Reconfiguring network switches as 802.1q VLAN trunks for VMware ESX implementation
My data center network switches are configured as access ports, but we are soon implementing VMware ESX. Is there an easy way to reconfigure the switches to operate as 802.1q VLAN trunks to take advantage of VMware’s VLAN management support?
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| January 19, 2009 10:14 PM
datacenter network cable management, Network equipment, Network switches, Networking, VLAN, VLAN management, VLAN trunking, VMware, VMware ESX
My data center network switches are configured as access ports, but we are soon implementing VMware ESX. Is there an easy way to reconfigure the switches to operate as 802.1q VLAN trunks to take advantage of VMware’s VLAN management support?
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| January 19, 2009 10:14 PM
datacenter network cable management, Network equipment, Network switches, Networking, VLAN, VLAN management, VLAN trunking, VMware, VMware ESX
4 VLANS, 3 locations, 3 Routers, No communication between Lans or VLANs
OK, here is my problem, I’m working on a project in the Test phase right now. I have 3 routers (Cisco 2811s), all running EIGRP, these are seperating 3 goegraphical regions. Each of these Routers is linked via Trunking line to a Switch which has 4 VLANs enable. According to everything I have found in [...]
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| December 16, 2008 5:54 PM
Cisco 2811, Cisco Routers, Networking, Routers, Routing protocols, Switches, Trunking, VLAN
OK, here is my problem, I’m working on a project in the Test phase right now. I have 3 routers (Cisco 2811s), all running EIGRP, these are seperating 3 goegraphical regions. Each of these Routers is linked via Trunking line to a Switch which has 4 VLANs enable. According to everything I have found in [...]
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| December 16, 2008 5:54 PM
Cisco 2811, Cisco Routers, Networking, Routers, Routing protocols, Switches, Trunking, VLAN
Can two switches, having VLAN defined in each, communicate without the help of Layer-3 device?
If in a single L2 Switch, IPs of the same range can communicate – then what’s the need of creating a VLAN for different IP range? Can two switches (having VLAN defined in each) communicate without the help of Layer-3 device? Thank you.
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| October 11, 2011 8:02 PM
IP range, Layer 2 switches, Layer 3 switches, Network design, Switch configuration, Switches, VLAN
If in a single L2 Switch, IPs of the same range can communicate – then what’s the need of creating a VLAN for different IP range? Can two switches (having VLAN defined in each) communicate without the help of Layer-3 device? Thank you.
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| October 11, 2011 8:02 PM
IP range, Layer 2 switches, Layer 3 switches, Network design, Switch configuration, Switches, VLAN
Need help with VLAN configuration
I have a router connected with Fast Ethernet to switch in VTP Server Mode (containing 2 VLANs) and then connected to a switch in transparent mode with three VLANs and after it a single switch in client mode. All these switches belong to the same domain and I have done interVLAN routing in it and [...]
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| December 27, 2008 7:13 PM
Fast Ethernet, InterVLAN Routing, NAT, Routers, Switches, VLAN, VLAN configuration, VTP Server Mode
I have a router connected with Fast Ethernet to switch in VTP Server Mode (containing 2 VLANs) and then connected to a switch in transparent mode with three VLANs and after it a single switch in client mode. All these switches belong to the same domain and I have done interVLAN routing in it and [...]
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| December 27, 2008 7:13 PM
Fast Ethernet, InterVLAN Routing, NAT, Routers, Switches, VLAN, VLAN configuration, VTP Server Mode
How to network VLANs together
What can be done for different VLANs to communicate including a router in a network, i.e., the commands when configuring on a router?
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| August 5, 2009 9:54 PM
COMMANDS, configuration, Configuration and deployment, Networking, Routers, Routing and switching, VLAN
What can be done for different VLANs to communicate including a router in a network, i.e., the commands when configuring on a router?
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| August 5, 2009 9:54 PM
COMMANDS, configuration, Configuration and deployment, Networking, Routers, Routing and switching, VLAN
Simple Switch config help!
Hi there, I have a very simple setup that I need to do on a Layer 2 Switch that has static routing. The switch has 24 ports and 16 of them will be used for the local network, and 6 of them for a DMZ. I just cant get the 6 DMZ port to work…I [...]
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| December 3, 2008 10:45 PM
NetGear GSM7224R, Networking, Switches, VLAN
Hi there, I have a very simple setup that I need to do on a Layer 2 Switch that has static routing. The switch has 24 ports and 16 of them will be used for the local network, and 6 of them for a DMZ. I just cant get the 6 DMZ port to work…I [...]
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| December 3, 2008 10:45 PM
NetGear GSM7224R, Networking, Switches, VLAN
Associate Vlan with subnet
Hi, I can’t figure out how to associate a VLAN with a Subnet. For subnets you need to have a router in between. For VLAN’s trunking…but how do I associate these 2 so when a port on the switch is change from VLAN 1 to VLAN 2 to get IP address from a different subnet [...]
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| October 24, 2008 7:46 PM
DHCP, Subnets, VLAN, VLAN trunking
Hi, I can’t figure out how to associate a VLAN with a Subnet. For subnets you need to have a router in between. For VLAN’s trunking…but how do I associate these 2 so when a port on the switch is change from VLAN 1 to VLAN 2 to get IP address from a different subnet [...]
