Cisco Application :: 6509 - Apps Are Unable To Get Data

Nov 6, 2012

We have ACE module intergrated in cisco 6509 switch. We have performance issue for specific url while accessing through ACE, but it works normal when works with direct url.The users are getting error at middle of works , " applications are unable to get  data ". We have configured http-cookie sticky like below, [code]

We are using two rserver in serverfarm and enabled port-80 services.

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Cisco Application :: 4710 - Some Apps Are Not Running Through ACE

Apr 22, 2012

I configured ACE 4710  for HTTP traffic. All applications are running through real server. But when I run the same applications from virtual IP i.e through ACE. some applications are not running. Particularly applications having XML.
Is it ACE issue or Application issue. If it is ACE issue then how to troubleshot.

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Cisco :: 6509 WLC Should Not Be Placed On Data Center Segment

Jul 2, 2011

We are in middle of deploying WiSM2s on our network, from a design point of view i am confused on where to position the WiSM2s. We have 2 DCs and from best practice architecture view WLC should not be placed on the Data Center segment, but it seems that is the only option i have.
DCs host 6509s, i am planning to host 1 WiSM in each DC, all clients will be on seperate subnet. Do you foresee any issues with this deployment or any security issues? authentications are followed as per cisco recommendation, clients authenticated against AD through ACS so it is fairly secure. 

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Cisco Application :: ACE RST Packets With 6509

Aug 15, 2012

I have ACE10 Module in my switch core 6509, my context "Proxy" was criated for balance connections to Forefront TMG Servers, this balance needs original client IP Address connections end to end in the solution.
My problem is: The clients are complaining of slowness connection to the internet, i captured the traffic in the ace capture feature and i see some RST packets and severals checksum error packets in pcap file.
The topology is:
Vlan 80 is in L2 mode(no interface vlan in the switch core 6509, route occurs through the ace appliance).
The IP address is the gw for rservers.

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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 Application :: 6509 ACE Modules Reloaded

Jul 11, 2011

We had some issue with Datacentre ACE modules. Both primary and DR ACE modules got restarted in 16 hours difference. Unfortunately Syslog was not configured on the ACE and local logging got cleared after restart. The current IOS version is A2(3.2). The modules uptime was around 300 Days. Here is the log from 6509 switch during the restart. [code]

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Cisco WAN :: 6509 / System Detected CRC Error Rate On Port ASIC Data Bus Exceed Fatal Threshold

Dec 7, 2010

Recently I faced 1 issue in MLS 6509.MLS  had all Gig modules in slots 6,7,8 taking System detected CRC error rate on port ASIC data bus exceed fatal threshold, ("System detected CRC error rate on port ASIC data bus exceed fatal threshold".) causing the module reset by the SUP. After this active SUP causing it to failover the standby. This process was continuing every few minutes resulting in the SUPs on MLS rolling.what could be the issue for Sup rolling reset?

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Cisco Application :: 6509 - ACE Module In Bridge Mode?

May 16, 2011

We have a 6509 with an ACE module. For reasons I don't fully understand the ACE is running using a BVI in bridge mode. It has loads of secondary interfaces.


I can ping all of the IPs on the BVI, but only servers in Subnet 10.7.42/42 can ping out of the the layer 3 on the 6509. I have all the routes configured properly on the 6509 pointing to the ACE for these subnets. The question is though the config has been excepted, is there a limit to the number of secondary on a BVI. 

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Cisco Application :: 6509 Provide Access For Clients Over HTTPS

Jun 15, 2011

I have a ace board(Acsm) in my switch 6509.I need provide access for clients over https, my scenario looks like this post [URL] .But, i have only one interface, and need to configure nat for inbound clients, to access the server with ip address of the interface vlan of my ace(if i set ace gateway in a rserver, the ssl termination works). The Topology is: Client(https) -> Ace(Https) -> Ace(http) -> rserver (http). Need to configuring this nat? I  need that external clients arrive at the server with the ip of the same  network as him, he did not right back the packet to the default  gateway, but the origin of the same network as him, so that the  communication function successfully, end order.

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Cisco Application :: ACE 6509 In Routed Mode Design For Deployment

Sep 4, 2011

Current topology in network is such: web servers with content needing to be load balanced are in vlan 35 and these servers are directly connected to Core switch (two 6509 VSS) via 20 Gb EtherChannel. Vlan 35 also spans some other switches with other servers residing in this vlan. Additionally, there are dozens of another vlans (including external users) that need to communicate with web servers. IP addresses of these two web servers are: and accordingly with default gateway (SVI on Core switch). Currently these ip addresses are used by management and other purposes and need to be reachable for same purposes after configuring load balancing with ACEs - it is needed to have direct access to servers behind ACE. How I can do that using ACE in routed mode?

