Cisco WAN :: Sup720-10G 6509 - Multicasting In Same Vlan Broken

Oct 9, 2011

Currently we do not have multicat routing enabled on either of our 2x Sup720-10G 6509 Switches.  We have no intention of doing so either.  I am looking for clarification on how mutlicasting operates within a Vlan. 
IOS: s72033-ipservicesk9_wan-mz.122-33.SXH2a.bin
Our Vlan has IGMP snooping enabled.  Here is the output.
6509Switch#sh ip igmp inter vlan 25
Vlan25 is up, line protocol is up
  Internet address is
  IGMP is disabled on interface
we do not want to disable IGMP due to this one concern that I can't find documented. If we disable IGMP snooping on the vlan, what happens to multicast packets with a TTL > 1.  Do they get flooded to the entire switch and all Vlans?  Or does it stay within the Vlan? 

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Cisco Application :: 6509-E SUP720 And SLB Limitations?

Mar 21, 2012

We are looking into replacing our current Windows NLB configuration with a SLB solution as NLB creates some nasty multicast traffic.
We are currently curious about the limitations for running SLB without a dedicated ACE Module, will it handle line-rate speed (1 and 10 gbit) with SLB?
Does VSS introduce any limitations for SLB? Any other pitfalls/limitations we should be aware of?
Hardware info: 2x WS-C6509-E in VSS with VS-S720-10G (VS-F6K-PFC3C) running s72033-ipservicesk9_wan-mz.122-33.SXI7

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Cisco WAN :: Cat 6500 IOS Upgrade - Installing Secondary SUP720 In 6509-E

Nov 21, 2011

I will be installing a secondary SUP720 in a 6509-E and will be upgrading the IOS on the existing SUP which is on  122-18.SXF6. I've read that this release has passed End of Critical Maintenance earlier this you. I thinking of upgrading the IOS to 12.2.33-SXJ1(ED) or 12.2.33-SXI8(ED) (possible more stable), but i'm not sure if i need any step upgrades from the current version. The SUP meets the required hardware specs and I will also be upgrading the ROMMON to 12.2(17r)SX7 first.
I have alot of experience upgrading IOS on routers and switches, but i just need to now if there are any gotchas that i need to know for the upgrade on the SUP.
The other issue is i don't believe the current IOS has been installed, are there any issue running on an IOS not installed. Patching is not available since the system is not running from an installed image. To install please use the "install file" command.

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Cisco Switching/Routing :: 6509 - Maximum ARP Entries On Sup720?

Jan 13, 2008

Just a very quick one.  Is there any physical limitation to how many ARP entries a 6509 and sup720 can have?

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Cisco Switching/Routing :: Is WS-SUP720-BASE Supported In 6509-E Chassis

Nov 29, 2010

I have a heck of a time finding this kind of information on the cisco site...Is the WS-SUP720-BASE line card a fully supported module in the 6509-E chassis?

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Cisco Switching/Routing :: 6509 - Upgrade Sup720 To Sup2T In VSS Cluster

Jun 21, 2012

I support an active VSS cluster using 2 x 6509E chassis with single Supervisor 3C modules in each chassis. I want to replace these with Supervisor 2T modules. All my service modules and line cards are supported with the Sup2Ts (I will also be implementing 6908 modules). Is there a document on the Cisco site for this? I haven't found one though I can find plenty that describe how to do a software upgrade.
(Note, I have a 3rd (non VSS) 6509E chassis that is also part of this core network and that will maintain VTP/V LAN's etc).

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Cisco WAN :: Upgrade Sup720 6509 Chassis - Configure Sup2T Management Ports?

Jul 1, 2012

We've just invested in a pair of Sup2Ts to upgrade a Sup720 6509 chassis but I'm unsure exactly how the management port(s), aka the Connectivity Management Processor (CMP), should be configured (and patched) in a dual supervisor system?Is each CMP an independent entity or is the management interface configuration (IP address, gateway, etc) replicated between supervisors?If it's the latter then do both management ports need to be physically connected at the same time?

