Cisco Switching/Routing :: What The Difference Between L2 Vs L3 VLAN

Dec 9, 2011

what the difference between L2 Vs L3 VLAN? in know in which situation i use L2 Vlans but i don't know that about L3 Vlan.

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Cisco Switching/Routing :: Difference Between Using Hsrp On Vlan And Physical Port On 3750 Switch

Nov 14, 2012

What the different between using hsrp on vlan interface and on physical port (routed port) on Cisco 3750 Switch? Wha the benefits?

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Cisco Switching/Routing :: 3560 Possible To Create Vlan Inside Transport Vlan?

Jan 10, 2012

Between our hosting and a customer we have an extended vlan, traveling on a fiber, between two cisco 3560 switches.The thing is, that we want to create one or more vlans inside that extended vlan, in some way if possible?

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Cisco Switching/Routing :: 3750 - Extending VLAN To Remote Switch That Already Has VLAN ID In Use

Jan 10, 2013

I have two networks at two sites with a dot1q trunk between the two L3 switches at both sites (no routers involved)
 
SITE A - Cisco 3750 L3 - VLAN ID 50
10.10.50.0/24
 
SITE B - Cisco 3750 L3 - VLAN ID 50
10.20.50.0/24
 
I would like to extend the SITE A VLAN to SITE B so that I can move hosts from SITE A to SITE B without needing to change their IP address but the vlan ID is already in use. Obviously the easy solution is to change the VLAN ID for one or other of the sites but both sites contain hosts that run 24/7. Is there a way to join two VLANs with different IDs together.So for example I create a new VLAN 60 at SITE B and associate it with VLAN 50 at SITE A.

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Cisco Switching/Routing :: Route Data From Vlan 10 To Vlan 20 On 2960s?

Mar 31, 2013

i need to solves this little problem on 2960S lan BASE but i dont know if it is possible.
 
Uplink port config for gi 1/0/28 is:
 
switchport mode trunk
switchport trunk alloved vlan 10,11
  
but on interface gi 1/0/1 i want to have data from vlan 10 tagged as VLAN 20.
At this time i have solved this issue very primitively
 
I have set up gi 1/0/2 as int mode acces, acces vlan 20 and i have connected gi 1/0/2 with gi 1/0/3 with eth cable. int gi 1/0/3 is switchpor mode acces, switchport acces vlan 10

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Cisco Switching/Routing :: 3750G / VLAN 1 Is The Only VLAN And Its Disabled

Sep 16, 2012

I have a 3750G switch in my production network that only has VLAN 1 on it. All ports are in a default state and VLAN 1 is disabled. The switch is passing traffic but shouldn't having the default VLAN shut down cause the ports not to pass traffic? If I start to create VLANs will that cause the switch to stop passing traffic?

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Cisco Switching/Routing :: L2tpv3 Vlan-to-vlan Tunnel On 890

Jun 13, 2011

I am trying to setup a L2tpv3 VLAN-to-VLAN tunnel.My setup has two Cisco 890 router with Cisco IOS Software version 15.0(1) M4. These routers are connected directly on FastEthernet port 8.
 
One linux machine is connected on FastEthernet port 0 on each router. The two linux machines are on same vlan. I am trying to establish a vlan-to-vlan tunnel between the routers and send traffic between the linux machines.
 
I followed the case study 11.4 from [URL] and configured the l2tp-class and pseudowire-class. However, the vlan interface configuration is different on 890 router.
 
I configured a vlan interface as follows.

(config)#vlan 200
 (config)# interface FastEthernet 0
#shutdown
#switchport access vlan 200
(config)# interface vlan 200
 
I don't see the 'xconnect' command in this context. What's wrong with my configuration? 

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Cisco Switching/Routing :: Low Bandwidth On 3750 From Vlan To Vlan?

Nov 20, 2012

We have a low bandwith (15-20 Mbit/s) to the ASA from our Client vlan. If i connect the Client to the same vlan as the ASA is, the bandwith (90 Mbit/s) is good.
 
