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Configuring layer-3 switch to be a router
How to configure L3 switch to act as router? How error frames are generated, detected, cleared in a switch?
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| February 26, 2013 10:47 AM
L3 Switches, Networking hardware, Routers, SDN, Switch configuration
How to configure L3 switch to act as router? How error frames are generated, detected, cleared in a switch?
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| February 26, 2013 10:47 AM
L3 Switches, Networking hardware, Routers, SDN, Switch configuration
2 isp ADSL Load balance with cisco 3560
Hello. It is possible to load balance 2 isp (2 adsl link) with cisco 3560 L3 switch? how can I do it? thanks in advance! best regards.
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| October 7, 2010 3:26 PM
Cisco 3560, Cisco Loadbalancer, L3 Switches, Network Load Balancing
Hello. It is possible to load balance 2 isp (2 adsl link) with cisco 3560 L3 switch? how can I do it? thanks in advance! best regards.
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| October 7, 2010 3:26 PM
Cisco 3560, Cisco Loadbalancer, L3 Switches, Network Load Balancing
L2 versus L3 on your WAN
We are running Comcast Fiber between sites. I was wondering what the best practice is for using Layer 2 or Layer 3 across the link. We current use both. Are there security reasons for doing one versus the other? Also interested in hearing general thoughts on it.
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| February 20, 2010 6:53 PM
L2 Switches, L3 Switches, Layer 2, Layer 3, Network Security Policies, Networking security, WAN, Wide Area Networks
We are running Comcast Fiber between sites. I was wondering what the best practice is for using Layer 2 or Layer 3 across the link. We current use both. Are there security reasons for doing one versus the other? Also interested in hearing general thoughts on it.
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| February 20, 2010 6:53 PM
L2 Switches, L3 Switches, Layer 2, Layer 3, Network Security Policies, Networking security, WAN, Wide Area Networks
configuring L3 switch to router
I have router having public address in F0/1 and S0/0 I have no firewall, Hence i am connecting Cisco 3560 Switch directly to the router. but i am anable to ping from my local vlans to the S0/0 I tried Nat and all the thing by switch port and no switch port commands. Every thing i [...]
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| October 14, 2011 11:16 AM
Cisco, Cisco Internetworking, L3 Switches, Routers
I have router having public address in F0/1 and S0/0 I have no firewall, Hence i am connecting Cisco 3560 Switch directly to the router. but i am anable to ping from my local vlans to the S0/0 I tried Nat and all the thing by switch port and no switch port commands. Every thing i [...]
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| October 14, 2011 11:16 AM
Cisco, Cisco Internetworking, L3 Switches, Routers
HSRP in cisco
I have L3 core switches, I want to configure HSRP for vlan 30, Please verify my configuration. My active router should be core 3 switch. Core swith 1 interface Vlan30 description ***Wireless Network Vlan*** ip address 192.168.21.252 255.255.254.0 no ip redirects no ip unreachables no ip proxy-arp standby 30 ip 192.168.21.253 standby 30 priority 110 [...]
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| August 26, 2009 4:24 AM
Cisco IOS, Cisco IOS Commands, HSRP, L3 Switches, VLAN
I have L3 core switches, I want to configure HSRP for vlan 30, Please verify my configuration. My active router should be core 3 switch. Core swith 1 interface Vlan30 description ***Wireless Network Vlan*** ip address 192.168.21.252 255.255.254.0 no ip redirects no ip unreachables no ip proxy-arp standby 30 ip 192.168.21.253 standby 30 priority 110 [...]
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| August 26, 2009 4:24 AM
Cisco IOS, Cisco IOS Commands, HSRP, L3 Switches, VLAN
VLAN routing Problem
Hi all I have a situation here, I have created some VLANs on a L3 switch(Nortel), no problem with this. Inter vlan routing is taking place over here as well. I have connected this L3 with a 2511 Cisco router. Here I want to mention one thing that all the VLANs can ping the outgoing [...]
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| October 27, 2010 6:04 PM
Cisco 2511, Cisco Routers, L3 Switches, Routing, Switches, VLAN, VLAN management
Hi all I have a situation here, I have created some VLANs on a L3 switch(Nortel), no problem with this. Inter vlan routing is taking place over here as well. I have connected this L3 with a 2511 Cisco router. Here I want to mention one thing that all the VLANs can ping the outgoing [...]
