Cisco Switching/Routing :: Configuring Netflow For Layer 2 Switched Traffic On Cat6509
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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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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Sep 5, 2012
I've been conducting research on configuring 3 distribution switches in my network which are Cisco Catalyst 4507's to communicate with our core over layer 3. Our core switch which is already configured at Layer 3 for intervlan routing is a Cisco Catalyst 6509.
I've got the configuration portion complete and all devices are able to communicate my only question is about QoS. Do I have to configure QoS at the layer 3 interfaces for voice, if so how is that completed. We have several vlans and separate the vlans for each building by voice and data. We only configure ports on the access switches with voice vlans for QoS and we use the auto qos option on these interfaces.
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Aug 6, 2012
I am aware that the 3750 switches are not able to support Netflows, so I have created a SPAN port and spanning traffic from a specific port. I would like to create a seperate VLAN and trunk the traffic from the SPAN port down to the 6509 switch and then capture all the traffic for that VLAN on the 6509.
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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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Mar 13, 2012
Any major difrrence between Netflow v/s Netflow-Lite?
I am trying to understand if Cisco 4948E can do the same job as Cisco 4500E or not and difference between Netflow v/s Netflow-Lite will work for me to select correct product.
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Nov 24, 2011
I currently have 2 Cat6509 switches with VSS Capable Sups. One of the switches has an extra 10Gig Lincard. Will VSS still work in this scenerio?/?
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Sep 8, 2011
I will be adding two WS-X6716-10GE cards in a CAT6509 soon, and will create 4 port channels with 3 ports each in the new cards, but I do have a few questions:
1 - I will be adding cards in slots 3 and 8, can I mix and bundle ports from both modules into a single etherchannel, I mean, like two ports in slot 3 and 1 port in slot 8 to create a PortChannel ?! Or can I only bundle ports in the same card/port-group in a Etherchannel using this WS-X6716-10GE card?
2 - Do I need to issue the hw-module slot x oversubscription port-group y command in order to be able to bundle ports in the Etherchannel I need to create ?! I will be using 4 Etherchannels (LACP) with 3 ports each, running in trunk mode. So I guess, I will be using something like:
int tengig 3/1
switchport mode trunk
switchport trunk encapsulation dot1q
logging event link-status
[Code] ....
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Nov 19, 2012
i have a 3560 connecting to a sp with limited bandwidth. i have one interface on the switch whose traffic i do not want to drop. i want this traffic to go into the high priority queue. i am not sure how this should be configured, but here is my best guess and my current qos configuration on the switch:
qos map cos-dscp 0 8 16 26 32 46 48 56
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 1 4 6 7
mls qos srr-queue output cos-map queue 2 threshold 2 3(code)
since cos 5 is mapped to dscp 46 then this traffic would go into the priority queue. is this correct ?
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Mar 18, 2012
I want to setup VLAN with the switches SG300 and SLM2024. What is the suggestion to connect these 2 switches. We have the Juniper net screen.
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Mar 20, 2013
Is it possible to configure more than one layer 3 interface for netflow on a 3845? I can't seem to do it. Is there something I am missing?
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Jun 12, 2012
I know that the ASR 1002 has 4 integrated ports but the problem that I am having is that I need two of those ports to emulate a L2 switched port. Is that doable?
If not than I need to purchase the following module below. Is that price really true?
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Sep 9, 2012
Im using 1131AG AP.Locally switched WLAN don't have problem.Authentication used: open/wpa-psk/wpa2-psk.Pinging the IP Address of the vWLC dynamic interface (WLAN-SSID Mapping) is ok, but with the gateway failed.
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Jan 12, 2011
I have a WS-C3560X-24P with this SW version 12.2(55)SE1. It has several L3 Vlan interfaces.How do I enable it to send Netflow traps?It does not support the ip flow-export commands.
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Mar 18, 2013
I have a SR520 just deployed at a remote site with Internet Access.
Working Environment:
Remote sites have SR520 with IPSEC VPN back to HQ and netflow v.5 works through the VPN back to our PRTG server.
Non-Working:
I cannot get Netflow data to our PRTG with this first SR520 implemented with Zone Base Security. I am not able to get my netflow traffic out. VPN is up and running. Internet is a dialer0 interface. I have a Kron job that does the copy run to tftp backup daily to the same PRTG server and it works fine.