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Cisco Switching/Routing :: 6509 Redundant Sup720 - Slave Boots Into ROMmon

Oct 24, 2012

I'm fairly new to networking and need to migrate an old core to a new core. I have a 6509-e Switch that I had an RMA on one of my 720 sup cards. After receiving the sup card I swapped my slave out with the new one, expecting it to boot into ios. It booted into Roman. I tried to boot the image manually and it did the same thing. I also tried to boot from my flash and, again, booted into ROMmon.
Question: If i configure and change the boot to boot from image it tells me i need to reset or power cycle first. Will this reset the entire switch? As this is production I'd rather not.
I am at home now, but I can supply any logs/hardware model/configs tomorrow. I thought I would see if this is an easy fix.

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Cisco Switching/Routing :: 6509 SUP720-3B / Dual Link With Failover And Redundant Configuration?

Feb 24, 2013

I have a two fiber connection from our Central Office(6513) to Remote office (6509). I have a requirement that on the remote office if one of the fiber goes down, the second fiber should work as a failover. I am planning to use SUP720-3B SFP to connect to the CO.

Can I connet one fiber to Sup720-3b G5/1 & another fiber connection to G5/2?  or Can I connet one fiber to Sup720-3b G5/1 & another fiber connection to G6/2? I am running EIGRP between sites. Any sample config.

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Cisco Firewall :: 6509 / FWSM VLAN Configuration Mismatch And Some VLAN Deleted

Aug 12, 2012

We  have 6509 VSS with FWSM Module and we have created two context on it, one is INTERNALL CONTEXT othe is EXTERNALL Context? We have spanned various VLANS in switches and FWSM context level.  All VLAN Gateways are configured in context level.
Activity description : We had planned migration of these devices into a new Datacenter, it was a planned activity. During  migration of devices from one Dc to a new DC  we broke the VSS and kept the primary running and removed the secondary switch and migrated this secondary to new DC  and powered this device ON in the new DC and checked all the config was very much fine but this device was OFF network as secondary was brought to new DC just to limit the downtime during the primary switch movement.
During the activity ( Primary switch movement )We powered off the Primary switch  and mean time before shifting into new Data center  We had brought up secondary switch which was already existing in the DC was put live in the network and it was working fine without any issues.
Later  we had moved  Primary into new data center and tried to put into VSS with the secondary , during this period the secondary device into went into RECOVERY MODE  and  primary device was not responding and devices  went off network and immediatly we  removed the VSL link and brought up  primary into production network without secondary online in the network ( Without VSS just stand alone switch ) network started working, but bringing up the primary we found that some of the VLANS in the FWSM was deleted and some VLAN had misconfiguration ( example : say original  VLAN  ip has become  10.300.13.1 ) also some of the access list as well as SVI was deleted making configuration mismatch.
Wanted to know while syncronization b/n primary and secondary switch in VSS if we pull out VSL link would create this type of issues.

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Cisco WAN :: 6509 Match Vlan Is Not Supported For Interface

Mar 13, 2013

I have a 10Mbps connection link which I will like to reduce to 5Mbps on a 6509 switch as indicated in the config below. [code] After applying the service policy on the vlan interface, i got this "match vlan is not supported for this interface". I actually tried the rate limit command but I cant see the effect using the speedtest.

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Cisco WAN :: 6509 - Connecting To Other Switch Using VLAN 1002

Feb 19, 2012

Are there any solution to connect VLAN 1002 configured in non-cisco switch to connect to Catalyst 6509?

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Cisco Switching/Routing :: How To Backup VLAN DAT On 6509

Feb 5, 2013

We backup the running config on the 6509 does it also backup the vlan.dat as well?I tried command dir/all and just dir but did not see the vlan.dat listed

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Cisco Switching/Routing :: 6509 - How To Configure New VLan

Nov 1, 2011

I have a Cisco 6509 connected (gig3/17) to a Cisco 3560 G switch (Gig 0/28).  The 3560 switch Gig 0/26)is connected to a distribution switch on another network.  The ip address on my 6500 is and the ip address on my 3560 is  The ip address given to me by the other network is  How do I configure the new vlan in this situation and the ip address given to me.

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Cisco Switching/Routing :: 6509 Vlan Configuration Missing?

Jun 17, 2012

After a abrupt power cylce of 6509 switch, vlan configuration got missing. Switch has not crashed.

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Cisco WAN :: Rate Limiting Configuration On Vlan Interface On 6509?