Here are the Layer 3 Design:
 
Client     ->     vlan 2 - Switch - vlan 7     ->     vlan 1 - ASA 5505     ->     ISP
 
The Layer 2 Design:
 
Client     ->     Gig2/0/13 - Switch - Gig4/0/43     ->     Eth0/1 ASA5505     ->     ISP
 
IP Address:
Client: 172.16.2.10Vlan2: 172.16.2.1Vlan7: 172.16.7.1ASA: 172.16.7.2
  
I assuming the switch has a problem with routing ?It is a stacked Switch with following members:

switch 1 provision ws-c3750g-12sswitch 2 provision ws-c3750g-24tsswitch 3 provision ws-c3750g-24tsswitch 4 provision ws-c3750x-48
 
And we have following error message in the log from the switch:

%PLATFORM_UCAST-4-PREFIX: 

One or more specific prefixes could not be programmed into TCAM and are being covered by a less specific prefix, and the packets may be software forwarded I first get the idea that the switch is overloaded with router traffic. Thats why i assuming i have to check the sdm templates, but i'm not sure if this resolves the issue. 
 
Here are the relevant config:
 
ASA Interface on the Switch:

interface GigabitEthernet4/0/43description ASA-inside LANswitchport access vlan 7switchport mode accessspanning-tree portfast
 
Client Interface on the Switch:

interface GigabitEthernet3/0/1switchport access vlan 2switchport mode accessswitchport port-securityswitchport port-security aging time 2switchport port-security violation restrictswitchport port-security aging type inactivitymacro description cisco-desktopspanning-tree portfastspanning-tree bpduguard enable

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Cisco Switching/Routing :: Difference Between FTE-10G And SFP-10G-SR

Sep 29, 2010

explain me the difference between FTE-10G and SFP-10G-SR, being focus on an architecture Nexus.

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Cisco Switching/Routing :: Difference Between 851 And 881?

Nov 6, 2012

I found a 851 router and tried to build a ezvpn tunnel.  The issue I am running into now is that a 851 router can only have one vlan in its database.  I need two vlans to go into the EZvpn tunnel with using another device.  So can you tell me if a 881 router can have more than one vlan created on the router and can those vlans be assigned to a interface and can I create a svi for each of those vlans as well.

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Cisco Switching/Routing :: Difference Between SFP-10G-SR Or SFP-10G-LR?

Apr 10, 2012

what the difference betwen these two cards? SFP-10G-SR or SFP-10G-LR

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Cisco Switching/Routing :: Difference Between 6500 SXJ And SXI?

Nov 25, 2011

i would like to check out what's the difference between the naming convnetion for the 6500 IOS.
 
I read the data sheet to support my POC deployment to support NCS v.1 the 6500 IOS need to upgrade to 12.2 (33) SXI
 
Is it able to work if i using SXJ instead of SXI, with the same IOS version 12.2 (33)?

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Cisco Switching/Routing :: Difference Between 871W / 851 And FTP

Oct 10, 2012

I've acquired an 871W, because I'd like to use wireless, to replace my 851.  I Ft Pd the 851's configuration to my FTP server and then Ft Pd this to the 871W.  Save for the fact that this has a radio interface (currently shutdown), everything works save for FTP from the outside.  I can not even telnet to port 21 of any of the internal FT servers.  I can telnet to any other port (ssg, smtp, HTTP, https, etc.) but FTP will not pass.  What's the difference?

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Cisco Switching/Routing :: C3560E Difference Between Two Temperature

Mar 17, 2013

What is the difference between Operating temperatue & storage temperature of switch C3560E ?

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Cisco Switching/Routing :: Difference Between WS-X6148A-GE-TX And WS-X6148-GE-TX

Jun 6, 2012

What is the different between WS-X6148A-GE-TX and WS-X6148-GE-TX ? Currently, I can not use MTU command on X6148 but can on X6148A.This two cards installed in cat6509E.

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Cisco Switching/Routing :: Difference Between 3925 / 3925E And 3945

Jan 30, 2013

terms of Performance for 3925, 3925E and 3945.
 
didn't see much different between 3925 and 3925E except an additional port.

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Cisco Switching/Routing :: Difference Between Catalyst 3750e 48 And SF300-48p?

Apr 11, 2012

what is difference between Cisco catalyst 3750e 48 and SF300-48p.

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Cisco Switching/Routing :: Difference Between Stack 3750G And 3750X?

Jul 15, 2012

I have a cisco WS-C3750G-24TS with IOS flash :/ c3750-mz.122-ipservicesk9-25.SEB4.bin "
 
I purchased a new Cisco WS-C3750X-24 with the IOS flash :/ c3750e-universalk9-mz.150-1.SE/c3750e-universalk9-mz.150-1.SE.bin. ( NEW )
  
When i configured a stack between the two 3750,  the new switch restarted due the version mismatch (different IOS´s);
 
 We have two versions: 
 
WS-C3750G-24TS-ipservicesk9 flash :/ c3750-mz.122-25.SEB4.bin "
  
VS
 
WS-C3750X-24 flash :/ c3750e-universalk9-mz.150-1.SE/c3750e-universalk9-mz.150-1.SE.bin.
  