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Cisco Application :: 6509 - ACE Module Context On Bridged Mode

May 8, 2013

I am desiging a topology with two Cat 6509 and Two ACE Module, one ACE per Catalyst. I am thinking to  use bridge mode for the customer contexts, I would like to know if the Bridged mode is an Assymetric topology.
The server gateway is the ip address of the ACE or the Router?

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Cisco Application Networking :: Catalyst 6509 - ASN Traffic Ace10 Module

Aug 26, 2012

I trying configure ASN traffic load balance, but doesn't works.I have one Cisco Catalyst 6509 and onde Cisco Ace10 module, in my context "PanWEB" i have the interfaces above: [code] If i try to establish a telnet session(telnet 80) i see the SYN packet passing through the ACE and going to the real server, but, the server do not response the SYN packet. I done a capture in the server using wireshark and could see that the IP address of the destination is the VIP and not the rserver ip address , this is a problem? Why can not I have the SYN + ACK from the server?

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Cisco Switching/Routing :: 6509 ACE Application Control Engine Module

Oct 4, 2012

We are facing a strange issue, our ACE 20 got failed due to power issue , after RMA once we are installing ACE 20 to 6509 , the status LED is showing ORANGE . The sh module shows it as " Others " ... The IOS is same as it was previously in 6509 .

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Cisco VPN :: 5502 - NAT-T / Unable To Receive Data

Nov 21, 2011

I've got clients using the Cisco VPN Client (version, and an ASA 5520 set up as the endpoint.  99% of the time this works great, so I'm pretty confident with the config, but there is one specific user who is having a problem (although sometimes it works ok for him).  This user is connecting to the internet through a 3G dongle, and then trying to VPN in.  I can see the connection being established, RADIUS authenticating his credentials, and the tunnel being set up without issue.
No data seems to pass through the tunnel however.  Lots of packets are sent, but none are ever received back.  Looking at the VPN statistics on the client, I can see that Transparent Tunneling is inactive, so I'm presuming I've got a NAT issue somewhere.  The output of sh vpn-sessiondb remote seems to confirm this (user 1 is the problem user, user 2 works fine):
Username     : user1                  Index        : 1332
Assigned IP  :          Public IP    : xxxx
Protocol     : IKE IPsec
License      : IPsec
Encryption   : AES128 AES256          Hashing      : SHA1
Bytes Tx     : 0                      Bytes Rx     : 0
Group Policy : Tunnel-Group-1
Tunnel Group : Tunnel-Group-1
Login Time   : 06:18:57 UTC Tue Nov 22 2011
Duration     : 0h:14m:41s
Inactivity   : 0h:00m:00s
NAC Result   : Unknown
VLAN Mapping : N/A                    VLAN         : none
As you can see, for the problem user, just plain IKE IPSec is negotiated, without NAT-T.

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Cisco :: Unable To Connect To Data Center When Connected To Vpn

Oct 21, 2011

We have had this issue for a long time in our enterprise. I don't work all the time in networking. I did a CCNA a while ago. We used to have a network manager who set everything up but he left the company. Basically we have this issue that if you connect to Cisco L2TP Remote Access VPN you can't access any resources at our Data Center. Also if you connect directly to the LAN.

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Unable To Load Webpage Because Server Sent No Data

Apr 4, 2012

I did nothing different to my computer. It was online fine and then an hour later when I came back, it wouldn't load any pages. I have a DSL modem and a wireless router that also connects another family member's desktop to the Internet. (As well as our phones via wifi.). The connection is fine on the other PC through a wireless adapter (both are desktops), and on the wifi the phones work perfectly so I know the modem and router aren't the problem. But even though my desktop says it's connected (not wirelessly, it directly connects to the router.), no pages will load. If I use chrome browser it eventually tells me this webpage is not available regardless of which page I try to load, or sometimes it's telling me no data received - unable to load the webpage because the server sent no data. Yet oddly a couple of times after forever it seemed to half load a couple pages. Internet Explorer just keeps trying to load pages forever with blank white page as a result.