Feb 10, 2011

I have used the following basic configuration to do rate limiting on a vlan interface on a 6509:
access-list 100 permit ip any any
 class-map match-all ratelimit
  match access-group 100
 policy-map ratelimit-10Mb
  class ratelimit
   police 10000000 428750    conform-action transmit     exceed-action drop

How do I combine the two correctly to give me a vlan port rate limited at 10Mb up and down, but still setting aside (dynamically) 2Mb for voice?

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Cisco Firewall :: 6509 Core Switch - How To Create DMZ Vlan

Oct 31, 2012

I need to create a DMZ Vlan.  Core switch is a 6509.  FW is an ASA5520.  Need to create a VLAN for DMZ purposes for outside facing servers.  NAT is used on ASA.

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Cisco Switching/Routing :: STP 6509-E On Vlan 1 In A Heterogeneous Network

Aug 15, 2012

we have an heterogeneous network with Cisco devices (6509-E, 3750G and 3560) and Alcatel 6850 devices. We have to enable a PTP Wifi line as a backup for the fiber line between two buildings. For this purpose, we have connected a wifi device to GigabitEthernet 0/47 of SWIHGJ1 and configured it as: [code]

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Cisco Switching/Routing :: 6509 Vlan Flapping Between Port-channels

Mar 10, 2012

We have a pair Cisco 6509 switch in which 2 * 48 Port 1G line cards and 1 * 16 Port 10G line Card, FWSM and Sup 720 are installed.We have Cisco UCS and HP Blade servers.Cisco UCS servers are connected to Cisco 6509 switch using Fabric Interconnect, and HP Servers are directly connected to core switches.Recently the team made many changes in the network. Upgraded the IOS in Cisco 6509 switch, Configured Port profiling , MAC Pinning , HBA Cards to UCS / Nexus 1000V Infrastructure. After this change they lost the connectivity to UCS and HP Serers. Every tower is checking at their end.
The Network Team has reverted back the core switch with old IOS , but still the problem persisit.I could only see the following error log in the core switch. There are two port-channels one between core 1 and core 2. The other is between core switch and FWSM module. [code]

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Cisco Switching/Routing :: Setup VLan Between 6509 And 2621 Router?

Oct 25, 2011

I need to setup a vlan between the 6509 and 2621 router. This needs to be a VLAN (200) the runs between the devices that uses DOT1Q trunking. The end result is all the networks (vlans)  on the 6509 can talk to the LAN on the 2600 ( / 23) and visa versa.
Device 1
6509 with CatOS / IOS
Config I did on the MSFC:
Interface Vlan 200
ip address


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Cisco :: Core Switch 6509 - Route Each Vlan To Exit From Spacific DSL

Jan 26, 2012

i'm already has one internet connection is connecting directly to the Core Switch 6509,Vlan 500 (1921.168.1.0) and the Switch is route any internet request with default route:
SW6509-conf)# ip route is --> Next hop for the DSL router internal IP, and it's working fine.
The Problem: We have a new internet connection with new Vlan 600 ( another ISP/ with another DSL router, so i need your kindly support and suggest how to connect both of them to exit from the Core Switch 6509. is it ok if i make another default route to the Next hop to the new DSL router as:
SW6509-conf)# ip route is --> Next hop for the new DSL router internal IP.
is there any way like default route , route-map or any other features to :

route Vlan 500 ( to exit from DSL 1 -->
route Vlan 600 ( to exit from DSL 2 -->

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Cisco LAN :: 6509-e Switch And IDF Closets Have 3750 - Creating Isolated VLan

May 6, 2012

My core switch is a 6509-e and my IDF closets have 3750's.I have a couple of vlans currently setup, that can communicate with each other.VTP is setup Client/Server where as my core is Server, all IDF's are Client.
What i'm trying to do is create an isolated VLAN.  I want to setup a DHCP scope and use helper address.  When i plug in a client to that VLAN, i want it to get an IP, but not have any other network access.
Is this possible to do without switching to Transparent mode? If not - what reprocussions will i see by switching to transparent mode?

