NetVanta 1534 - Benefits Of Using Layer 3 Switch As Opposed To Router For Distributing Traffic
Nov 30, 2011
What are the benefits of using a Layer 3 switch as opposed to a router for distributing traffic? Basically the building I work in has a fiber line coming in which then gets connected to a Level 3 switch (NetVanta 1534) which is then connected to all the ethernet ports and what not. Why would they choose to use this device as opposed to a router? Or just a regular Layer 2 switch?
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Apr 12, 2012
I have a 4 port etherchannel configured to talk to a 4 port etherchannel on NETAPP server. The NETAPP server seems to be distributing traffic across all the links. The 4507 does not. It appears that traffic is going across only 2 of the for links. [code]
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Jun 11, 2013
I recently changed jobs and at the new location we are primarily running Catalyst 2960G series switches with the exception of one 3750. All of the switches are setup in a cluster with the 3750 being the cluster master. My question is what is the benefit of switch clustering? The entire network seems to be a bit over engineered for the our needs and I am hoping to scale it back a bit. For example, the the network was setup with VOIP QoS when there were no plans to even use VOIP. Also what procedures would I want to follow to disable the cluster to avoid any major outages? Assuming there is no real need for a cluster.
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Sep 7, 2012
We have two catalyst 6506 switches with 10 gb u plinks and around 120 edge switches cat 3750-x switches. Still the module on the core wheere servers are connected is 1000mbps port.Now if we induct a nexus switch to the datacenter what kinds of benefits we can reap In a virtulised environment as well as real environment?following are the some of the queries.Can we reduce the number of edge switches? ( by virtual environment), Inter operabaility between cat ios and nexus ios, how this will affect the environement,What will be the over all benefits ?, What are the cons of this induction ?
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May 6, 2013
i have set up a layer 2 tunnel on my 887va router and the traffic transmits accross this to my second 887va. unfortunately, I do not seem able to get the layer 2 traffic from my host PC and down the tunnel.
I believe the problem to be the router settings for the fastethernet aqnd forwarding this data out of the dialer port.
Here is my config:
Building configuration...
Current configuration : 3973 bytes
!
! Last configuration change at 13:03:15 UTC Thu May 2 2013
[Code].....
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Nov 15, 2011
link where to download user manual and/or Technical manual for Linksys RV042 Dual WAN VPN RouterDoes the Linksys RV042 Dual WAN VPN Router AGGREGATE the bandwidth of the two WAN Ports for LAN use or how does it operate?Does it manage traffic on Layer 7 (Application Layer);can i configure say, yahoo messenger traffic to take priority over youtube traffic or http traffic over download/upload traffic or such?Does it have DYNAMIC bandwidth allocation/management feature?Can i Guaranteed Bandwidth Allocation for a particular user or IP Address?Does it have TCP Ack Prioritization feature?Can i direct site(s) traffic,say cisco.com and/or port or service to use a particular WAN port?If this product cannot handle this features?
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May 1, 2012
I have a cisco Swtich SGH 300-20 Gigabit switch i configure 2 vlan one is default and one is vlan 10
Vlan 1 ip range 172.16.0.0/23
Vlan 10 ip range 172.16.2.0/24
Client on Vlan getting Proper IP from DHCP Server all i need is to distribute internet bandwidth we have 6/3 mb and i want to give 4/2 mb to vlan 1 and 2/1 mb to Vlan 10
Int Gi16 on switch is configured as trunk port and is connected to cisco 2811 router
what are the command used to distribute bandwidth between these 2 vlans
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Jan 13, 2013
I've created a scenario using a 3750 cisco as core switch ad other 6 switch model 2900 in access level.my problem is this, the router is not a cisco router, and this router is not able to make NAT on more than one subnet.Into the core switch I've created 4 VLAN and I must to give internet access to 3 of them, 192.168.0.0/24 (vlan1), 172.16.0.0/24 (vlan2), 172.17.0.0/24 (vlan3).I've connected the switch to router via gigabit ethernet 0/1 and I've assigned to this interface ip address 192.168.10.2, the router ip address is 192.168.10.1, Switch ip default-gateway is router ip address 192.168.10.1, ip default route is 0.0.0.0 0.0.0.0 192.168.10.1 I've enabled ip routing feature and I've set no switchport feature to interface gigabit ethernet 0/1.From core switch I can ping router ip address but I can't make it from all other user, and the users not able to have internet access.