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Cisco :: Unable To Poll SNMP Data From Nexus 7010

Apr 18, 2012

I have two Nexus 7010 in the data center. I'm unable to poll SNMP data from one of the NEXUS 7010s. The other Nexus 7010 is working fine.  I have compared the SNMP configurations, and they are identical. When I do "show snmp" on the non-working switch, I have SNMP packets in "Unknown Context name", not sure why. I have done show vdc and it matches the working switch output. Here is output of show snmp from the non-working switch: 133 SNMP packets input        0 Bad SNMP versions        0 Unknown community name        0 Illegal operation for community name supplied        0 Encoding errors        0 Number of requested variables        0 Number of altered variables        0 Get-request PDUs        0 Get-next PDUs        0 Set-request PDUs        0 No such name PDU        0 Bad value PDU        0 Read Only PDU        0 General errors        0 Get Responses        133 Unknown Context name0 SNMP packets output        0 Trap PDU        0 Too big errors        0 No such name errors        0 Bad values errors        0 General errors        0 Get Requests        0 Get Next Requests        0 Set Requests        0 Get Responses        0 Silent drops.

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Cisco :: Unable To Get 6509 IOS Via Add To Repository Job

May 16, 2012

This is a new install of LMS 4.2 evaluation.  I have a current install of LMS 3.2 which is working.   When I run an Add job for our core 6509 in Software Repository using on the 3.2 LMS it works normally.  When I attempt the same job in LMS 4.2 for the same device the device is not selectable in the left hand window and it has a message that says (This operation requires Containment data in Inventory. Either this is unavailable) Or (Add Image from CCO not supported).   Also and probably related is that LMS 4.2 cannot complete an inventory update on the 6509s that we have and does not say why the inventory job collection failed.  So far as I can tell the other devices inventory and offer IOS updates correctly.  I ran a job to get all device package updates before I ran any of the jobs.  The devices all pass credential checks except for HTTP, which is not activated on the devices. 

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Dell :: Unable To Send Data Out Of Laptop Inspiron 15r Using Bluetooth

Mar 9, 2013

i m not able to send data out of my laptop dell inspiron 15r (2013) using bluetooth but at the same time i m able to receive data instead.

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Cisco Routers :: SA540 / Unable To Process Data Received From Secure Gateway

Dec 26, 2011

Is Anyconnect supported for SA540 I have installed in on my android phone however I keep getting error "Unable to process data received from secure gateway" when trying to connect. If anyconnect is supported on SA540 how do I get it working?

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Cisco WAN :: Unable To Login At 6509 Switch

Jul 4, 2011

We are unable to login at Cisco 6509 switch, due to username and password not working. We have tried to recover the password as per Cisco document, but that is also not working. This switch is our Primary Switch in our network.

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Cisco Switching/Routing :: 887m - Unable To Route Data Between Primary And Secondary IP Networks

Jan 7, 2013

We an 887m router in our office with an unmanaged switch. We have two networks, 192.168.0.x and 192.168.11.x connected to router on the same interface ( is a secondary ip) but I can seem to be able to route packets from one network to the other. Internet traffic is fine from both networks. I can't see what I'm doing wrong here. I can ping the (router) from the 192.168.0 network but nothing beyond that.
I tried this at home with no other config and its the same. Is this by design?

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Cisco :: 6509 - Unable To Tenet / SSH / HTTP To WISM

Feb 26, 2013

I have issue to access one of the wism on 6509 switch however other wism is ok both wism on switch are up and functional how to enable remote access on wism.

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TP-Link 3G/3.75G Router :: Unable To Configure BSNL-EVDO Data Card (ZTE-AC8700)

Mar 13, 2013

Region : India
Model : TL-MR3020
Hardware Version : V1
Firmware Version :

I'm unable to configure my Data Card (ZTE-AC8700). I tried with manual settings but it keeps on showing the message "connecting" but doesn't connects although my datacard is shown as identified by the device MR-3020. I'm using BSNL EVDO connection and my datacard is ZTE-AC8700. It doesn't uses any APN, only a username and password and dial number "#777" is required to connect. configuring my datacard with MR3020 ???

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Cisco Switching/Routing :: 6509 - Unable To Ping IP In FWSM

Nov 17, 2012

I have a vlan defined in FWSM for server farm there is a one server with two IP addresses and teaming has done on it how ever from FWSM i am able to ping both IP addresses but from core 6509 switch i am only able to ping one ip address. from FWSM show ARP command displays the same virtual mac addresses against both IPS of the same server.

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Cisco Switching/Routing :: 6509-E / VSS - Unable To Set Switch Number

Aug 28, 2012

I have a 6509-E chassis that was prevoius in a VSS configuration. Due to some VSL failures I had to cobvert it to a standalone chassis but would like to bring it back to a virtual system.