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| October 27, 2010 6:04 PM
Cisco 2511, Cisco Routers, L3 Switches, Routing, Switches, VLAN, VLAN management
Configuration between L3 switch 3750 and L2 switch 2960 via trunk port
I am going to connect three L2 switches 2960 from L3 Switch 3750, means all three L2 switches are connected to L3 switch via trunk switch. Thanks & Regards, And i am going to configure VLANs on L3 Switch. So plz let me suggest,if both switches are in server mode then i should configure VLAN [...]
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| June 19, 2009 9:53 AM
Cisco, Cisco 2960, Cisco 3750, Cisco Catalyst 2960, Cisco Catalyst 3750, Cisco switch configuration, Cisco switches, Cisco VLAN, L2 Switches, L3 Switches, Switch configuration, Switches, VLAN
I am going to connect three L2 switches 2960 from L3 Switch 3750, means all three L2 switches are connected to L3 switch via trunk switch. Thanks & Regards, And i am going to configure VLANs on L3 Switch. So plz let me suggest,if both switches are in server mode then i should configure VLAN [...]
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| June 19, 2009 9:53 AM
Cisco, Cisco 2960, Cisco 3750, Cisco Catalyst 2960, Cisco Catalyst 3750, Cisco switch configuration, Cisco switches, Cisco VLAN, L2 Switches, L3 Switches, Switch configuration, Switches, VLAN
Bind IP subnet to VLAN in Dell L3 switch
when I bind an IP subnet to dell 6224 switch, does it mean when i plug in a pc within tat particular subnet will directly be in that VLAN? Example: i type in “vlan association subnet 10.0.1.0 255.255.255.0 10″ to bind subnet 10.0.1.0 to VLAN 10. so is it when i plug in a PC [...]
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| February 29, 2012 4:34 AM
Dell PowerConnect 6224, L3 Switches, Layer 3 switches, Subnets, Switch configuration, Switches, VLAN, VLAN configuration
when I bind an IP subnet to dell 6224 switch, does it mean when i plug in a pc within tat particular subnet will directly be in that VLAN? Example: i type in “vlan association subnet 10.0.1.0 255.255.255.0 10″ to bind subnet 10.0.1.0 to VLAN 10. so is it when i plug in a PC [...]
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| February 29, 2012 4:34 AM
Dell PowerConnect 6224, L3 Switches, Layer 3 switches, Subnets, Switch configuration, Switches, VLAN, VLAN configuration
Performance of Cisco 3750 Layer 3 switch
Hi guys, I have a cisco 3750 series L3 switch. It can currently handle 3GB of L2 traffic with no problem, but when faced with 40MB of L3 traffic, CPU utilization shot so high that I can’t even telnet to the switch. Could anyone enlighten me please? Thanks in advance!!
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| May 14, 2009 4:15 AM
Cisco 3750, Cisco 3750 configuration, Cisco switch configuration, Cisco switches, L3 switch, L3 Switches, Layer 3 switch, Layer 3 switches, Switch configuration, Switches
Hi guys, I have a cisco 3750 series L3 switch. It can currently handle 3GB of L2 traffic with no problem, but when faced with 40MB of L3 traffic, CPU utilization shot so high that I can’t even telnet to the switch. Could anyone enlighten me please? Thanks in advance!!
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| May 14, 2009 4:15 AM
Cisco 3750, Cisco 3750 configuration, Cisco switch configuration, Cisco switches, L3 switch, L3 Switches, Layer 3 switch, Layer 3 switches, Switch configuration, Switches
MAC address binding in Layer 2 and Layer 3 switches
How can we do MAC address binding in Layer 2 (L2) and Layer 3 (L3) switches?
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| January 25, 2011 12:17 AM
L3 Switches, Layer 2 switches, Layer 3 switches, MAC address, Network equipment, Network hardware, Networking, Routing and switching
How can we do MAC address binding in Layer 2 (L2) and Layer 3 (L3) switches?
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| January 25, 2011 12:17 AM
L3 Switches, Layer 2 switches, Layer 3 switches, MAC address, Network equipment, Network hardware, Networking, Routing and switching
Applying no IP route-cache on VLAN interfaces in a Layer 3 switch
Is it necessary to apply no IP route cache on virtual local area networks (VLAN) interfaces in an L3 switch and why? What are the advantages or disadvantages?