Below the switch configuration (only necessary strings)
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
[code].....
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Jun 23, 2011
I am looking for a certified (e.g. by the ITU) traffic model for the OSI layer 3 & 4. (TCP/IP). If there are definitions for different kinds of traffic, like idle-traffic (protocol only), surfing, file-transfer and all these mixed up.The reason why i am looking for it is that i am actually working at my bachelor thesis and need to simulate network traffic and its behaviour in/at a router. In particular i want to simulate the RTO (retransmission timeout) of a router with "realistic" traffic.
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Dec 6, 2012
i want to to ask about redirecting in MLS 7600 .assume the user a has an ip x.x.x.xand that user requested url...i want to to redirect his request to url...the users that have to pay the monthly bills , i want to give thim an ips and redirect all the http requests from this to a special local webpage .is is applicable to to it on router cisco 7600 ??or is it applicable on router 7206 npeg2 ? also i have siwtch 2960g.i dont want to do it by proxy server.
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Jul 10, 2012
I want to configure layer 2 switched netflow on my cat 6509 running vss,
I have configured the 2 commands below
ip flow ingress layer2-switched vlan 1,2,3
ip flow export layer2-switched vlan 1,2,3
However, if I look in the config the export bit isnt there after?
It is running a PFC
VS-F6K-PFC3C
Should layer 2 switched netflow work in this chassis ? it says on the Cisco site that it works on the below
"The command is supported on Supervisor Engine 720 in PFC3B and PFC3BXL mode only and on Supervisor Engine 2 with a PFC2"
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Mar 10, 2011
Here is a second paragraph from official BCMSN book page 93:
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Jan 21, 2013
I work for a company that recently upgraded to a Cisco RVS4000 router in place of a failing D-Link router. I configured the RVS4000 to utilize the same address space as the D-Link previously did (192.168.0.0 Network Address, 255.255.255.0 Subnet Mask, RVS4000 in Gateway Mode with IP Address 192.168.0.1, DHCP Scope from 192.168.0.101 - 200 managed by the RVS4000) before installing it on the network. I powered down the D-Link as well as the cable modem, then all of the workstations in the office. Then, I installed the RVS4000, powered up the cable modem, and once it was ready, powered on the RVS4000.
When devices connect, the RVS4000 is assigning them an IP address in the 192.168.1.0/24 subnet, instead of the 192.168.0.0/24 subnet. I have verified that the RVS4000's GUI is showing the correct settings, but connected devices are not picking up addresses from the correct address pool. In troubleshooting, I went to each workstation, released and renewed their IP addresses, and they picked up addresses in the correct subnet. I thought everything was solved, but the next day, the same problem resurfaced.
I left the DHCP lease time at the defaul value "0", which according to the unit's documentation should correspond to a 24-hour lease period. I suspect this is why I had to renew the clients' IP addresses the next day (today), but I still don't get why the RVS4000 wants to give out addresses in the 192.168.1.0/24 scope. Could this be a holdover from the factory settings?
Additional Information: I did not set up any VLANs on the network and the office only requires one subnet as there are not a lot of devices connected, nor do we need the traffic segragated. The VPN functions of the RVS4000 work fine. Using the QuickVPN utility, I can access the network and resources on the network remotely without issue.
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Apr 30, 2012
I need a ≥ 8 port layer 3 managed switch. What would be the cheapest solution for this?I've been looking at some stuff like Cisco 4908G, but that only supports 1000base-X. I need something that supports the standard 1000base-T. I've also looked at a Cisco WS-C3508G-XL-EN, but correct me if I'm wrong, this is only layer 2?
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Apr 22, 2011
can i use normal two L3 Switch(3560) for BGP Multihoming with 2 different isp
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Mar 6, 2012
I'm looking to get a layer 3 managed switch. The HP we currently have only does layer 2.I'm looking at a HP v1910-24g. It has 24 10/100/1000 ports and looks to be layer 3 as well.It looks like they can be had for around $350.Anything different I should be looking at with similar specs? Any issues with the v1910-24g?
