Cisco Switching/Routing :: 3750x / 2960S - How To Setup InterVLan Configuration
Jul 6, 2012
I am trying to setup intervlan configuration and stuck on a problem. Here are the details:
1. Switches Catalyst 3750-x (as core switch) and Catalyst 2960S (as access switch)
2. Both switches have VLAN 20 and VLAN 1 on their database and both are active. BTW, after I figure out how to properly configure interVLAN routing the native VLAN 1 will not be used anymore. This is just an initial test.
3. VLAN 20 SVI interface (IP 192.168.20.200) on 3750 is up and can be pinged from catalyst 2960.
4. VLAN 1 SVI interface (IP 192.168.170.200) on 3750 is up and also can be pinged from Catalyst 2960.
5. Catalyst 3670 can ping a client computer (IP 192.168.20.10) connected to Catalyst 2960.
6. IP route enabled on 3750
7. Trunking is enabled on etherchannel connecting both 3750 and 2960
8. Client computer in VLAN 20 (connected to 2960) can ping VLAN 20 SVI interface 192.168.20.200 on switch 3560.But, the client computer in VLAN 20 can not reach any computer in VLAN 1 and vice versa. Strangely, the switches which these computers are connected to can ping each other or any connected client copmuters without any problem as described above.
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May 22, 2013
my company pay a switch 3750 X. WS-C3750X-24T-E. It uses IP services basically but I failed to configure InterVLAN routing. why interVLAN routing doesn't work on my switch?
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Apr 24, 2013
We are looking to replace some aging 3560 switches with 100Mb/s interfaces. They service IP phones and workstations.
For having IP phones directly connected to access switches that are also servicing workstations, we don't need L3 routing except in the core, so the question is what would we lose if we used 2960S switches for access switches.
I understand from having spoken with Cisco TAC that a limited subset of QoS is available on the 2960S platform. Does that includes the priority queue that is enabled when you turn on mls qos on a L3 switch?
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Sep 4, 2012
I need to know if is possible to do a LACP using 2 x 10GB between 3750X and 2960S (WS-C2960S-48LPD-L) switches.
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Oct 8, 2012
Has anything changed in the way of defaults for creating a trunk port and spanning-tree between a 3750x and the newer 2960s? I have one of each I just took out of the box and applied my standard switch configuration template but I cannot get my VLANs that are configured on my 3750X to appear on the 2960S. I find nothing that is blocking and everything seems to be forwarding and I am running out of things to check.
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Dec 20, 2012
Recently I'm working with my client to setup their network and he want me to limit user access internet bandwidth to 2 Mbps and the topology show below.Users ---> Switch ---> NAT Router ---> (int gi1/0/24 - qos apply) Edge Switch ---> INTERNET ROUTER (12Mbps) --->> INTERNET,This is my configuration, but it doesn't work, the end user still able to get more than 2Mbps internet speed.Access-list 100 permit ip any any dscp default,class-map match-all QoS_Floor_Limit, match access-group 100.
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Apr 22, 2013
my client to setup their network and he want me to limit user access internet bandwidth to 2 Mbps and the topology show below.
Users ---> Switch ---> NAT Router ---> (int gi1/0/24 - qos apply) Edge Switch ---> INTERNET ROUTER (12Mbps) --->> INTERNET
This is my configuration, but it doesn't work, the end user still able to get more than 2Mbps internet speed.
access-list 100 permit ip any any dscp default
class-map match-all QoS_Floor_Limit
match access-group 100
!
!
policy-map QoS_Floor_Limit
[Code]......
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May 9, 2013
Windows Server 2008 R2 has two DHCP scopes 192.168.1.x (for data) and 192.168.2.x (for VOIP). The Catalyst 2960-S has Vlan1 for the Data V LAN and V lan 2 for the VOIP network. How do I setup DHCP relay for Vlan2 to get their IPs from the scope on the Windows server?
Used to doing ip helper-address x.x.x.x in other Catalyst switches, but not available here.
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Jul 19, 2012
We currently have 7 Cisco 3524-XL switches (10-12+ yrs old) which are 10/100. We purchased a handful of Cisco 3750X switches to replace them going with the whole stackwise and redundant power supplies. Our current configuration on the old 3524 switches is that they have hardset all the ports on them to 100MB/FULL since devices would auto-neg to 100/Half. Since we're going from 10/100 to 10/100/1000 switches, I want things to auto-neg as I have heard in the past and experienced that things work better when it auto-neg to gigabit. My upper management is afraid since the old switches wouldn't auto-neg correctly that we should hard set all the ports on the new switches, which would be a nightmare since some ports would be hard set to 100/FULL others to 1000/FULL, etc.. We've tested just about all of our devices at auto with the switches and they've all auto-neg to the correct speed. In short, is Auto-Negotiation the way to go with the newer switches or is it still better practice to hard set your ports?
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Dec 10, 2012
I have a requirement whereby a CCTV system is being installed that will need multicast RTSP configured on the switch network. How this will be achievable on 3750X IP Services switches? if this is not possible then what switch hardware will be needed?