Both my source interface and address on the TFTP command and the netflow commands are the same interfaces (VLAN75) and IP. The Destination ip is the same too (through the VPN tunnel).
Snipped:
flow exporter prtg
destination x.x.x.x
source Vlan75
[Code]....
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Feb 11, 2012
I am trying to figure out the Flexible Net-flow on Cat 4510R+E Switch running IOS-XE code. My Neflow flow software is manageengine 7.X. I am able to see the netflow interfaces but the traffic itself is not displayed. On the Switch I can see the netflow exporter statistics counter being incremented thereby confirming as being exported.
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Mar 17, 2013
I have a 370 with C3KX-NM-10G module & i want to enable NetFlow on it did the specified configs
Step 1 Flexible NetFlow Flow Recordsflow record miketestmatch datalink source-vlan-idmatch datalink dot1q prioritymatch datalink mac source-addressmatch datalink mac destination-addressmatch ipv4 versionmatch ipv4 tosmatch ipv4 ttlmatch ipv4 protocolmatch ipv4 source addressmatch ipv4 destination addressmatch transport source-portmatch transport destination-portmatch interface input physical snmpcollect interface output snmpcollect counter flowscollect counter bytescollect counter packetscollect timestamp sys-uptime firstcollect timestamp sys-uptime last flow record miketestegressmatch datalink destination-vlan-id match datalink dot1q priority match datalink mac source-address match datalink mac destination-address match ipv4 version match ipv4 tos match ipv4 ttl match ipv4 protocol match ipv4 source address match ipv4 destination address match transport source-port match transport destination-port match interface output physical snmp collect interface input snmp collect counter flows collect counter bytes collect counter packets collect timestamp sys-uptime first collect timestamp sys-uptime last Step 2 Flexible NetFlow Flow ExporterFlow exporter export-to-samplicatorDestination 10.1.1.8source Vlan1Transport udp 2055option interface-table timeout 60 Step 3 Flexible NetFlow Flow Monitors# Tie the Flow Monitor to the Flow Recordflow monitor mikektestrecord miketestexporter export-to-samplicatorcache timeout active 60flow monitor mikektestegressrecord miketestegressexporter export-to-samplicatorcache timeout active 60
& Applied it to g1/1/1 but without any luck , if netflow works on the
TenGigabitEthernet1/1/1 &
TenGigabitEthernet1/1/2
Only i have four switches stacked and nothing plugged to the
C3KX-NM-10G module
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Jul 23, 2012
router 7200 (12.2(33)SRE1)
two interfaces with traffic going through, placed in a Data-VRF
Another physical interface and loopback interface in the global routing-table.
ip flow ingress on all physical interfaces configured
It was running for at least a year: I was getting netflow packets on my analyzer from the box. Since a couple of weeks I get no netflow-packets anymore.debug ip flow export tells me "IPFLOW: Sending export pak to ... port 2055"
But the packet is not leaving the box. By setting up an ip sla monitor udp-echo I simulated some traffic (udp/2055) which is leaving the box.
[code]...
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May 8, 2013
I have 4506 with below sup, my requirement is to enable netfolw , but as i came to know that it is not supported in this sup, is there any additional option which can be explored to get the netflow working without replacing sup.
Card Type Model
-------------------------------------------------------------+-----------------------
Sup 6-E 10GE (X2), 1000BaseX (SFP) WS-X45-SUP6-E
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Apr 9, 2012
Ive tried to configure NetFlow on layer 2 without success. I configured the recondmonitorexporter like the configuration guide said. but still i dont receive any netflow traffic. I checked the firewall on the VM and it looks fine.
i have done the command under the ethernet interface :" layer2-switch flow monitor TEST input" - for layer2 input.
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Oct 23, 2011
Net flow on the Nexus 5596upI can't seem to find any information on the Nexus 5596 support of net flow. On Nexus 5596UP support of net flow ?
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Jul 24, 2011
It is understood that sub-50 ms ERPS convergence can be achieved with certain HW/SW combinations.
1) What are the platforms supported (and with what FW/SW) has this been tested ?any results that can be shared?
2) Link failure detection in GigE on Copper is slower compared to GigE over "pure" Fibre; so no sub-50ms would be possible with Copper ring ports.is sub-50ms convergence achievable with "combo SFP ports" ?