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May 5, 2012
I'm fairly new to networking but I've learned quite a bit on my own without being educated. I'm trying to just figure things out on my gear. So for my LAN party i'm going to need an internet connection. I'm not going to rely on my venues subnet though so i want to create a new /24 subnet(250 hosts is good for a start). I want my subnet to be able to speak to the outside network too.
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Mar 22, 2011
I am migrating an a group of workstations that run a fire system from one software to another. The current workstations run the following info:123.123.123.xxx 255.255.255.0The new workstations run:100.100.100.xxx 255.255.255.0There is a central switch location using a GE-DSG-244 Layer 2+ Managed switch. There are two remote location using GE-DS-82 Managed Switches.The two networks must remain isolated, yet use the same fiber communications. The central switch connects to the two location using MM Fiber. From my research I believe I need to use the 802.1q standard to allow port trunking between the two switches.
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Aug 24, 2011
I got one SF 300-48 layer 3 switch I tried to configure to use it in the office network.Unfortunately I'm unable to configure the VLAN settings.I need port one for input(VLAN2),port 7-15 for another vlan(vlan3) also need to connect with the vlan 4.port 15 is another vlan(vlan4) this is for wireless.Other ports are static.It doesn't get any connections with other vlans.I wish to know how to configure vlans in GUI mode.I tried , But I can't get the Vlan setting correctly.Also,I need to know how to communicate both vlans in GUI mode.
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May 23, 2011
I have 1 internet router 2960 and 2 No's ASA firewalls,The issue is Suppose if ASA-1 fails the failover will happen on ASA-2 but The issue is i dont have a layer 2 Switch in between the ASA's and Internet router, i have to manually shift the cable from ASA-1 to ASA-2,what sort of configuration i can do on 2960 router interfaces to support failover from ASA-1 to ASA-2, I have enough interface on 2960 router to occupy ASA-2. These all 3 devices should be in 1 Subnet.
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Apr 29, 2013
I created a lab and I have a few issues. One with a layer 3 switch and another with a ASA 5550.
1. Layer 3 switch: I have created multiple Vlans and I am able to route between them. I can ping the switch IP but not the default gateway to the ASA. I did a tracert of the default gateway of the ASA and once I am past the Vlan gateway it fails.
2. On the ASA 5550 I created the Vlans on sub-interfaces but still cannot get to the internet. ASA config is below the switch config.
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Aug 18, 2011
I'm looking at implementing a cisco 3550 Layer 3 switch and would like to know if i can forward ports down to all of my different Subnet Servers/Pc's.
For example. See attached image.10.0.3.5 is a mail server. 4.2.2.2 is our public IP.
I would like to forward TCP port 25 down to our Mail servers IP. Any reason this will not work by using the cisco 3550? Currently we have a flat network (1 subnet) and port forwarding works fine.
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Apr 13, 2013
I am tryingto add a new VLAN on my C3560E Layer 3 switch for administration purpose.My goal is to make this VLAN for administration only and to let the administrators from 172.17.1.1 connect to any host of the internal network 172.16.0.0 plus exit to the internet via the default gateway 172.16.1.245.
Here an extract of what done so far:
ip routing
spanning-tree mode pvst
spanning-tree extend system-id
vlan internal allocation policy ascending
!
interface GigabitEthernet0/1
[Code]...
What happened is that:
1. The host connected to Vlan30 can correctly ping the interface it is connected to.
2, The internal network can access the internet
3. The host connected to VLAN30 cannot access the internet and cannot connect to any internal server.
Do I have to add a static route? This is a production envuironment and it is my first experiment with a layer3 switching in production, so I cannot mistake
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Sep 25, 2012
I would like to ask if it is possibe to stack a 3Com 3cr17161-91 to a layer 3 Cisco Switch? The two will be stacked using the avaialble SFP modules.
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Feb 9, 2012
I can understand it 's one of those very basic questions , but how do I identify a Switch is Layer 2 or Layer 3 ?Looking through # show version command and checking the IOS version to be IP BASE or LAN BASE . Is it the right way ?Cisco 2960 is a Layer 2 or a Layer 3 Switch ? I noticed that access-lists could be configured which means that it 's a Layer 3 Switch , right?