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Cisco Switching/Routing :: Set Port Vlan On 6509 Running In Vtp Client Mode

Jan 14, 2013

I'm working at a company that has several 6509 switches running CatOS.  They have two of the 6509's running in vtp server mode and the rest as clients.  I set up a new vlan from one of the vtp servers and it propagated out.  The problem comes when I try to assign a port on one of the vtp clients to this new vlan.  It gives me an error that the switch must be in vtp server mode to add/delete vlans.  I'm not trying to add/or delete a vlan just trying to add a port into an existing vlan.  I'm hesitant to put the switch in vtp server mode.  Is this a CatOS thing or is there a specific command to accomplish this?             

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Cisco Switching/Routing :: 6509 - Can't Change Native Vlan On Trunk Port?

Jun 6, 2012

I have several closets with Cisco 3560 on the edge that I'd like to change the vlan that's used for the management vlan on each. In the core I have a Cisco 6509 with Sup720's.
I'd like to do this by changing the native vlan on the trunk port on the core 6509 interface that connects to the 3560. and leave the management vlan on the 3560 as vlan 1.
Seems trivial but what I tried didn't work and I didn't have the window to troubleshoot. I'll paste the simplified configs for  the interfaces  below
6509 configs:
interface Vlan50ip address!interface FastEthernet


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Cisco Switching/Routing :: Disable Administrative Native Vlan Tagging On 6509?

Dec 13, 2012

We have a problem with CDP packets on sent by our Cisco 6509's.  Unlike our other Cisco switches (4948G, 5020, etc.), the 6509 tags administrative traffic on the native vlan.  As a result the CDP packets are sent with an 802.1Q header with a tag of 1.  The other switches send the CDP packets untagged on the native vlan.  This causes problems because we have non-Cisco devices in our lab that also receive and send CDP, but they do not process the packets that are tagged by the 6509.  They see the packets from the 4948 and 5020 just fine.
How can I disable the administrative native vlan tagging on the 6509?  Here is the current setup:
nwkdev-6509-1#show vlan dot1q tag native
dot1q native vlan tagging is disabled globally
nwkdev-6509-1#show interfaces gigabitEthernet 1/9/1 switchport


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Cisco Switching/Routing :: Net-flow Not Reporting Egress Traffic On 6509 Vlan

Nov 27, 2011

We have a pair of 6509 working in a VSS configuration (IOS 12.2(33)SX5). The 6509s connect to a pair of ASAs (7.2 code) running in an Active/Standby setup. These ASAs in turn connect to routers going to remote sites. I have configured Netflow on the following VLANS,
VLAN 10 - Servers Vlan
VLAN 9 - Transit/ASA VLAN (connects ASAs to 6509s). All traffic originating from any VLAN on the 6509 crosses this VLAN in order to reach remote sites and vice versa
I configured the netflow source VLAN 11 although I am not collecing any netflow from it.Although I have been getting lots of Netflow info, I noticed that netflow for traffic originating from any user VLAN on the 6509s going to any remote site via TRANSIT/ASA VLAN(9) does not get reported, I even tested with 4 GB traffic but no result. Only reverse traffic (i.e. from remote site to user VLAN) is reported as it traverses the Transit VLAN (9).
I read somewhere that egress netflow is not supported in 6500, but isnt traffic originating from a user vlan to a remote site via the transit VLAN (9) considered ingress with respect to the transit VLAN (9)? I would like to know whether bidirectional Netflow is supported on 6500 VLANS. I have mimimum control on routers beyond the ASAs, and since these ASAs run 7.2 code netflow is not supported, and Monitoring this Transit Vlan gives me extremely useful info.
I do get netflow biderectional traffic from the Server Vlan 10, but I think it is correlated by the netflow collector from vlans 9 and 10. [code]

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Cisco Firewall :: 6509 / Interface VLAN Stop Responding On FWSM Automatically

Aug 8, 2012

i  have been facing strange issue on FWSM (6509 switch). we have created a  vlan inteface for  server farm on fwsm and its stop responding  automatically and we need to give shut/ no shut command under that  interface to back into normal .

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Cisco Switching/Routing :: Slow File Transfer Speed In Same Vlan Of 6509 Switch

Mar 16, 2013

I am getting very slow window file transfer speed (4 Mbps per second) between two connecting servers in Cisco 6509 switch. I have connect the two laptops in 6509 switch in same module using the same vlan and try to copy the files from one laptop to another and vice versa and got the same speed on 4 to 5 Mbps per second. Switch utilization is not more than 10% and both the laptops are connected in 1 Gbps full duplex.
I have checked by removing the gateway in both laptop but the output is same.

