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тАО09-07-2009 03:23 AM
тАО09-07-2009 03:23 AM
I've attached diagram that I want to setup in my client network. I have never done HP switch configuration before and want to configure it as you can see in the diagram. I want to setup following things on the Switch 1 and 2.
1. Configure 2 vlans on both switches so they can communicate with each others. How would I configure trunk ports on both switches.
2. How do I setup DHCP on switch-2. Switch-1 does not need to have DHCP at all as it has server with DHCP scope.
3. How would I configure routing for both VLANS on both switches ?
Would you please guide me through AS soon As you can...
Solved! Go to Solution.
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тАО09-07-2009 12:54 PM
тАО09-07-2009 12:54 PM
Re: hp 2910al switch trunking and basic understanding
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тАО09-07-2009 10:37 PM
тАО09-07-2009 10:37 PM
Solutionlet's see:
conf t
trunk 1,2 trk1 trunk //<--Uplink between the switches
vlan 1
ip address 180.10.1.1(2)/24//.1 at switch 1 and .2 at switch 2
tagged trk1
untagged 3-10// native ports of vlan 1
exit
vlan 2
ip address 180.10.2.1(2)/24//.1 at switch 1 and .2 at switch 2
tagged trk1
untagged 11-24// native ports of vlan 2
exit
wr mem
thats basically the config for both switches
on switch 1
conf t
ip routing
ip route 0.0.0.0 0.0.0.0
wr mem
on switch 2
conf
ip default gateway 180.10.1.1
wr mem
in this setup you don't need routing at switch 2!
at the clients of vlan 1 you apply 180.10.1.1 as default gateway and on vlan 2 you apply 180.10.2.1 as default gateway.
at your fw you need a route like:
ip route 180.10.2.0 255.255.255.0 180.10.1.1//ip of switch 1 in vlan 1
the HP switche can't act as DHCP-Server, you only can apply a dhcp-relay
on switch 1
conf
vlan 2
ip helper-address
exit
wr mem
hth
alex
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тАО09-08-2009 12:30 AM
тАО09-08-2009 12:30 AM
Re: hp 2910al switch trunking and basic understanding
There are many posts allready present on this forum.
If it's that urgent try a search first.
In adition to Alex's post:
Switch-2 does not need to be setup for DHCP.
DHCP-requests within a vlan are broadcasted among the whole vlan, so it's also received at switch-1.
If it's on the same vlan as the dhcp-server, it's also recieved by this server, so no problem there.
If it's on another vlan, then switch-1 must route it to the vlan where the dhcp-server resides, that's done by the ip-helper setting as described by Alex.
your dhcp-server must be configured with multiple scopes, one for each vlan/subnet!
You may need to look into that.
The scope for vlan-1 must have the default-gateway set to switch-1's ip-address for vlan-1, and the scope for vlan-2 must have it set to switch-1's address for vlan-2, etc.
regards,
Pieter
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тАО09-08-2009 03:47 AM
тАО09-08-2009 03:47 AM
Re: hp 2910al switch trunking and basic understanding
My DHCP is server is sitting behind the VLAN-1 scope for VLAN-2 so I will configure ip-helper command as mentioned here.
Do I need to write route on both switches to reach to each others subnets ?
such as
on switch1 :
route 180.10.2.x 255.255.255.0 180.10.2.242 ( Switch 2 Vlan 2 IP address )
and on Switch 2 :
route 180.10.1.x 255.255.255.0 180.10.1.241 ( Switch 1 Vlan 1 IP Address )
Can you pls advise me this ..
Thanks,
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тАО09-08-2009 03:59 AM
тАО09-08-2009 03:59 AM
Re: hp 2910al switch trunking and basic understanding
no you don't need to add those routes.
on switch 1, which is doing all the intervlan routing, it will be added automatically.
hth
alex
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тАО09-08-2009 07:14 AM
тАО09-08-2009 07:14 AM
Re: hp 2910al switch trunking and basic understanding
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тАО09-08-2009 12:59 PM
тАО09-08-2009 12:59 PM
Re: hp 2910al switch trunking and basic understanding
If someone else can throw some light on this too pls.
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тАО09-08-2009 11:34 PM
тАО09-08-2009 11:34 PM
Re: hp 2910al switch trunking and basic understanding
A vlan only serves to group some ports as if they are in a different LAN.
It basically has no knowledge of ip-adresses.
You can do any protocol other than tcp/ip on such (V)LAN.
You assign an ip-address to the switch for management purposes, or if the switch must function as tcp/ip-router.
You can use any adress on any (v)lan even duplicate adresses on different vlans as long as they don't need to communicate with one another..
Assigning an address to a vlan on a switch is not enough.
Ip-adresses kan be dynamically assigned by a DHCP-server. In smaller networks some network-device (like ADSL-router) can do this, but mostly it is a separate server (windows, unix, etc).
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тАО09-09-2009 03:46 PM
тАО09-09-2009 03:46 PM
Re: hp 2910al switch trunking and basic understanding
I have a different feeling here. I am wondering that why would I use 2 VLANs here. let me tell you my scenario again. I am so confused and need your assistance for designing 2 procure 2910al-24G switch.
1. Switch-1 subnet 180.10.1.0/24
2. Switch -2 subnet 180.10.2.0/24
3. How would I configure Switch-2 to talk with Switch-1 subnet.
MY Plan:
I am planning on configuring 1 vlan on both side and assign IP address on switch-1 port 24 : 180.10.2.241/24 and Switch-2 port 24 : 180.10.2.242/24 and configure there both switch port as trunk port. And configure switch-2 default gateway as 180.10.2.241 and Switch-1 default gateway will be my firewall IP and firewall will have a return route for 180.2.10.0/24 network.
Can someone guide me whether this is going to work or not.
Your assistance will be much more helpful...