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May 15, 2012
I would like to know if there an specific configuration in order to apply QoS configuration in Switches 3750X for Polycoms Phones.I was reviewing the information from Cisco but mostly of them apply only for cisco phones, and just some or basic for non cisco phones.
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Jan 28, 2013
when enabling multicasting on layer 3 interfaces the CPU becomes fully utilized , is there any specific configuration should be enabled to reduce this .
Config :
Inetface vlan 100
ip pim sparse-dense
ip igmp version 3
[Code]......
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Jun 22, 2012
I have on 3750X stack with a few vlan
--------------------------------------------------
vvlansw06# sh vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/6, Gi1/0/10, Gi2/0/5
Gi2/0/6, Gi2/0/37
10 LAN_10 active Gi1/0/16, Gi1/0/17, Gi1/0/19
[code]....
where are the others vlan?
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Oct 24, 2012
I am installing a several new Cisco VM servers. The VM hosts are losing connectivity when we apply the etherchannel config in the core stack. VMware has stated that the etherchannel load balance needs to be src-dst-ip in order for the etherchannel to work.However, my current stack has 2 etherchannels configured to other switches through out the bldg in network closets. The current load balance configuration is src-mac.My question....when I make the change to src-dst-ip, will my network connectivity go down? I saw there was an older article on this that doesnt provide an answer just a work around. Here is the article. [URL].
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Jul 4, 2012
upgrading our small office network. We currently have about 75 employees with probably 125 devices on the network. I'd like to create about 10 vlans for the different departments and then configure intervlan routing as needed. Currently we have all unmanaged switches and it's just a huge broadcast storm on the network. We are upgrading our Cisco 800 router to an ASA5505 sec. Plus license. I need some recommendations on switches. Of course, this needs to be done as cheap as possible.... Is there a way to use the ASA to configure all the vlans and intervlan routing and access lists and use a cheaper switch to provide the access layer to hosts?
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Aug 5, 2012
I'm trying to configure intervlan routing between a cisco 2801 router and HP/Amer switches. Using int fa0/1 and subinterfaces I was sure I had it configured correctly, but I cannot ping the default gateways when I place a host in a particular vlan. Below is what I have configured.
HP switch - port 9 connects to fa0/1 on 2801
ip default-gateway 10.1.100.1
trunk 9 Trk1 trunk
trunk 10 Trk2 trunk - to another switch
[code].....
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Nov 21, 2012
I am using a 3750 as a default gateway for multiple Vlans on a few 2960 switches. The trunk lines are configured and working and I have assigned ip addresses to each of the Vlan interfaces on the 3750. My issue is that I can only ping the ip address on the Vlan interface of the 3750 if I have a working computer plugged directly into the Vlan on the 3750. I only have 3 vlans on the 3750 that have hosts directly connected (vlans 2, 10 and 40) the other vlans ( 20 and 70) don't have any clients plugged into them on the 3750 but the hosts reside on 2 different 2960s that connect via trunk ports. How do I keep the vlan interface on the 3750 switch pingable when I don't have hosts directly connected in that vlan on the 3750? (yes, I have enabled ip routing on the 3750)
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Apr 16, 2012
I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net. My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20,I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to (vlan2),my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to,go out to the internet.
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Dec 11, 2012
I implemented access list on cisco 3560 switch but it never works. I want to block access from network B to Network A and allow from Ato B
Network A. 10.0.12.0/24
Network B 10.0.24.0/24
The configuration is
interface Vlan1
description Data VLAN
[Code].....
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Sep 5, 2012
On cisco and am having some issues with intervlan routing. I have followed the vids and manuals but just can seem to get this working. I have the following network lab set up.
Vlan 10 = 10.70.1.9/24
Vlan 20 = 192.168.0.1/24
ME2400 firmware
ROM: Bootstrap program is ME340x boot loader
BOOTLDR: ME340x Boot Loader (ME340x-HBOOT-M) Version 12.2(35r)SE3, RELEASE SOFTWARE (fc1)
[Code]...
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Dec 9, 2012
Here is my current config, how to enable and setup NVI on a cisco 1941 router.i think it would fix my issue but i'm unclear on how to implement it to test.
i would like to be able to access an internal server from an outside address.
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Dec 2, 2011
I've been working with these two Cisco devices in my home off and on for several months now but I just can't take it anymore, I'm about to throw them away and go back to Linksys router.
I have a Cisco 2600 Router with only one Ethernet card in it so I have to trunk from my 3550 Switch to that device. I'd like to have my ISP and all users plug into switch and all trunk back to the router's sub interfaces. Currently, I have started over...again, and am unable to simply get the router and switch to ping each other if I put sub-interfaces on the router. See my configs:
2600 ROUTER:
Router#sho run
Building configuration...
Current configuration : 555 bytes
[code]......
3550 SWITCH:
Switch#sho run
Building configuration...
Current configuration : 2302 bytes
!
version 12.2
[code]..........
