L3 Switch That Does VLANs?
Sep 5, 2006
I need a basic L3 switch for maybe 25 mbps that will do hopefully up to 50 VLANs and which will not require me to hire someone to configure it.
As much as I like Cisco, that rules them out.
The reason I'd like a Layer 3 switch is so that I can run my backups and inter-server transfers without adding to my bandwidth bill. Also, VLANS are a critical requirement as i have a lot of customers with root on their managed servers.
So i am looking at HP [gasp] switches. How "easy" is the web-based configuration widget? [I'm an advanced unix admin but networking is a mystery to me.]
This is a starter switch and once i have a full cab of servers I'll be able to spend $7K on a pair of 3560s and hire someone to configure them for me ... but until then what can i get to meet my requirements?
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Nov 5, 2008
how to add different IPs in different VLANs
My customer requests different IPs in different class C, that are belong to different VLANs in the switch. Let's say
- they have 1.1.1.10 already on their server with gateway value is 1.1.1.1
- now they want to have 1.1.2.10 too.
I have no trouble to provide them a new IP, but wonder how to setup on server now? Different range will use different gateways.
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Apr 16, 2009
Is there a VPS provider that will sell me a VM , and put it up somewhere, and can make me another VM in the future, on the same VLAN as the original VM ?
For example, pretend VM #1 has a NIC at 10.0.0.100
in the future, I want another VM with a nic at 10.0.0.101
I was looking at Go-Grid , but I'm not sure how their pricing works.
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Sep 22, 2009
My switch 3COM 4500 (Layer3) ;
I want port 1 of switch work in all VLANS!
I created vlan2, vlan3 and add this trunk/hybrid port in all vlans and ping no work por port1.
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Jul 13, 2009
I orded today new switch 3COM (48 port + 2giga + 2 fiber).
In WebPanel i created:
vlan2: port1 - port 20
vlan3: port21 - port40
I want configure switch for port 41-48 access all ports;
What solution for this cenary?
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Feb 11, 2007
I'm trying to implement VLANs on my network and can't get connectivity to host servers. Here's how the network is configured. Pardon the bad ascii diagram.
In this example my upstream is providing two subnets:
111.111.111.16/28 (I'm using an IP from this subnet to manage the 3550)
222.222.222.16/29
I am attempting subdivide the /29 into two /30's in order to place a server into it's own /30 subnet & VLAN ............
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Jul 24, 2007
What's the benefits of these private VLANs I've seen advertised around? Anyone have a good understanding?
I've read a few things about them but have yet to fully grasp the concept.
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Sep 18, 2009
a sales told me i can buy two switch and do series connection,
then if one fail,another will continue to work,
it will take high HA,
but i still can not understand how to do it and work,
could you know what it is?
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Dec 4, 2006
I'm not sure exactly how to phrase the question. But, I'm researching how to PXE boot a server without having a DHCP/PXE server in each vlan.
Scenario: Datacenter with dozens of servers. 1 VLAN per server. Cisco switches and routers. Each server has a serial console available for remote management (OS and BIOS are configured for serial console). If an admin wants to re-install OS, they should be able to reboot the server and tell the BIOS to initiate a PXE boot request. A central install server is available to provide the DHCP and PXE boot images.
Has anyone tried this? I have been reading about the 'ip helper-address' for Cisco to relay DHCP requests. Interested in hearing about real-world setups. Or is there a better way to accomplish remote OS installs?
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Aug 10, 2008
I have two servers both in a same vlan. Both may access Internet and be acceessed from Internet I setup db server and web server internal IP each as follows:
step 1: on web server:
vi /etc/sysconfig/network-scripts/ifcfg-eth0:0
add following:
DEVICE=eth0:0
BOOTPROTO=static
BROADCAST=192.168.1.255
IPADDR=192.168.1.5
NETMASK=255.255.255.248
NETWORK=192.168.1.0/24
ONBOOT=yes
TYPE=Ethernet
save and /etc/init.d/network restart
step 2: on db server:
vi /etc/sysconfig/network-scripts/ifcfg-eth0:0
add following:
DEVICE=eth0:0
BOOTPROTO=static
BROADCAST=192.168.1.255
IPADDR=192.168.1.10
NETMASK=255.255.255.248
NETWORK=192.168.1.0/24
ONBOOT=yes
TYPE=Ethernet
save and /etc/init.d/network restart
I used ifconfig to check both status, both of them are up. both of them may ping google, but when I try to ping their each other through internal IP, nothing returns.
I used command tracert to follow, found all packages were sent to Internet rather than an internal IP.
My host tells me to do it by making NAT, I have no idea on it. Anyone may help me out on how to do with NAT?
