Cisco Application Networking :: CAT6500 SYSLOG Loadbalancing Using ACE
Mar 17, 2012
I want to use the ACE blade in CAT6500 to loadbalancing SYSLOG events towards (SIEM) collectors. Servers and network devices will sent there syslog messages to different collectors after being loadbalanced by ACE. I was just wondering, since a lot of clients are going to sent there complete syslog events to the VIP and thus introducing a high connection rate. (+/- 200.000 CPS) According to the specs, the ACE blade has a limitation of 325.000 connection per second. I suppose this is a limitation at device level. (not on a per context basis, and does that include both TCP and UDP packets?) Could the UDP BOOST feature might come in handy allowing very high rate UDP syslog packet loadbalancing?
I am using an ACE 30 module for loadbalancing to two proxy servers. Not all the traffic needs to be loadbalanced and directed to the proxy servers. I would like the clients trying to access our intranet and other internal resources to be redirected to them before they are loadbalanced and sent to the proxy servers . Can this be done with the ACE?
We have a pair of ACE 4710 devices in front of a TMG 2010 array (3 members) and are having some issues. We have a nat pool on the ACE and need to be able to use integrated authentication in TMG since we are filtering URLs based on user ID. For example some users might have access to certain websites that other users do not have access to. TMG does all this fine when we send traffic directly to one of the TMG servers and it can successfully authenticate the user using the active directory username that was passed through. The problem occurs when we send traffic through the ACE first, upon which time the user credentials are no longer appearing to TMG and the user is getting prompted for a username/password whenever they try to access a website. Even when they do enter their username and password (which they shouldn't have to do) the request is still denied by TMG since it is coming from "anonymous" instead of their actual username.
Another problem we seem to be having which isn't as important right now is the fact that since we are using a nat pool on the ACE, every web request to the TMG servers comes from one of the NAT addresses, rather than the original client IP. Is there any way to get around this and have the actual client IP show up instead?
I have a requirement to bypass some specific traffic (with particular source to specific internet destination) in ACE 4710.
All the webtraffic (http and https) is configured to loadbalance to my proxies , i need to configure some specific traffic with source and destiantion to internet to byepass from this loadbalancing and directly got to outside interface .
I want to deploy a high availability solution for web servers in two data centers. In the primary data center I have deployed a group of web server and I want two deploy additional servers in a secondary data center for disaster recovery and high availability. Reviewing the documentation, looks like the GSS4492 is the solution for my company needs but I am not sure if I have to implement just the GSS or if I need a ACE4700 integrated with the GSS?.
The below is the display that I get on the screen when i boot the device.There are two error's one is when the daughter card is found and device give us login access after which it reboot’s. The second is stated below (this is a screen copy of the error)
INIT: version 2.85 booting/mnt/cf/TN-CONFIG on /TN-CONFIG type ext3 (rw,sync,loop=/dev/loop0)/mnt/cf/TN-CERTKEY-STORAGE on /TN-CERTKEY-STORAGE type ext3 (rw,sync,loop=/dev/loop1)/mnt/cf/TN-LOGFILE on /TN-LOGFILE type ext3 (rw,sync,loop=/dev/loop2)/mnt/cf/TN-HOME on /TN-HOME type ext3 (rw,sync,loop=/dev/loop3)/mnt/cf/TN-COREFILE on /TN-COREFILE type ext3 (rw,sync,loop=/dev/loop4)insmod: error inserting [Code]...
I know that CSRs cannot be generated with multiple names, but if the SAN is added after the cert is ordered from Geo Trust, Veri sign, etc. can the CSS support using the cert?
I'm working on a small scale Cisco WAAS deployment. I want to know if it's possible to use the entry level Cisco WAVE-294-K9 as Central Manager.Also about licensing, does this appliance model come with the enterprise level license
Do you know if it is possible in ACE 4710 appliance to configure a SIP TLS ?The SIP probe we have in the configuration guide it is only for clear text. for Lync 2013 we need to establish first a TLS session and then within it, send an SIP request..IS it possible in any version? I tried also to configure a HTTPS probe but it fails as it sends a GET which the Lync SIP server doesn't understand.
We are evaluating the one-arm design for the ACE 4700 and need some clarifications:
1. Are there any limitations in the one-arm design and the SSL offloading
2. Can the ACE be configured with an IN and an OUT vlan to the router
CLIENT -> Router -> ACE IN -> ACE OUT -> Router -> Server Vlan
so that the SSL and the clear text traffic is in a separate Vlan?
3. In some sample configuration i saw SNAT configuration on the ACE to modify the client IP. This i assume is for instructing the return traffic from the server to go through ACE? Using SNAT we eliminate the requirement for NAT or PBR on the router? Will i still be able to insert the client IP address after the SSL offload?
