Cisco Switching/Routing :: 2960 - Connecting Two Vlans To 1 ISP Router Interface
Dec 19, 2012
I have two Catalyst 2960 Series (48 port) switches with the newest Cisco IOS installed. There is also a Cisco 2600 Series Router which I can't manage because it's ISP managed.
Now the problem is as follows. I'd like to create two VLANs, one in the IP range 192.168.0.xxx and the other in the 192.168.1.xxx. Now the router has a gateway IP address 192.168.1.1 .
Would it be possible to somehow connect these two VLANs with the router so that these 2 VLANs can't see each other but they can ofcourse both contact the router and exit on the internet?
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Sep 26, 2012
How can i add two data vlans on cisco 2960 on one interfase? i have 3 mac adresses on one interfase: one PC, one ipphone and one XP virtual machine(VM). PC and VM are in one data vlan and phone is in voice vlan. i need to place the VM in another data vlan is it possible? if so could you give me a link or place information here.
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Feb 8, 2012
I have two switches, a 2960 (sw01) and a 2948 (sw02). The sw01 is trunking via dot1q on Gi0/24 to sw02 on 2/48. Why are VLANs 2-4 not active on sw02?
sw01#sh int Gi0/24 trunk
Port Mode Encapsulation Status Native vlan
Gi0/24 auto 802.1q trunking 1
Port Vlans allowed on trunk
Gi0/24 1-4094
[code].....
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Apr 30, 2012
I have a a hardware server running a VM hosting virtual servers which are all on different VLANs. My challenge now is to configure the switchport that the server is connected to, to see all the VLANs needed by this VM. The VM has an IP that is used for managing the server VMs which is on a different VLAN also.
My switch is a 2960 switch and it is presently trunked from the core switch.
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Nov 12, 2012
I am aware that private-vlans are not supported on edge switches like 2960 series - so my question is would it be possibel to ceate private vlans on say just the core switch which would be a 3570 or 4506 that supports private vlans and then just trunk these to the edge like normal vlans?what I need to achive is to have edge port not able to communicate to each other even across switches - which cannot be done using 'protected' port so need the private vlan feature?
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Nov 22, 2011
On a low-end switch like a 2960 the maximum VLANs is 255, as shown in the output of VTP status:
Maximum VLANs supported locally : 255
Number of existing VLANs : 245
When the VTP mode is changed to transparent, VLANs from the extended range can be added without increasing the number of existing VLANs - e.g. if I create VLANs 3000 - 4000 the number of existing VLANs is still listed as 245.
If MST is used to cut down on the number of spanning-tree instances - and assuming propagation of VLAN configuration via VTP is not required - is there any downside to using transparent-mode VTP to increase the number of available VLANs? It does feel like I'm cheating the maximum listed in the datasheet.
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Nov 11, 2012
I am aware that private-vlans are not supported on edge switches like 2960 series - so my question is would it be possibel to ceate private vlans on say just the core switch which would be a 3570 or 4506 that supports private vlans and then just trunk these to the edge like normal vlans?
what I need to achive is to have edge port not able to communicate to each other even across switches - which cannot be done using 'protected' port so need the private vlan feature
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Mar 7, 2012
I've just started a new job after a couple of years not touching cisco gear and been pitched in... My new employer has a network that's Juniper based. We've inherited a load of Cisco switches as part of the deal for hosting matches during the Rugby world cup (plus a load of Aruba wireless gear that promises to be my very own special millstone, but that's bye the bye.)
My task is to hang these catalyst 2960's onto our existing infrastructure via fibre connections.
On the Juniper switch, there are four vlans being pushed to the port the cisco's hooked into: Code...
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Nov 20, 2012
At one of my sites, I have a 100mbit TLS. For this connection to work properly, the port on my end needs to be setup for 100mbit, full duplex. When I connect the TLS to an interface on my Cisco 2821, configured at 100/full, it works perfectly. Now the confusing part, I'm trying to connect the TLS to a Catalyst 2960. I configure the necessary port for 100/full, and get 'notconnect' on that interface. I set the interface to auto/auto, and it negotiates at 100/half and causes collisions and packet loss.
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Dec 15, 2012
I have packet loss with QoS configured and I was wondering is it somehow connected with the QoS configured on the switch.The traffic is passing through fa0/19 and gi0/1 interfaces.
mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue input bandwidth 90 10
mls qos srr-queue input threshold 1 8 16
mls qos srr-queue input threshold 2 34 66
[code]...
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May 19, 2013
i noticed the "output drops" increasing in interface gi 1/0/1 in my switch 2960-S although the utilization of my interface is between 20% and 50 %
SW__A#sh interfaces gigabitEthernet 1/0/1
GigabitEthernet1/0/1 is up, line protocol is up (connected)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 93/255, rxload 3/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
[code]....
what is the cause of this issue ?