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Aug 8, 2008
we are looking for a provider that provides public ip vlans' with dedicated server purchases,
so far,,
we have found few companies that offer this at no extra charge or minimal extra charge
1) softlayer (best choice)
2) singlehop
3) nocster/burst.net (not a good provider for business hosting / not reliable / no phone support)
does anyone know of any other dedicated server providers that offer public ip vlans for no extra charge or minimal extra charge?
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Jun 9, 2007
I'm looking for a solution that I can place a firewall between 2 vlans on
a BigIron router with L3 enabled.
For this moment there is one big vlan2 with a ip-route 0.0.0.0 0.0.0.0
123.123.123.123 and a router-interface ve2 with the IP of the router, the
address I use as gateway on the machines behind it.
The WAN port has the IP address to communicate with to the GW of the
carrier-router (123.123.123.122)
Because I want to let the BigIron the routing I was thinking of 2 vlans,
one for the lan-vlan and one for the wan-vlan, but this will be a problem
because I only have one IP-block what I can use.
So the sitiuation must be as follow on the BigIron:
WAN => vlan2 => firewall => vlan3(lan)
Because of the fact that the firewall will be transparent, this should be
no problem to place it between the vlans. The actual problem is how to
manage this. In simple words, I should be able to replace the firewall
with a cross-cable and it should still work.
Cisco for an example has a SVI solution for this, but I can't find such
thing for a Foundry router.
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Feb 13, 2007
Having a slight problem working with one of our Extreme Summit 48 (ugh) switches - I've figured out most of the basics, but I can't seem to find any way to add a secondary IP address to a VLAN! This, I would have thought, would be a pretty basic feature to have. Typing "config vlan [vlanname] ipaddress 1.2.3.4/24" works for setting the primary IP, but I can't figure out how to add any more - and doing the command again just overwrites the first one.
So... does anyone have any tricks up their sleeve, or is this something that Extreme neglected to add to this model switch?
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May 22, 2008
We offer colocation & dedicated servers as well as shared & reseller hosting services.
Our colocation customers and dedicated server customers are definitely on their own VLANs for obvious reasons.
Up until now, we have been using separate VLANS and ip allocations for each of the servers in our shared & reseller server fleet. I'm starting to question this policy for many reasons:
1) We directly manage all of the servers and it is very rare that any servers are compromised to the point where they can steal an IP address.
2) We are wasting IP addresses - network, broadcast and gateway addresses are required for each vlan. Additionally, if a server needs 1 more IP address, we need to add a whole new block.
If all of the servers are under our direct management, does it make sense for us to use any vlans at all? It seems that it only serves to complicate things, waste ips and add management overhead.
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Sep 19, 2009
I've read that all ethernet switches in a MST Region need the same Name, Revision number, and list of member vlans for each Instance. So what happens when you need to change the range of VLANs in a MSTI ? Let's say that you need to add a range of vlans to an instance that spans 20 switches? How would you do that?
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Oct 11, 2009
Can you make a recommendation for a switch-based L3 router which can
- hold a moderate number of routes (interface routes, a few hundred statics + default)
- OSPF and BGP
- MST
- 1024 layer-3 dot1q subinterfaces (or maybe VLAN interfaces)
with
+ traffic policing in and out per subinterface/vlan
+ VRRP/HSRP/NSRP
- IPv4 & IPv6 native
- 2x GigE ports
- Not tip-over under 1gbps DDoS towards a VLAN interface.
I've been using 3560Gs, but they seem to lack the output traffic policing. I'd prefer to have subinterfaces which don't run spanning-tree, versus Vlan Interfaces to a trunk interface which runs spanning-tree. These switches sit at the L3 boundary between two L2 networks.
Cost is a big factor; but I also must carry vendor licenses & support contract, if the vendor asserts that not doing so is illegal in US.
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Apr 9, 2008
We are co-located at a datacenter and host web sites, and corporate email systems, as well as host dedicated servers for customers.
We currently have two /25 internet facing subnets from our provider. We have a Watchguard X5500e 8 port gigabit firewall that supports routing as well as VLANs. We also currently own QTY4 2848 HP Gigabit switches.
We currently have each switch connected in a loop with 2 gigabit ports trunked using static LCAP. The switches are connected as follows:
A > B
B > C
C > D
D > A
Rapid STP is turned on. One thing is - is this the ideal trunking scheme?
The more important question is this. We would like to separate ips from each other using VLANing.
IE: we might have a client with 5 different IPs in one or more subnets and we would like to group them together.
We ideally do not want to break up the subnets into smaller ones as it makes it hard to reconfigure and it wastes ip addresses, as we do not have that many.
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Jan 8, 2009
I currently have a dedicated server, which is hosting several websites. I'm happy with the service I'm getting, but I'm trying to save money. I'm paying $120/month for the dedicated server. Spending half of that each month would be great.
Right now, the websites are either static websites, or are simple database driven websites with not much traffic. My server load averages are pretty close to 0.01
I would think a VPS would be fine for my needs. However, I may have a site I will host in the future that is database driven and uses Ruby on Rails. It would probably have 10-20 users online at any given time, and maybe several hundred subscribers total.