Port F0/24 is in VLAN 1, as are all ports but Port F0/1 which is my desktop PC. I mocked it up in Packet Tracer and it works just fine. This is just a simple setup and I'm making sure I can ping between switch and router before I move to each next step.
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Jan 22, 2012
I have a pair of 6500's setup with VSS and there is currently only one link between then. However one end of the link is on Po10 and the other end is on Po25. If I move the Po25 over to Po10, will things break? It seems to be working fine now. I'm about to add a second link and I'm concerned about the current configuration. It makes more sense to me to have both ends of the same link on the same port-channel ID. I've seen documentation which states otherwise however.
interface Port-channel10
no switchport
no ip address
[Code]....
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Oct 18, 2011
i have 2960 l2 switch connected to the ASA 5505. for some or the other reason i am not able to do intervlan communication. have done trunk mode on both ends on the switch as well as on the ASA and native vlan 1 allowed. the trunk is up up i am able to ping only the vlan 1 ip from the switch to the ASA for the vlan 2 i am not and similar for vlan 3.
config on the ASA
ASA Version 8.2(1)
!
hostname ciscoasa
[Code].....
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Feb 11, 2013
How do i enable InterVLAN MultiCasting. I have a WS-C3560G-24TS as my core switch and it does InterVLAN Routing. I have a Server VLAN (70) and Workstation VLAN (71). I have a server that i have set up to deploy images to computers. Up to this point i have only done one computer at a time, so unicasting was ok. I would like to be able to Multicast to multiple computers, but am unsure what i need to do on the switch (if anything) to enable this.
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Aug 29, 2012
We are trying to figure out how to configure this properly and so far we are stuck. We have a VMWare server with two different vmnics each on a different VLAN. We have each of these vmnics connected into their own switch port on a 3560G along with the appropriate VLAN membership for said ports. We have an additional port on this same switch in trunking mode connected to our firewall to a NIC that has an IP address in the respective VLAN networks. This port is also set for dot1q encapsulation. Each VLAN also has an IP set on the switch that is in the appropriate VLAN. We are having issues in this configuration getting the one VLAN to talk to another.
I know if we were in all Cisco mode then we would use ROAS to do this inter-vlan communication. How to make this happen short of changing hardware?
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Jan 4, 2012
I have a RVS4000 connected to my cable modem which I use as my gateway, the IP address of the RVS is 192.168.3.254
I have a 2811 with 3 subinterfaces of which I can ping all of them from my PC which at the minute is in VLAN 1, the only network that can connect to the outside world is VLAN 1, how can I enable the other 2 vlans to connect to the internet?
My set-up details are
Router
interface FastEthernet0/0.1
description *** Data Network***
encapsulation dot1Q 1 native
[Code]....
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Oct 28, 2012
I have recently split the voice vlan (10) from the data network (1), and am wondering why my catalysts and router do not require an interface Vlan10 statement. In the past I used OpenBSD boxes to do the routing, and I first needed to configure vlan 10 on the interface before I could get inter-vlan communication to work. With these Cisco devices it works, and I am wondering if it is because of VTP, for the fact that the ports maybe just pass all traffic, or is there some other explanation? Below is the setup, and firmware is up-to-date on all of the devices.
When I plug a phone into the POE SGE, the phone turns on, obtains an address on the proper subnet, and conversations are clear (whereas without the ip nat inside on the new subnet the calls had a lot of static). Possibly the reason that it works is because the phones properly create the tcp/ip packet, and it hops over the trunks and creates the states so that traffic routes back properly. I will install wireshark to see exactly what is going on, but is there a simple explanation that I am overlooking?
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Mar 23, 2013
I need to enable multicast routing on 2960s but the command "ip multicast-routing" isn't available on my release (12.2.(55)).
From which release this command is available?
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Oct 8, 2012
I have C2960S-48FPS-L and C2960S-24TS-S both of them are using C2960S-UNVERSALK9-M image with version 15.0(2)SE on both I run "mls qos"
and on 48FPS-L I run "mls qos map cos-dscp..."on 24TS-S I cannot run it. there is no such command. there is just "mls qos rewrite..." and "mls qos srr-queue..." variants.
I thought that one image give the same set of commands...?
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Jan 17, 2012
while i am configuring a port on switch .The switch reloads.After reload the show version says,System returned to ROM by bus error at PC 0x458F6C, address 0x0,show version from the effected switch is,Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(58)SE2, RELEASE SOFTWARE (fc1).
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Dec 8, 2011
I am currently having an issue with connecting a Catalyst 2960-S switch to a Small Business SG300 switch. When I connect them they are unable to form a link. When I do a show spanning-tree it says the mst link is in dispute.
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Mar 25, 2012
I read some papers about QoS. The thing is that I have to implement 30 switches with QoS to connect to a lot of Cisco IP phones. The switches are Cisco 2960S with code image "C2960S Software (C2960S-UNIVERSALK9-M), Version 12.2(55)SE3". Should I use autoQoS feature or manually configure them?. How should I treat uplinks between access switchs and core/distribution? I have a lot of doubts regarding queueing, because all the info I had read its for another model/image.
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