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Jan 17, 2013
My management has tasked me to give them a high level overview of the different switching we can choose for our new building.
This is what I know so far.4 Closets, each closet has 450 ports,One MDF room that is will contain one UCS Chassis and a Nimble iSCSI SAN.
I am working on the spreadsheet and it looks like this (Not totally filled):
2960s3560x3750x45064510Approx cost (Each, 48PORT, POE+, 10G uplink, Dual PS, IP BASE)
6K7K8K45K75KMax Capacity192432432192384Backplane speed206464520520ProLeast ExpensiveStackable to 9Stackable to 9ProDual PSDual PSDual PSDual PSDual PSProLayer 3 opt
Layer 3 optDual SupsDual SupsConExpensiveExpensiveConNo Dual PSConLayer 2 OnlyCannot stack more than 4
For the MDF I would like to use 2 Nexus 5548's with FEX's, and the layer 3 daughter board. For the IDF's I was thinking of two 4010's.
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Jan 13, 2012
Recently bring up a new Router connected to ISP A and the Netflow collector/server is located in different location and they are connected to ISP B. I have enabled snmp and netflow config on my router(2911) but not receiving the netflow packets are not reaching the server for due to some strange reason whereas other packets like ICMP for snmp are reaching the netflow collector.Finally,I created GRE tunnel between the two locations routers and set the route for the netflow collector/server to the tunnel other end IP. In this way the netflow traffic are reaching successfully to the server.
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Jun 15, 2012
We are setting up a test lab in our DMZ. The path to the internet is basically like this. Anything past the firewall is irrelevant. For this lab lets assume it is vlan 300.
LAB SW ---> DMZ-SW ---> ASA FW ---> INTERNET
LAB IP Range = 172.16.300.0 /24
GW = 172.16.300.1 (On FW int)
Trunked all the way through.
I have an int vlan set up on the LAB SW. It is being trunked to DMZ SW. DMZ trunks it to ASA FW where there is a failover with a redundant switch.On the ASA the interface 0/2 is a subinterface 0/2.300 being used as the default gateway.
I have DHCP running in a specific range on the LAB SW and do get an ip address when plugged in. I cannot ping the default gateway on the ASA FW.The GW is defined using default-router command for 172.16.300.1 i.e. default-router 172.16.300.1?
We are running ospf on the firewall. There appears to be a pattern with ospf and a similar subnet setup elsewhere. I was wondering based off of this info would configuring ospf for 172.16.300.0/24 allow me to ping the GW from a client on the LAB SW.Secondly. I trunked 300 on the DMZ SW but I didnt add the vlan to the configuration. i.e. conf t <enter> vlan 300 <enter> Does this really matter? Or is having the vlan in the configuration only pertain to access mode on interfaces?
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Nov 12, 2009
If a Supervisor 6-E will support NetFlow on a Catalyst 4507R-E?If not, what are my options for NetFlow on a 4507R-E?
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Nov 3, 2011
To enable netflow export on ASR1001, do i need the firewall feaure license or not ?Docs are not really clear, NBAR requires FW license, but i am unsure about Netflow?
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Feb 6, 2012
I am trying to use the following commands on the switch but it is not supported:
ip route-cache flow
ip flow-export destination
Attached is the output for show version and show module commands from the switch.
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Jun 4, 2012
It is possible to configure the IOS NetFlow 122-58.SE2 in a Catalyst 3560?
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Dec 25, 2011
I need to know if Cisco Switch 2960 support Netflow. If it doesn't, how do I configure the switch to enable Netflow?
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Oct 30, 2011
I have a 3750E stackable swtch and I need to configure neflow on it. Are there any IOS versions that support netflow on the 3750E? Is there any possible to configure netflow on a 3750E? I do not see any netflow commands available on the switch?
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Jun 4, 2013
We have Cisco Catalyst 6509-V-E VSS Switch with Sup2T und IOS Version 15.0(1)SY2. We are gettin input netflow information from the gi2/3/7 but not output ... I am not sure why it does not work.
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May 22, 2012
How to get a summary of netflow statistics on NX-OS? On IOS you could do sh ip cache flow which would show what I need? Can't find a similar command on the Nexus Platform.
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