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Sep 17, 2012
When i connect two cisco 2960 series switchs via stright trough cable causes delay in transmission sw1 has vlans and having trunk port connected to router all vlans are able to access internet sw2 is connected to vlan5 on switch1 sw2 has factory default configuration computers on sw2 can access internet but I have low bandwith problem on sw2 there is transmission delay problem?
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Mar 10, 2013
I am planning on deploying a 2960 switch and will need to uplink it to a 4510 switch. There are 2 TenGig Ports available and I was thinking of uplinking one of them to the 1Gb SFP port on the 2960. Would this work?
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May 25, 2013
I need to connect 4 Floor Building with 4 Cisco 2960 - 48 ports switch each other and it needs to be through a fiber. So all PCs connected to each switch would reach the LAN/WAN from the other switch. (attached is the image here with)
I see that the 2960 has 2 SFP ports each port of each switch should connect each other or how?
My simple question is:
1. What cable / patch code I have to use = Single-mode or Multimode? ( distance for each switch will not more then 25 mts)
2. Do I have to use SFP or SFP+ module?
3. What kind of SFP/SFP+ module I have to use = Single-mode or Multimode?
4. What kind of connector should patch code have = LC / SC or ?
5. How to connect each switch with redundancy like ...each switch should be interconnected with each other or I have to choose Cisco 3750G which has more then 2 SFP ports (option#1 & opetion#2 = attached here with) =
Best practice for connecting cisco switches over fiber.
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May 21, 2012
I have a Cisco Catalyst 2960 series switch. When I connect another switch or a VMWare Esx server on one of the ports, the port blinks for few seconds and then goes off. When I connect a desktop or laptop or a windows server the ports stay led and I can access resources on the network. However, when connect another switch or a vmware esx server, the port is disabled.
What config in the switch can I check to make sure the ports stay on regardless when I connect a desktop / laptop, switch or vmware server?
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May 12, 2012
I have 4900M with X2-10G-LX4I need to have a link from it to 3560X GLC-SX-MM using MM Fiber Patch Cord.any configuration required in 4900M to change the speed of X2-10GB-LX4 to 1GB ?
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Oct 22, 2012
While I managed to connect to each router individually, I decided it was time to connect the routers together via serial; as I don't have any serial cables and need to buy some, what serial cables I need, as well as to ask whether I have the right cards in my router(s) that will allow me to do so.
I bought 3 1841 routers, and all have a 1 port serial WAN Interface Card (WIC 1-T); one router has 2 of these, and one router has a WIC-1B-S/T .. My question is, can I connect the routers with a serial cable via WIC 1-T, or do I need a 2-T
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Feb 7, 2012
I have an existing stack of 4 x 2960-S switches connected by stack cables.I would like to add another 2960-S switch to the stack but am unable to as the 2960-S will only allow 4 x 2960-S switches per stack.how I would add the 5th 2960-S switch to the existing stack of 4 x 2960-S switches.
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Feb 11, 2013
I have a 24 port 2960-S that is not communicating with a 2960-LST that it is directly connected to over fiber. The link is up on the LST but will not come up on the -S. What command should I use to bring up this link? I have tried no shut from the (Config-if)# prompt.
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Apr 26, 2012
just a simple question. Is it possible to use a nexus 5548 UP switch as a layer 3 router between different vlans on the switch without the layer 3 card ? Or is there no 5548 as a router with the layer 3 card ?
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May 12, 2012
I got a Cisco 2800 router and am planning to use FastEthernet 0/1 to trunk in 802.11Q VLAN's to cater for some of our radio links. speed and operation of the sub-interface that will be created. Or explain it here. We got a radio link that we want to trunk into this Cisco 2800 and it is suppose to be connecting at 100Mbps but currently operating at around 80Mbps. Reports shows that the max in and out traffic for this link this year till today is 25Mbps. Will it not fail teh CPU etc ?
interface FastEthernet0/1
no ip address
!
[Code]....
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Nov 6, 2012
due to upcoming changes to our network I'd like to be able to pass vlans across the FE ports of a Cisco 1841 router.1 port would go to a managed switch and then to local devices on different VLANs.the 2nd port would go upstream to a Cisco 3825 at a different location which would then connect to the internet.due to monitoring behind the Cisco3825 we would like all NAT to occur on the 3825.
what I would like to happen is this example device connected to port 7 on managed switch gets an IP (10.0.7.10) from the Cisco 1841 in VLAN 7 (10.0.7.0/24).traffic from that device goes to the switch, then in f0/1 on the 1841 and out f0/0 still with the same IP info, no NAT occuring.traffic is received on the 3825 port 0/1 and then NAT occurs and out port 0/0 to the internet.