[code]....
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Sep 5, 2012
My understanding is that even layer 2 switches like the Cisco 3500XL can have 1 IP address for management. However, I cannot seem to figure out how to configure it to get it working in a router on a stick setup. I can manage the router through SSH, but I cannot SSH to the switch.
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May 25, 2012
I have made a topology by using one 3560 switch and 2 2950 switches. I have also made 2 vlans name Clients and other Servers and vlan 1 is for anagement purposes. The left 2950 switch is for clients and the right is for servers. Clients is vlan 2 and servers is vlan3 . Now what i want is that my dhcp is should assign ips to clients in vlans 2 provided that servers are in vlan 3. I am also using a border router and i have introduced a default route on the 3560 to the border router.
Now when i assign static ips to my clients pc and server dhcp then i can ping between vlans but when i try to assign ip through dhcp then it wont work. Also the default route on the switch to the border router doesnt seem to work. I can ping only the border router when i put a default route on the border router instead of the 3560 switch.
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Oct 16, 2012
is it possible to run a Catalyst 4500 as pure Layer 2 Switch, i.e. disabling "ip routing", but still managing the switch via Fa1, i.e. the defautl mgmtVrf vrf ?I tried the following:
!
no ip routing
!
interface FastEthernet1
ip vrf forwarding mgmtVrf
ip address 192.168.1.1 255.255.255.0
!
ip route vrf mgmtVrf 0.0.0.0 0.0.0.0 192.168.1.254
ip default-gateway 192.168.1.254
I was not able to reach the Switch even from the same subnet. Only after enabling ip routing I could manage the Switch. I haven't found any command to set ip default-gateway for a vrf. Any workaround to keep routing disabled, but still manageable via VRF?
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May 7, 2012
Is it possible to establish a interface dialer on a layar 3 switch?Or is it only interface for routers?I have a c3750 switch (WS-C3750G-24T), and when i try to establish a dialer interface i get an error message:
[code]...
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Jan 24, 2013
I have been working on redesign of our network which was very challenging but almost there.We have a limited budget of around £20k(32k Dollor) Max. The cabling has been done before my time and it is very messy and cheap so you can not do a proper cisco hierarchical model at all.I can not have multiple links from each access layer switch to the core/distribution and as a result i had to connect some access switches together to introduces redundancy in a nutshell,we have two buildings, main building which has the server room in it and the other building which is just bunch of office. i have introduced a partial mesh on the normal building and have tried to introduce full mesh on the main building .
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Feb 4, 2011
I'm setting up a Cisco 3750 layer 3 switch with several vlans. I thought enabling routing would route between the vlans, but no such luck.What I want is to share the internet access of vlan 100 with the other vlans/ip-nets.How can I do that?
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Apr 12, 2013
Configuring OSPF on a catalyst 3560G Switch to connect to our building next door by way of fiber. The other two switches in the other building are running OSPF, I am trying to connect to the other building and access a server which is on a switch running OSPF. I am trying to configure the switch here to run OSPF and be able to see the neighbor, but currently can't although I've identified the networks. Maybe I'm missing something, I've followed the instructions but something is not right.
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Nov 29, 2012
RACK 1 is the old rack and NEW RACK is the rack which is going to be procurred for some new Servers. All the Servers in the RACK 1 has a default gateway as PIX Inside IP. As of now the 3560 Switches acts as Layer 2 and does not have L3 IP routing enabled. How can I enable conenctivity between 192.168.36.0 range and 192.168.57.0 range wihtout making any change to current PIX inside IP address 192.168.57.1?Is it possible that I can enable IP routing on the 3560 Switches , create interface VLAN 36 and since already Switch 2 has it 's default gateway as 192.168.57.1 , Would the traffic from 192.168.36.0 be routed to 192.168.57.1 ? Or do I need to create static route for that ?Since L3 Routing is not enabled and since the 3560 Switches are just acting as L2 , the VLAN 2 - 192.168.57.0 range does not have any interface VLAN configured. When it is changed I would need to create interface VLAN 2 on 3560 Switches?
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