Is that possible to configure a stack between then?
 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Tenho  um cisco WS-C3750G-24TS com o IOS flash:/c3750-ipservicesk9-mz.1
22-25.SEB4.bin"
Adquiri  um novo cisco WS-C3750X-24 com o IOS flash:/c3750e-universalk9-mz.150-1.SE/c3750e-universalk9-mz.150-1.SE.bin.

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Cisco Switching/Routing :: Difference Between IP Base And Universal For 3750X Switches?

Apr 9, 2013

What is the difference between IP Base and Universal for 3750X switches?

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Cisco Switching/Routing :: Core 4506 / Difference Between Sup7 And Sup7L?

Aug 17, 2012

I will go to buy a core 4506 but I'm comfusing about the Sup engines and the Fiber module. What is the different between the Sup7 and Sup7L?in the fiber module that I will go to buy is it contain the SFP inside or I have to buy the SFP ( WS-X4612-SFP-E ). also what is the different between the SFP and GBIC?

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Cisco Switching/Routing :: WS-C2960-48TC-S / Difference Between Transceivers (GLC-SX-MM And MGBSX1)

Jan 29, 2013

Switch A is: WS-C2960-48TC-S
Switch B is: SG 300-10MP
 
Neither switch supports a similiar transceiver module.  We are looking at transceiver GLC-SX-MM for Switch A, and MGBSX1 for Switch B all the Layer-1 information (SX / wavelength, Multi Mode, etc.) I am able to find out about the two transceivers seems to match, so would there be any issue by having these 2 "different" transceivers at either end?

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Cisco Switching/Routing :: Difference Between Catalyst 3750-X And 4948-10GE?

Jun 6, 2011

I want to choose a pair of switches for our data center.What I need: 48 x 1GE access ports, 2 x 10GE uplink ports.Nice feature of 3750-X is stacking. So what features has 4948-10GE? Why I should prefer that switch?

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Cisco Switching/Routing :: Difference Between Auto Qos And Voip Trust With C2960S

Aug 1, 2012

Are there any differences between the autoqos commands on a WS-C2960S switches (or in any other series)? Follow the commands:
 
- auto qos trust
- auto qos voip trust
 
I was checking the documentation on this link:
 
URL

And couldn't find any great difference between the two commands, as far as I could see they'll set the Ingress and Egress queues the same way.
 
Are there any differences between those two commands (auto qos trust and auto qos voip trust)? If so, when should I use one and the other?

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Cisco Switching/Routing :: 2960 - Difference Between SDM Prefer Access And Default

Aug 22, 2012

What is the difference between  sdm prefer access & sdm prefer default & sdm prefer lanbase-routing? When do we use these options?

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Cisco Switching/Routing :: 6513 / Difference Between Supervisor Engine 720 Active And Hot Status?

Apr 19, 2013

In my 6513 switch chassis we have two Supervisor Engines 720 one is marked Active other as Hot. what is the diffrence in their mode as by name I suppose that Active one is currently in use and Hot one is in standby mode.They are showing in this manner.    
 
Module        Ports      Card Type
  7                 2          Supervisor Engine 720 (Active)     
  8                 2          Supervisor Engine 720 (Hot)

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Cisco Switching/Routing :: Difference Between Nexus And Usual Catalyst 3750 Switches

May 26, 2013

what is the difference between Cisco Nexus switches and the usual catalyst 3750 switches.I do understand the operating system in both these are different.
 
When will we suggest using Cisco nexus instead of usual Cisco switches? Also what interface does Cisco nexus like 5548 come with , is it both copper and fiber?

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Cisco Switching/Routing :: C3750X Stack / Difference Between LanBase And IPBase For ISCSI?

Dec 26, 2011

Cisco let us try a CISCO C3750X- 24T-S  Stack (2 switches)  ->> IpBase Sofware licence We've 2 Hyper-v 2008 R2 and one SAN Netapp FAS2040 connected via Iscsi.All was working well with this stacks.Hyper-V see Nas Iscsi interface without problem. Even with basic stack config (no Vlan, ect...).Then, after this test period, we bought a C3750X-24T-L stack (2 switches) to replace the stack lent by Cisco.This one is LanBase Software.
 
With this stack, hyper-v work very bad ! We've got a lot of Iscsi error in the eventvwr.I can't access luns.So, is there a difference between LanBase and IpBase for a iscsi use ?I put the 24T-S config on the 24T-L switch without pb. So config is the same on both stacks...Also i've got a "TestPortAsicLoopback" = "Failed" on the new stack...I've tried with other stack cables. Not better.