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Aug 27, 2007
We have a customer that is relocating thier headquarters. They have a temporary requirement to bridge multiple vlans or a router T3 link to the new location as they cannot change the IP subnets. Setup is 3560 switch connecting to a 3845 then T3 to remote 3845 and 3560. I need to bridge multiple VLANs. I have seen a good example on how to do it over sonet but I don't see how to translate that to an HDLC or Frame Relay encapsulation for the T3 Link.
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Jun 1, 2012
I am trying to configure router on a stick with 2811 and 3750, but I just cannot get it to work - vlans are not getting propagated from 3750 to 2811: 3750:
Code...
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Feb 12, 2012
i want to create a trunk between 4507 & 3945E router & route two vlans from router 3945E
4507# vlan 99 & 51
# int vlan 99
# ip add 10.22.100.1/24
#int vlan 51
# ip add 10.22.103.1/24
[code].....
4507 version : IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSAL-M), Version 03.02.00.SG RELEASE SOFTWARE (fc4)
3945E: 15.1(2)T4 what I am missing?
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Aug 13, 2012
I need to bridge 2 subinterfaces; F0/0.301 and F0/0.302 on a single router.The router interfaces with a Cisco 2960 (LAYER-2) switch.QUESTION is, does a Cisco router support bridging on subinterfaces on the same physical interface?Currently this is NOT operational Spaiing-tree on F0/0.301 and F0/0.302 is down, switch side is forwarding for both Vlans.show ip interface brief shows up/down status of F0/0.301, F0/0.301 and BVI6 is down/down?
:
SETUP:
bridge irb
!
!
Interface F0/0
no ip address
[code]....
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Jul 23, 2012
we have cisco 2960 switch which is connected to a cisco 2811 router. flapping issue between these two devices??
The following actions i have taken, but no result.. I have changed cables. have set speed to 100 and duplex full on both the interfaces but the interfaces are showing up up still not getting connectivity. same i have to auto on both sides still no result what configurations should i set to resolve this issue...?
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Jul 5, 2012
I've recently purchased a Cisco catalyst 2960S-24TS-L & setup 3 V LANS 10 (no current IP),20 (192.168.2.1) and 30 (192.168.3.1) to reflect the router V LAN configuration & ip information. When connecting my PC to the switch to test connectivity on (2.1 & 3.1) I'm unable to connect to the the net but can successfully ping GW (int FE0.20 & FE0.30) 192.168.2.1 & 3.1.
The router is an Cisco 1801 & it seems this is where the configuration issue is but I'm unable to figure out how to complete the setup. It has been quite awhile since I've configured a Cisco router.
Ive never had this router connected to a switch so all router switch ports are in the default VLAN1 (192.168.1.2), with FE0 disabled. In trying to get the switch to communicate with the router I made the following router config modifications.
FE0 enabled with subinterfaces configured
FE0.10-currently no ip
FE0.20-192.168.2.1/27
FE0.30-192.168.3.1/27
I have two issues I want to resolve:
1) I do not know what additional steps are required to allow 2.1.& 3.1 V LANs to access the net.
2) I want to disable VLAN1 if possible & use the network IP for VLAN10 (192.168.1.0). I'm unsure how to do this as any change on VLAN1 immediately breaks router access and the router reconfiguration becomes more complicated with changes to the FW ACL etc.
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Sep 3, 2012
We have a DHCP SERVER implemented in a cisco router 2610.This router is connected to a switch cisco 2960 configured as DHCP SNOOPING. At the switch appear the next log message: [code] The ip address: 10.100.200.1 belongs to DHCP SERVER configured at router cisco 2610. What to do so these log messages does not appear any more? Do I need to do some configuration changes at some switch or router?
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May 1, 2012
I have a Cisco ASA 5505 and I have my internal and external interfaces configured but I currently cannot ping from the inside to an IP Address on the outside. I had this setup and working and I have another set of equirement that I am replacing that is working with my service provider so I know it is a configuration issue. When I ping 4.2.2.2 for example I get:
Destination host unreachable
Do I need to add a static route from my inside interface to my outside interfaces?
: Saved
:
ASA Version 8.2(5)
!
hostname pxasa
[Code].....
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Aug 7, 2011
I have a device that does ip audio on one mac address and managagement is on another mac address. Both of these mac addresses come from one NIC on the device. We need to split these two traffic paths into two different vlans.How can I program this switch to sperate the different traffic into two vlan's based on mac address on one interface?
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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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Jan 23, 2013
I have the following config using a Cisco 1921. I am trying to get devices on the the native VLAN to get internet access via the gateway x.x.x.73.Any thing being routed from the other Vlans 15/20/30 can get access, but nothing from an internal IP address. Is there something I am missing.
The Xs replace the same 3 octets for each interface.I am trying to route from VLANs 15/20/30 to see VLAN 5. I have tried a few things, in terms of adding extra ip routes, but can't get anything to work. Each of those Vlans have another router on the other side of them, which I have also tried adding ip routes too, but nothing. One of the routers (Vlan15 is a Draytek 2830). [code]
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