGP communication for the routers?
I'm looking for feedback and constructive criticism on our network redesign project for our company.We are currently on a 192.168.1.x/24 and running out of addresses. We are looking to move to the following design and implement VLANs as well for segregation and security. We are probably going to use a few SG300s for switches. [code]
I'm currently working on setting up 2 ASA 5510's with redundancy/failover. I'm not an expert when it comes to the ASA's so I'm not 100% sure if I can do what I need to.I have 2 inside networks that need to remain separate, a DMZ network,and an outside network. Since each network connects via ethernet to one of the 4 ethernet ports on the ASA 5510's, all 4 ethernet ports on the ASA 5510 will be in use. If I wanted to setup one firewall as Active and the other as standby, how would I go about doing that? Do I need a direct ethernet connection between the 2 firewalls to use something such as HSRP? Or would the Standby firewall be able to tell if the Active firewall is OK since they would both be connected on each of their interfaces to the same networks?
remote location on MPLS circuit terminated on a Cisco router that has Internet connectivity through Central Site router. We are installing a cable modem at the remote location that is to be used as the Primary Internet Connection but still be able to use Internet through MPLS if the cable Internet goes down. We want the failover/fallback to be handled automatically.
We have an ASA5505 for the cable Internet which then feeds into the ISPs modem.
At first I was thinking about getting a module for the remote router so the cable Internet could be terminated on the remote router as well but that introduces a single point of failure. I would also like to firewall both the MPLS and the cable Internet but if I do so on the ASA there is another single point of failure.
One of our clients is replacing some of their aging network components with 4 Cisco 2960S switches. Unfortunately in this case, my skills of switch configuration are greater than my skills of network design. I have a really crude network diagram of their basic network layout (4 servers, 4 switches, and a number of endpoints).
How would you experts design the physical connections in such a way as to facilitate some redundancy?
I am just browsing and looking for a solution to converge my multi-vendor switched network and bring some redundancy to it as recently we managed to get a redundant links. I have a need to change core switch to Cat3750G, which has Per-V LAN-RSTP+ on board, but tests have shown that it won't be compatible with some other proprietary per-V LAN RSTP solution other vendor's switches use currently.
So, I thought maybe standard-based MSTP design might do the trick. I've made some tests and got some weird and unstable switching result. I have two topology rings with a core switch in the center. Every ring has about 10 switches, so practically network diameter may vary from 5 switches (when spanning-tree converges in the center and I have a blocking port somewhere int the middle of the ring) to about 10-11 switches (if a I have link failure on any of ports right at the core switch). I disconnected one port from core switch to eliminate a possible switching loop while I will be configuring new MSTP design. Then I started enabling MSTP on all the switches staring from core Cat3750G to MSTP, one by one, placing all switches to the same MSTP region, and placing all V LAN's to default MSTI0(CIST) cause I don't need to organize any separate MSTP instances for every V LAN or for group of V LAN s. When I turned MSTP on on 7th or 8th switch in the chain (cause I had a physical chain when I disconnected one port out of redundant ring) I got all switches "flapping", storming and flooding the network with broadcasts. Even when I had one redundant port disabled.
I have no idea what I am doing wrong. I noticed that Cat3750G has an option that defines a possible network diameter which actually automatically changes some hello, max age etc. attributes according to diameter specified. When I defined a maximum network diameter of 7, if didn't change anything: I still have hello timer of 2 sec etc. I've been wondering if the maximum network diameter has something more than just a "variable" to fine tune hello timers etc? Maybe I won't be able to use MSTP in my network which might have diameter more that 7 switches. Or maybe it was a mistake of placing all the switches to the same region and all the v LAN s to the default MSTI0 (CIST) and I should configure one MSTI per V LAN or per some group of V LANs and subdivide my switches to few MSTP regions?
i have a query regarding the no. of isakmp policy priority creating..when i create a new policy in ASA 5500 firewall, i get the below error...i assume it will support only 20 nos, where as we can use between 1-65535.. can anyone from cisco confirm it...running version is 8.x & VPN Plus license.Policy limit reached. No more than 20 isakmp policies can be configured.”
I inherited a PIX 506 with 6.3. I will admit my background is more towards switching/routing. But while I know it is dinosaur, I need to maintain for partner interoperability. I just want to confirm that what I am thinking is correct and inf not how I can correct it.My thought is that since the access-list command doesn't list "eq" at the end, all ports and protocols are allowed?The other thing I am not used to is that the access-list has not id/number included in the command, so I assume that access-group specifies this functionality.
We have subscribed for MPLS links from Service provider we have a DC where the core connectivity is 90 MB and Remote branch location Connectivity is 64 Kbps. We are in process of enabling QOS for our links with co-ordination with Service provider ; as per our finding the branches have more RX traffic (downloading) so after discussion with provider we were advised to mark traffic from the core end and give it to the provider.The provider at its PE will honor the marking and set some B/W percentages and prioroty based on the DSCP marking values.
We need to mark this traffic so it is feasible to mark the traffic at the core DC router which has the below H/W details,Cisco 7206VXR (NPE-G2) processor (revision A) with 917504K/65536K bytes of memory. Processor board ID 36161439 MPC7448 CPU at 1666Mhz, Implementation 0, Rev 2.2 6 slot VXR midplane, Version 2.11
or is it feasible to mark the traffic at the core switch.
I am setting up a Linux apache and bind server to test the behaviour of Windows XP,Vista, 7 and Mac OS X.I have setup a apache and bind already and they were tested individually. I used Firefox and IE to access the apache page by type in the IPv6 address and the page was showed correctly. And I have tried to query the AAAA record of a local zone "testing.com" in my Bind server using nslookup and the result is good too.However, it is strange that I cannot get it work if I type in the FQDN "http://testing.com" in Firefox and IE. I tried to capture the IPv6 traffic in Wireshark (Attached in this post) and there are no DNS query when I try to access the page. Is there anything that I have to set to get it work properly?(Actually I have tested the same thing on Mac OS X and Vista too but the result is the same)Below is my Windows 7 network setting and some nslookup query:
We have Cisco 7609 Router and one 6 Mbps link which is on ethernet . When we are trerminating on Gigaethernet of 7609 router it is not coming up. While same link is showing up and working fine on other routers which is having Ethernet interface.
I have a Linksys RV042 and I came aceoss the setting " Dynamic IP+Domain Name(FQDN) authentication" setting under the Local Security Gateway type. How this option actually works. I tried googling but couldn't find a proper link.
I was unable to telnet in to a SQL server on port 1433 to test the connection from the client PC.the application could connect and this alone verifies it is working on port 1433 for sql.My question is how can a telnet command on a specific port be blocked ?
I think I know what I'm talking about here, I just need someone to confirm that what I want to do is possible, and the way Im planning on doing it will work..Basically, I have a sky router (sagem model), and the wireless is weak upstairs in my house.So, I have ordered a new access point.What I want to do is keep the same wireless ssid and key etc, so my devices just connect.
Is it possible to find out the IP address of a PC connecting via Remote Desktop Connection.Running XP Pro on a network,I have admin rights to the PC's, but no direct access to the servers.Event viewer shows some details, but no IP address.