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SRW2048-K9-NA - Difference Between Port To Vlan Vs Vlan To Port?

Apr 5, 2011

I have this Cisco Switch: SRW2048-K9-NA. When I log into the Web GUI, I am provided the two options mentioned above for VLAN Management. I have fiddled with the two options and they seem identical to me. Is there really a difference, maybe better flexibility?

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Cisco Switching/Routing :: How To Migrate From Fixed Router To Vlan Routing On 4507

Feb 16, 2012

Any "best practices" or recommendations on how to migrate from a fixed router (3745) to vlan routing on Catalyst 4507 switches in order to minimize the disruption to the network.

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Cisco Switching/Routing :: Multiple VLAN Routing Tables For 3750 Catalyst

Oct 24, 2012

I have a network with a Catalyst 3750 as the main switch and then some Catalyst 2960 switches that are plugged in to that. I have a server running windows server 2008 with a couple of virtual machines running in Hyper-V. I created 4 VLANS listed below and gave the 3750 the following IP Address.I would like the 3750 to only be configurable from VLAN 40 but currently every VLAN can connect to it, I noticed in the standard web page settings there was a setting for "Management VLAN" but it was set to 1 and would not let me change it, I kinda assumed that was for the management port in the back.-Now the tricky part, I was trying to set up routing between the VLANs and so far I have only been able to get a sort of "all or nothing" routing to work. I can turn IP routing on and add two or more VLANs to the routing and it works fine. But what I was hoping to do is create a couple of "junction vlans" that would only route to one or two other vlans. For instance, I wanted to create a VLAN 100 that routed to VLAN 20 and 30 but nothing else. I also want to route VLAN 1 just to VLAN 30, and so on. I am able to do each one of the cases but only one, it seems like the switch only supports one "routing table" am I missing something or is this just a limitation of the switch?

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Cisco Switching/Routing :: Catalyst 3750 Multi-cast VLAN Routing

Oct 28, 2012

I have a network with several catalyst 2960 switches and one catalyst 3750. I have created two VLAN and set up the proper routing and everything is working fine there. I have a client/server application that used multicast in the initial start up for the client to determine available servers, the issue is one of my clients is on a different VLAN then the server. I am able to route the multicast using MVR as long as both the server and the client are plugged into the 3750 by creating a static route, making the server a source port and the client a receive port. Unfortunately I need the client and the server plugged in to different 2960s. My question is how do I establish multicast routing between the two and perferably do it dynamically (always route multicast traffic from one VLAN to another).

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Cisco Switching/Routing :: Does Catalyst 3550 Support Inter Vlan Routing

Jul 24, 2007

Does Catalyst 3550 switch support inter vlan routing ?

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Cisco Switching/Routing :: Inter VLAN Routing On N5548P Without L3 Daughter Cards

Jun 1, 2013

I have a DC topology based on 2 layers, access and aggregation, based on 2 pairs of N5548Ps, both without L3 Daugher Cards. My intent is to use the aggregation N5K pair as L3 inter VLAN layer, so I configured all the VLAN default GWs there. The 2 layers are interconnected via vPC, in a double-sided vPC topology for some N2Ks and some vSwitches. The point is that, despite connecitivity is working fairly ok, for some applications, like file transfer via either FTP or HTTP, between hosts in different VLANs, the performance is too poor. The file transfer starts ok, but after a while it becomes lower and lower. ICMP is working, but I can see some strange random behaviour, like having some packets taking more that 20 ms (sometimes 40 or more), whilst average is 2 ms.

I read through some articles saying that until you don´t have the L3 license (the one coming with L3 Daughter Cards) you can expect some weird behaviour on L3 level. Is that true?. What can I do apart of purchasing L3 Daughter Cards?. Can I enable L3 Basic license at the moment (I don´t need dynamic routing for now).
 
Here some excerpts of what I´m saying:
 
PING results:
10000 packets transmitted, 10000 packets received, 0.00% packet loss
round-trip min/avg/max = 0.809/2.496/57.559 ms
 System version: 5.0(3)N2(1)
 
License and features on the N5Ks:
 
switch# sho license usage
Feature                      Ins  Lic   Status Expiry Date Comments
Count
--------------------------------------------------------------------------------
FCOE_NPV_PKG                  No    -   Unused             -
FM_SERVER_PKG                 No    -   Unused             -
ENTERPRISE_PKG                No    -   Unused             -

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