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Cisco Switching/Routing :: 6509 - 802.1x And Voice VLAN / Enable Dot1x On User's Ports On The Switch

Sep 17, 2012

I have a Cisco 6509 with IOS "s222-ipservicesk9_wan-mz.122-18.SXF16.bin"I need to enable dot1x on user's ports on the switch. each user is connected to the switch through the IP phone.
I just found out that I can not enabled dot1x on trunk port. I have tried to use "switchport voice vlan " but I got:
Switch(config-if)#switchport voice vlan 123
Command rejected: Gi7/20 is Dot1x enabled port.
let me know what should I do to get dot1x working?
Note: I have connected a laptop directly to the port and dot1x is working fine.

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Cisco Switches :: Nexus 5K Multicasting

Mar 24, 2013

We have configured multicasting for our Nexus 5K switches. and for the most part everything seems to be working until recently.
Setup is we have 2 Nexus 5k switches connected via Dark FIber from Site A to Site B. Site A is sending the multicast traffc and Site B is receiving it.

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Slow Multicasting On Cisco 3560G

Feb 17, 2011

I am not a network person, but I am not sure our Network Team is qualified either. For a long time we have been using a dying Cisco 2950 100/MB switch for imaging our computers using GhostCast. Multicasting on the 2950 was never an issue other than it was flooding the switch and making all the other ports unusable. But at least the multicast portion was imaging with decent times. We had two Intel Pro NICs teamed to get 200 MB/s and a typical multicast session was about 6.5 minutes. When using only 1 NIC, it takes about 8.5. Running two concurrent unicast or multicast sessions, well that is a different story. It then triples or quadruples the time.

Now we have a 3560G setup. A single session takes a little over 3 minutes. If we multicast off of this switch, the time is about 12.5 minutes. That is 4 minutes longer than the 2950! If I run 3 concurrent unicast sessions, it takes all of them between 3.5 to 4 minutes. So obviously there is an issue with multicasting.

The switch is in a lab separate from the production network. The server with our ghost images is plugged directly into the switch and so are the computers we are imaging. From what I was told from the Network Team is that IGMP snooping is on, but multicasting is off. He said that multicasting does not need to be turned on since all traffic is going through the local switch. Probably true since our old switch didn't have multicast turned on either, but it still imaged using multicast faster.

Below are some screen shots of the imaging. The first one is the 2950 using multicast to 3 laptops. The second one is the 3560 using multicast to 3 laptops. Finally is the 3560 using 3 unicast sessions to the same 3 laptops.

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Cisco WAN :: Multicasting Configurations On 3560 SW

Aug 22, 2011

Here is my basic network layout for multicasting for Syn-apps

Multicast Source-->3750 SW (add PIM SM-DM? Yes/No)-->3845 WAN Router (add PIM SM-DM? Yes/No)-->T1-->2821 (add PIM SM-DM? Yes/No)-->3560 SW (add PIM SM-DM? Yes/No)
OK, in this is it necessary to configure "IP Multicast-routing" on the switches? Do I configure PIM on all interfaces that will handle multicasting (router and switches?) If PIM is enabled on the 3750 do I need PIM configured between the 3845 and the 2821 ? Do I configure the Auto-RP on the 3750 or the 3845 ?

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Cisco Switching/Routing :: 6509 - Inhibit Vlan Routing

Nov 8, 2012

I would like to ask you if it's possibile to block routing between some Vlan for just once of them.
Maybe I can explain better:
I've got a Cisco 6509 with 4 configured vlan interfaces
Int Vlan 10
Int Vlan 20
Int Vlan 30
Int Vlan 40
Vlan "10" is the phone voip Vlan and it must not talk with the others Vlan. The others Vlan can comunicate normally except with Vlan "10".
Pratically Vlan "10" needs to be isolated from the others.
This equirement comes becouse Vlan 10 is wireless and has the WEP key encryption (very weak protocol). Some Phone couldn't support the WPA2 key and I need to avoid an unauthorized external client, cracking the WEP key and connecting to this WiFi, could have free access to the others Vlan.

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