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| October 24, 2008 7:46 PM
DHCP, Subnets, VLAN, VLAN trunking
Guest Access on an 802.11x network
I am trying to set up 802.11x security on our network. The domain machines authenticate fine but a guest machine isn’t able to get access. I have set up a policy for it on the Radius server using it’s Mac address and the Wireless access point recognises the assigned VLAN but lists it as not [...]
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| October 20, 2008 11:15 AM
802.1x authentication, Radius, VLAN, Wireless Access Protocol
I am trying to set up 802.11x security on our network. The domain machines authenticate fine but a guest machine isn’t able to get access. I have set up a policy for it on the Radius server using it’s Mac address and the Wireless access point recognises the assigned VLAN but lists it as not [...]
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| October 20, 2008 11:15 AM
802.1x authentication, Radius, VLAN, Wireless Access Protocol
VLAN limits
Hello everyone, I’ve been asked to help with planning a total redesign of a network in order for them to sublet out individual offices to companies and provide shared services. Obviously the network needs to be divided up via VLANs so that each office is isolated, but all the offices need to be able to [...]
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| October 15, 2008 4:03 PM
Network Topology, VLAN
Hello everyone, I’ve been asked to help with planning a total redesign of a network in order for them to sublet out individual offices to companies and provide shared services. Obviously the network needs to be divided up via VLANs so that each office is isolated, but all the offices need to be able to [...]
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| October 15, 2008 4:03 PM
Network Topology, VLAN
Why would my L3 switch drop 20-80% of my pings?
Hi all, We are moving from a Linux based router to a L3 switch, Dell 6224. I’ve never configured a router before but I have experience with the Linux firewall, DHCP, DNS, etc. configuration so I was picked to configure the new router/ switch. We have 8+ subnets (labs) in the current configuration and the [...]
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| October 16, 2008 8:35 PM
Dell 6224, Layer 3 switches, Linux, Network connectivity, Network performance, Ping, Routers, Subnets, Switches, VLAN
Hi all, We are moving from a Linux based router to a L3 switch, Dell 6224. I’ve never configured a router before but I have experience with the Linux firewall, DHCP, DNS, etc. configuration so I was picked to configure the new router/ switch. We have 8+ subnets (labs) in the current configuration and the [...]
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| October 16, 2008 8:35 PM
Dell 6224, Layer 3 switches, Linux, Network connectivity, Network performance, Ping, Routers, Subnets, Switches, VLAN
Guest Access IAS policy
I am trying to set up guest access of 802.11 wireless access points. My IAS policy puts domain computers into vlan1 and on the AP they show “Forwarding Allowed”. I have set up a policy which recognises the mac address of my test guest and on the event log this is shown as a successful [...]
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| October 9, 2008 5:52 AM
802.11, Access Points, IAS, Internet Authentication Service, Remote access servers, Routers, VLAN, Wireless Access Protocol, Wireless networking, Wireless security
I am trying to set up guest access of 802.11 wireless access points. My IAS policy puts domain computers into vlan1 and on the AP they show “Forwarding Allowed”. I have set up a policy which recognises the mac address of my test guest and on the event log this is shown as a successful [...]
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| October 9, 2008 5:52 AM
802.11, Access Points, IAS, Internet Authentication Service, Remote access servers, Routers, VLAN, Wireless Access Protocol, Wireless networking, Wireless security
Need help configuring Cisco ACS
I’m configuring a Cisco ACS and now I have this problem: The Authentication of the IETF Radius-server operates properly but the authentication of the NAC doesn’t work. All clients come in my quarantine-VLAN. In the logs there is the SharedRAC: Quarantine_RAC displayed. I had configure 3 components in “Shared Profile Components – RADIUS Authorization Components”: [...]
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| September 15, 2008 3:32 PM
Authentication, Cisco, Cisco Secure ACS, EAP, Network access, Remote access, VLAN
I’m configuring a Cisco ACS and now I have this problem: The Authentication of the IETF Radius-server operates properly but the authentication of the NAC doesn’t work. All clients come in my quarantine-VLAN. In the logs there is the SharedRAC: Quarantine_RAC displayed. I had configure 3 components in “Shared Profile Components – RADIUS Authorization Components”: [...]
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| September 15, 2008 3:32 PM
Authentication, Cisco, Cisco Secure ACS, EAP, Network access, Remote access, VLAN
VOIP and Routing Question
Please advise. We have a branch office with a Cisco 3560 48/port POE switch. The branch office has 20 users in VLAN 1. The switch interfaces with a Cisco 2811 router. The router has a T1 point to point to our main office. We are putting in VOIP so each user has a phone -> [...]
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| February 23, 2011 11:54 PM
Cisco 2811, Cisco 3560, Cisco Routers, Networking, Routers, Routing, Switches, VLAN, VoIP
Please advise. We have a branch office with a Cisco 3560 48/port POE switch. The branch office has 20 users in VLAN 1. The switch interfaces with a Cisco 2811 router. The router has a T1 point to point to our main office. We are putting in VOIP so each user has a phone -> [...]