Would a VPS still work in this instance, or should I stick with a dedicated machine?
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Jul 23, 2009
We have 1 Gb/s channel. We want connect it to switch, than to two routers (first - main, and second - emergency, which will began work if first one dies).
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Feb 19, 2007
I'm sending off about 6 servers off to colo soon, and looking for a basic switch..
I would prefer it to be a Cisco switch (but doesnt have to be, just that i'm used to IOS), not used.
Fairly cheap and nothing overkill. Just going to be pushing 20Mbit/sec.
Must haves : vLan capabilities, SNMP, 10/100mbit upink, able to cap ports at non-standard rates (eg. 1mbit/11mbit).
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Sep 10, 2009
For those who have used 10G switches...which model/vendor would you recommend and why?
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May 10, 2009
This week connectswitch's service has not been that good. Basically first they restart the node without prior notice and our vps was down for 7 hours. and now we buy our cPanel license via them and they havent paid it so the license is now expired although we have paid them for it.
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Sep 26, 2009
we need more than 24x10 GE ports L2 switch. We have few Foundry SX800.
But we need opinion about Force10 S150 or Juniper EX-2500?
Or stay with Foundry and its SX1600?
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Sep 19, 2009
i find the brand of SMC,
do you have experience with SMC switch?
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Sep 23, 2009
I am looking at picking up a switch to mess around with at home. I found the following within driving distance but have no idea of which one will give me more up to date, hands on experience. Any feedback is greatly appreciated.
Used Cisco WS-C5509 Chassis with power supply ( POWER SUPPLY 34-0870-01), and fan (WSC5509FAN)
Cisco WS-X5530-E2 Supervisor Engine III Modules
Cisco Systems WS-U5537-FETX CISCO 4 PORT 100BASETX UPLINK MODULE
Cisco WS-X5234-RJ45 Switch Modules X 8
$160 each.
Cisco WS-C5500 Chassis
POWER SUPPLY 34-0773-03
Cisco Ws-x5550 Supervisor Engine Iii G-series
WS-X5234-RJ45 X 11
For $200
Cisco WS-C5505 Chassis
Cisco WS-X5530-E2 Supervisor Engine III Modules
Cisco WS-U5533-FEFX-MMF Supervisor Engine III Uplink Modules
Cisco WS-X5225R Switch Modules X 2
For $140
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Jul 27, 2009
which switches to buy as there are a myriad of options out there and I'm quite frankly a bit lost.
After reading through a bunch of posts here as well it looks like most people are leaning towards the Cisco Catalyst or HP ProCurve lines.
My requirements are:
- min. 24 Ports (4 SFP ports) 10/100/1000
- Layer 3 routing
- Low latency is more important than high throughput
- Switches will handle a lot of UDP multicasting, thus adequate buffers are important to minimize packet loss due to overflowing buffers
- Budget is ~$2k/switch
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Apr 15, 2009
What is the purpose of making the switch. If i were to get "unlimited/umetered" shared hosting with cpanel, how is that different then getting a vps with cpanel?
Other then getting large amounts of traffic, what is the purpose?
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Apr 27, 2009
Requirements:
My budget: $4 per month
Space needed: 1GB+
Traffic: 20GB per month
PayPal payment only.
Multiple domain hosting.
CPanel.
And reliable at long last!
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Feb 13, 2008
We have a small hosting company (currently 24 racks) that we are expanding to hold 100 racks. We have several 3640 series routers behind a 7200 series router (our edge router) that feed into numerous 2950 switches and 515 & 525 pix firewalls then into the racks with customer supplied switches within the rack. I want to replace all the 3640 and 2950 switches with a 6500 series switch. The only routing we do within the 3640's is subnet routing to the switches which make up individual networks for each customer. My goal is to use the 6500 switch to limit bandwidth for each port feeding a customer and to eliminate all but the 7200 router and the 2950 switches. Does anyone know of a reason or reasons this would not work or if it's just a bad idea. Looking for pro's and con's,
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Jul 8, 2008
Does anyone know of a fairly low cost dual power supply Ethernet switch. Nothing fancy is needed, just a simple 12-24 port switch that has redundant power features.
Our router and four little servers all have dual power supplies. Two big UPS units in a redundant setup would work great for us. The only weak link in the setup is the switch.
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May 4, 2008
I just bought 2 Gbit dedicated bandwidth for me, and my customers. This is the switch the DC gave me. I know it is a 24 port switch, that can handle up to 4 Gbit of bandwidth. And that you can give each port its own dedicated bandwidth.
But this is my question. Off this switch can I give metered bandwidth? Like 2000 GB Bandwidth?
Also how would I offer unmeterd bandwidth? Like hook up a cheap Linksys up to it and limit the bandwidth to the port that the Linksys is in?
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