Whenever I try to convert it by using the command "switch convert mode virtual" I get the msg %Please configure local switch number first". After doing so by entering the CLI cmd "switch set switch_num 1 local" I still get the same message.

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Cisco Application :: ACE4710 - Unable To Perform End To End SSL?

Nov 9, 2011

I have to load balance traffic between 2 servers sitting behind the LB. The webservices are on HTTPS/8443. I followed the end to end configuration guide for SSL. No success.
Here is my configuration -
rserver host nms1
ip address
conn-limit max 4000000 min 4000000


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Cisco Application :: ANM 5.2 Unable To Import ACE 4710

Mar 14, 2013

I am currently experiencing a problem while trying to import multiple 4710 ACE Appliances into ANM. ANM version is 5.2 and ACE 4710 Appliances version is 5.1.2. The error message is the same for all Appliances (currently 14, more to be deployed this year, another 12 this year). The management class, policy-map and service policy are all in place.

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Cisco Switching/Routing :: 6509 Unable To Redirect Http Traffic

Mar 26, 2012

On a Catalyst 6509 switch I have configured wccp protocol in order to redirect the Http traffic to a Bluecoat SG8100. It was working fine until a new L3 interface implementation.Thereafter I was unable to redirect the http traffic due to an error reported from the Cat6509: [code] After some checks I supposed that the problem should be the UDP 2048 port connection between the Switch and the Bluecoat while the switch L3 port and the bluecoat are on the same Lan. A deep analysis found that the WCCP protocol seems to be as follow:

-Proxy address to Switch Port Here I Am
-Switch Port to Proxy address I See You
-Switch Port to Proxy address UDP 2048 packet (dropped by firewall)
It's strange to me that the first dialog is correctly handled by the correct Cat6509 interface while the UDP packets are flowing from another Vlan interface not configured with the WCCP and apparently not involved on the protocol.Last of all the WCCP is now disabled and unusable?

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Windows 7 Unable To Download Any Application More Than 30 Mb

Jan 8, 2013

I could not able to download a 1.5 GB of file size.Its getting interrupted while 30 mb or so ...I have tried in wireless connectivity & even wired internet connectivity as well.I dont understand wether the problem with IE or with internet connection provider or my IT administrators restricted the download functionalities for my user name ?

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Cisco Application :: Unable To Access Server Through VIP (ACE 4710)

Oct 3, 2012

configure Cisco Ace 4710 ?Note :- Just a testing face I need to access my one server( : 80) through VIP :- ,    I have only one Cisco Router 2800 and One L2 Cisco Switch 2960 and Cisco Ace 4710 . So I already configured 2 Different VLANS in Switch (Vlan 10 & Vlan 100) and by router I given the ip address of that Vlans with Inter Routing Vlan. My Connectivity is like this :-- Router Ethernet 0/0 --- with vlan 10) & Router Ethernet 0/1 ---- with vlan 100 ) connected with switch after that I configured ACE LB and connect the ACE interface with switch Like that ---- Connect to ACE Interface 2/3 vlan10 with switch vlan10(Ethernet port  2-12) and  Connect to ACE Interface 3/3 vlan100 with switch vlan100(Ethernet port  13-24) .Testing to access server from Switch Vlan10 to Vlan 100 where my server is there.
Configuration :---

ACE>  client side Vlan10 ( , VIP :-, SM--
 ACE>  server side Vlan100 (, Web server -- with 80 port
 ACE> Managment Vlan 1000 ( ,
 ip  route
 I already Configured in Routed mode but From Vlan10 ip subnet example like or User PC) tried to access server with VIP but not responding , if i access server with real IP then accessible (why boz there is inter vlan routing)?

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Cisco Application :: ACE 4710 Unable To Access Through Web Browser

Aug 13, 2012

We have 4710 ACE in our network and currently we are using software version A3 2.0.
Currently we are not able to access the ACE through web interface but Telnet is happening properly. Connection is establing while we are doing the telnet to ACE through port 80 and port 443. find the below dummy configuration.
resource-class SLB_STICKY
limit-resource all minimum 0.00 maximum unlimited
limit-resource sticky minimum 10.00 maximum equal-to-min


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TCP Window Size - Unable To Login To Application

Dec 11, 2011

We have a site where uses are unable to login to an application. After running a packet trace on the traffic coming from the site to the server they are trying to access, the trace indentifies that the client pc is sending a window size of zero to the server, and it does this twice. So in essence the client is saying it is too busy. This is strange as all the other applications work for the users and it is only this one application that is experiencing issues. The only other issue is that there is some retransmitted traffic before the client sends window size.

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