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| February 23, 2011 11:54 PM
Cisco 2811, Cisco 3560, Cisco Routers, Networking, Routers, Routing, Switches, VLAN, VoIP
DHCP sever and how it work with ip phone
Iam i right in saying you alot of ip phone ask the dhcp sever for a address when there started up — cant they just has a static address allocated to each handset on a vlan
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| December 17, 2010 7:15 AM
DHCP, IP phones, Static IP address, VLAN
Iam i right in saying you alot of ip phone ask the dhcp sever for a address when there started up — cant they just has a static address allocated to each handset on a vlan
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| December 17, 2010 7:15 AM
DHCP, IP phones, Static IP address, VLAN
Ethernet layer 2 and (VLAN)?
What role does an Ethernet layer 2 switch play in virtual local-area networks (VLAN)?
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| August 21, 2008 3:57 PM
Ethernet, Layer 2 switches, Switches, VLAN, VLAN software
What role does an Ethernet layer 2 switch play in virtual local-area networks (VLAN)?
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| August 21, 2008 3:57 PM
Ethernet, Layer 2 switches, Switches, VLAN, VLAN software
vlan trunking commands
sir can u please tell me can we able to trunk one vlan to another vlan in same switch.switch is cisco 3560 series switch.if so what will the commands..
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| August 19, 2008 11:03 AM
Cisco, Cisco 3560, Switches, VLAN, VLAN trunking
sir can u please tell me can we able to trunk one vlan to another vlan in same switch.switch is cisco 3560 series switch.if so what will the commands..
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| August 19, 2008 11:03 AM
Cisco, Cisco 3560, Switches, VLAN, VLAN trunking
vmware infrastructure and migrating vlans between hosts
I have a set of hosts in a cluster and I need vlans on all of them, but the only way to get the vlans on all of them is to manually set them up on each. Is there a way to migrate all the vlans to each and only enter them once?
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| July 23, 2008 7:18 PM
VLAN, VMware, VMware ESX
I have a set of hosts in a cluster and I need vlans on all of them, but the only way to get the vlans on all of them is to manually set them up on each. Is there a way to migrate all the vlans to each and only enter them once?
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| July 23, 2008 7:18 PM
VLAN, VMware, VMware ESX
IPv6 subnet size?
In IPv4 we normally design our subnets (with direct relationship to Vlan for ease of use as well) to 255 hosts using a /24 subnet mask. i.e. 10.10.10.0/24 is Vlan 10 with 10.10.10.1 being the default gateway. In IPv6 what is the thought process of creating “subnet” on a LAN and VLans? I know there [...]
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| July 14, 2008 6:47 AM
IPv6, LAN, Subnets, VLAN
In IPv4 we normally design our subnets (with direct relationship to Vlan for ease of use as well) to 255 hosts using a /24 subnet mask. i.e. 10.10.10.0/24 is Vlan 10 with 10.10.10.1 being the default gateway. In IPv6 what is the thought process of creating “subnet” on a LAN and VLans? I know there [...]
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| July 14, 2008 6:47 AM
IPv6, LAN, Subnets, VLAN
Inter VLAN Routing
I amm using two cisco 3750 and I want Interdomin routing. I connect two host to one 3750 and make a trunk to communicate with other 3750. Ping from host to switch(Directly connected to host) is ok. ping from switch to switch is ok(Through trunk) But when i ping a host to swich that is [...]
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| July 7, 2008 5:50 AM
Cisco 3750, InterVLAN Routing, Routers, Switches, VLAN
I amm using two cisco 3750 and I want Interdomin routing. I connect two host to one 3750 and make a trunk to communicate with other 3750. Ping from host to switch(Directly connected to host) is ok. ping from switch to switch is ok(Through trunk) But when i ping a host to swich that is [...]
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| July 7, 2008 5:50 AM
Cisco 3750, InterVLAN Routing, Routers, Switches, VLAN
Netgeat Vlan help
Hi, I have got a Dell L3 Switch (PC6224) 1x FSM750S 48port Managed switch 1x FS726T 26port smart switch 1x GS724TS 24port smart switch My aim is to create a number of Vlans, but I am not entirely sure if this will work with the hardware I have got. If anyone could tell me how [...]
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| December 1, 2010 1:22 PM
Cisco, Dell, Dell L3 switches, Dell PowerConnect 6224, FS726T 26port smart switch, FSM750S 48port Managed switch, GS724TS 24port smart switch, Netgear switches, Network Configuration, Networking, VLAN, VLAN hardware
Hi, I have got a Dell L3 Switch (PC6224) 1x FSM750S 48port Managed switch 1x FS726T 26port smart switch 1x GS724TS 24port smart switch My aim is to create a number of Vlans, but I am not entirely sure if this will work with the hardware I have got. If anyone could tell me how [...]
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| December 1, 2010 1:22 PM
Cisco, Dell, Dell L3 switches, Dell PowerConnect 6224, FS726T 26port smart switch, FSM750S 48port Managed switch, GS724TS 24port smart switch, Netgear switches, Network Configuration, Networking, VLAN, VLAN hardware