We have multiple CSS 11500 clusters. We have found that on all of them, if you try to open a session on any port to an IP address on the backend of the CSS, the CSS will complete the SYN-ACK-ACK session with the client. This happens regardless of whether there is something on that IP address or not.
Coming from any IP, if I try to telnet to ANY IP on the 10.2.2.0 subnet (whether or not there is an actual server on that IP) on any port (whether or not that port is open or not), the CSS will complete the initial connection. I have verified this using telnet to numerous ports and viewing the transaction in a packet capture.
Is there any way to shut this off? This is causing some licensing issues for our security folks that use a vulnerability scanner licensed on number of IP addresses.
One of our ACE-20's crash recently with little info as to why - fortunately it was the FT standby module so service wasn't impacted but obviously keen to determine the cause of the crash, and potential resolution.
Running A2 (3.5).
last boot reason: NP 1 Failed : NP Core Reset - Cause Unknown,There is nothing obvious from the switch perspective:
Apr 17 14:52:35.775 bst: SP: The PC in slot 9 is shutting down. Please wait ... Apr 17 14:52:45.780 bst: SP: PC shutdown completed for module 9 510497: Apr 17 14:52:55.781 bst: %C6KPWR-SP-4-DISABLED: power to module in slot 9 set off (Reset) 510498: Apr 17 14:57:58.277 bst: %DIAG-SP-6-RUN_MINIMUM: Module 9: Running Minimal Diagnostics... [Code]...
I need to setup new ACE 4710 device , after referring to "Establishing a Console Connection on the ACE" i had managed to set up initial console connection. During installtion i had configured vlan (default vlan 1000) , interface ip adess& subnet mask.
Post initial config i understand i should be able to open' Device Manager GUI Login Window' but it is not opening.I also need inputs on setting 4710 for the telnet connection
We have a CSS11503 that is currently being used to accept incoming HTTPS and SSH connections on a specific VIP and then PAT those client connections. I understand that it also PATs the server initiated connections. [code]
Any info about Exchange 2013 and ACE SLB functions. I know they changed to RPC over HTTPS on exch side and few other items changed as well. Any feedback from a production deployment.
ACE A2(3.4). Is it possible to set a rate-limit connections per sec from any source IP. For example, if a client is trying to GET a web page 10 time per sec I will send a reset or drop that connection.
How do I apply the connection parameter map in a configuration like this to the service policy int827? Do I need to define the traffic? Can I specify only one source destination flow to apply the set tcp half-closed TCP normalization against?
policy-map type loadbalance first-match wss-1100-l7slb class class-default sticky-serverfarm sticky-srcip-1100 policy-map type loadbalance first-match wss-1101-l7slb class class-default sticky-serverfarm sticky-srcip-1101
For server load balancing, does the ACE4710 support custom protocols? We'll be using HTTP for server health monitoring, and to determine if a server is up or down. But the client/server application is custom, and includes a lot of non-standard ports. Can the server VIP handle generic TCP connections? For example client1 connects to the VIP on http, but then later client1 switches to using tcp842 (a custom protocol, not http).
What is the equivalent of the command "show flash" in IOS for the CSS11503 as I would like to view available flash space on the CSS11500 series load balancers?
I am configuring a load balancer from cisco, a ACE 4710.Load blancing is completely new to me, and i am unexpereinced in this field. It has to be configured for a customer that want to load balance HTTP and RTSP traffic over 4 application servers (Back-end),I searched alot on google for possible solutions, and got RTSP in some way to work, but http wont work says my customer.
We are running ACE 20 modules in highly available active / standby (all active contexts on one module) mode. Currently they are on A2 (2.4) version. We are going to upgrade them to A2 (3.6a). The question is that how ling can we run them in two different SW levels? In otherwords can we have few days between upgrading both modules?
do you know what happens if you reach the limit of, for instance 100 Mbps, compression. I know that if you reach the bandwidth limit ACE will drop packets but if you configure compression what happens if you have 110 Mbps.
I supossed that ACE will compress 100 Mbps and leave 10 Mbps without compression but I don't find this information anywhere.
I am in the process of configuring load balancing on ACE module but struggling to configure virtual IP address for ACE module. I'm working on ACE30 module and using software version A5 (1.2). ACE module is in slot of Catalyst 6504 switch.
I'm setting up an ACE 4710 in our test lab before deploying in production. Do the test web servers I am using need to use the ACE as their default gateway? The are currently configured to use a multilayer switch on their vlan as their gateway but I'm guessing the ACE needs to see the return traffic for load balancing to work correctly?
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 10.96.202.10 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?