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| February 11, 2009 6:40 PM
IP routing protocols, L3 Switches, Layer 3 switches, Networking, Switches, Virtual LAN, VLAN
Is it necessary to apply no IP route cache on virtual local area networks (VLAN) interfaces in an L3 switch and why? What are the advantages or disadvantages?
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| February 11, 2009 6:40 PM
IP routing protocols, L3 Switches, Layer 3 switches, Networking, Switches, Virtual LAN, VLAN
When not to use a Layer 3 switch over a router
If a Layer 3 switch is faster than a router, why can’t we use an L3 in place of a router?
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| February 27, 2013 3:57 PM
L3 Switches, Layer 3 switches, Networking Equipment, Networking hardware, Routers, SDN, Switches
If a Layer 3 switch is faster than a router, why can’t we use an L3 in place of a router?
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| February 27, 2013 3:57 PM
L3 Switches, Layer 3 switches, Networking Equipment, Networking hardware, Routers, SDN, Switches
Why use Layer 3 switches and how do they differ from Layer 2 switches?
Why do we use Layer 3 (L3) switches, and how are they different from Layer 2 (L2) switches?
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| February 26, 2013 10:06 PM
L3 Switches, Layer 2 switches, Layer 3 switches, Layer switching, Networking, Networking Equipment, Networking hardware, SDN
Why do we use Layer 3 (L3) switches, and how are they different from Layer 2 (L2) switches?
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| February 26, 2013 10:06 PM
L3 Switches, Layer 2 switches, Layer 3 switches, Layer switching, Networking, Networking Equipment, Networking hardware, SDN
Port Forwarding with Cisco 3560
Hi Friends, I have a small requirement. please see my configuration. i have an L3 switch (Cisco 3560) series and now i am forwarding all the traffic from my network to Firewall from L3 switch through this default route ” ip route 0.0.0.0 0.0.0.0 10.11.12.2″ where 10.11.12.1 is my L3 switch 10.11.12.2 is my firewall [...]
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| February 2, 2009 11:53 AM
Cisco, Cisco 3560, L3 Switches, Layer 3, Layer 3 switches, Network administration, Port 445, Port 80, Port forwarding, SMB over IP, Switch configuration, Switches
Hi Friends, I have a small requirement. please see my configuration. i have an L3 switch (Cisco 3560) series and now i am forwarding all the traffic from my network to Firewall from L3 switch through this default route ” ip route 0.0.0.0 0.0.0.0 10.11.12.2″ where 10.11.12.1 is my L3 switch 10.11.12.2 is my firewall [...]
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| February 2, 2009 11:53 AM
Cisco, Cisco 3560, L3 Switches, Layer 3, Layer 3 switches, Network administration, Port 445, Port 80, Port forwarding, SMB over IP, Switch configuration, Switches
Vlan trunking, L3 switch + L2 switch problem
Hi, I have now successfully got my PowerConnect 6224 configured, to host and route between 4 Vlans, I have internet access and can ping what I need to, it’s all working great. The next thing on my list is configuring my L2 netgear router to work with port based Vlans, I want to connect the [...]
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| February 16, 2011 10:53 AM
L3 Switches, Switches, VLAN, VLAN trunking
Hi, I have now successfully got my PowerConnect 6224 configured, to host and route between 4 Vlans, I have internet access and can ping what I need to, it’s all working great. The next thing on my list is configuring my L2 netgear router to work with port based Vlans, I want to connect the [...]
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| February 16, 2011 10:53 AM
L3 Switches, Switches, VLAN, VLAN trunking
Problem with Vlan DHCP, wrong Subnet IP address
Hi, I have a problem with my Vlan, the problem is; I have got a Win2k Server with DHCP configured, 1x Superscope, with 3 scopes underneath it, subnets 192.168.2.0 (range 100-254), 192.168.20.0 (range 100-254), and 192.168.30.0 (range 100-254). When I manually enter the to the port according Ip address on my client PC, it all [...]
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| February 10, 2011 1:22 PM
DHCP, L3 Switches, Subnets, VLAN
Hi, I have a problem with my Vlan, the problem is; I have got a Win2k Server with DHCP configured, 1x Superscope, with 3 scopes underneath it, subnets 192.168.2.0 (range 100-254), 192.168.20.0 (range 100-254), and 192.168.30.0 (range 100-254). When I manually enter the to the port according Ip address on my client PC, it all [...]
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| February 10, 2011 1:22 PM
DHCP, L3 Switches, Subnets, VLAN
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