Cisco Application :: 11503 - Stickiness Not Working Fine Without Clearing Session Manually
Sep 11, 2012
We have a pair of CSS 11503 installed in our DC. Stickiness is configured for one of the application since long back and was working pretty fine till last couple of months. Since last two months, we observed that CSS is not distributing sessions the way it suppose to be. Mostly, it forwards the session to same server even though request is coming from different sources. Once we refresh the sessions manually, it starts working fine. We have to do this exercise manually every alternate day.
I only have configured load balancing on apache with a very simple setup. I have to deploy 2 applications on my clients environment that run inside jboss. One of these applications needs session to be sticky to work properly. The other does not.
In apache I can configure is the sticky parameter is true or false, based on the url, like /appA/* is sticky and /appB/* is not sticky. Can I do that in a CSS 11503? My client insists that it is impossible. That the CSS is only ip based.
I copied the configuration below from the manual: owner arrowpoint # content ruleWapSticky
I have a CSS 11503 with a basic content rule for TCP 10000 going to a few backend servers. I was looking into the default timeout values for flows and when testing using telnet the flow didn't terminate as expected?
For example, i have no 'timeout multiplier' specified in the config and when i look at the output of 'show flow-timeout default' it tells me the default 16 seconds timeout is in effect for *. With that in mind, i telnet to the content rule vip on TCP 10000 and on the backend server using wireshark i can see the TCP threeway handshake. With no data passing i'd expect the CSS to terminate this flow after 16 seconds.. yet it takes exactly 128 seconds before wireshark shows the RST and the flow is terminated. 128 being 8 times the default 16 second flow timeout.
If i try to force the connection to close early by specifiying 'flow-timeout-multiplier 2' in the content rule, or even a multiplier of 40, it still waits 128 seconds to close the telnet connection.
I am seeing the following behavior when computers move from one switch to another with dot1x ONLY when there is a 'stupid' switch in between.
computer -------- 'stupid' switch ------- 2960
dot1x is working fine but when the computer is disconnected, the port still shows the authentication session id so when the computer connects to another port or switch, authentication succeeds but traffic doesn't pass. While I'm almost certain that the culprit is the 'stupid' switch that doesn't clear the session id, I have already tried another one and the problem remains so I'm actually just asking for a confirmation that all these 'stupid' switches present this behavior and if there is a workaround in this case.
We have ACE 4710, It is configured with IP based stickiness and working fine for a web application server (BMC Remedy). We tried configuring cookie based stickiness for the same server. Server application is having JSESSIONID.But after configuring cookie based stickiness, there is an issue that the first page is coming for entering login credentials and after entering it the page is blank or not responding. What is the pre-requirement for configuring cookie based stickiness in ACE for BMC Remedy web application and which type of cookie based stickiness is suitable or possible?
i don't know why cu need this feature, he want stickiness based on source ip and source port. Does CSS 11500 support stickiness based on source IP and source port?or is there any other method to support stickness based on source ip and sourceport?
We are using an ACE20 module running version A2(3.2).I have a question regarding IP stickyness and the timeout parameter.I found this in the "Server load balancing configuration guide" (in a section entitled: "Configuring a Timeout for IP Address Stickiness"):
"The sticky timeout specifies the period of time that the ACE keeps (if possible) the IP address sticky information for a client connection in the sticky table after the latest client connection terminates. The ACE resets the sticky timer for a specific sticky-table entry each time that the module opens a new connection or receives a new HTTP GET on an existing connection that matches that entry."
The parts in bold seem to point to the fact that the timeout is an "inactivity timeout" as the counter is reset on every new connection.The next section in the documentation is entitled: "Enabling an IP Address Sticky Timeout to Override Active Connections" and says:
"By default, the ACE ages out a sticky table entry when the timeout for that entry expires and no active connections matching that entry exist. To specify that the ACE time out IP address sticky table entries even if active connections exist after the sticky timer expires, use the timeout activeconns command."
This seems to contradict the previous statement.So my question is: is the IP stickyness timeout an "inactivity timeout" or not?
I have a number of web sites that are currently being load balanced by CSS 11503s runninng 8x code. I was recently requested to configure HTTP --> HTTPS redirects on the CSS for every site. In the past, I have only configured the redirects for sites that had a requirement. Now it appears that the server teams want all content encrypted.
1) What impact will this have on the CPU? 2) What impact will this have on Memory utilization? 3) Is there a maximum nubmer on redirects? 4) Are there other things I should be concerned about?
i have two CSS-11503 in redundant mode running 8.20 code. We had an incident in our network where a layer 2 loop caused some high traffic through the CSS' and had to shutdown some network gear(including the CSS) to clear the problem. When the CSS' were powered back up, the SSL service was suspended, why this would occur? There rest of the config appeared normal. I am the only person on these boxes, the configs were written, and I have never had a reason to suspend the ssl service.
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?
We now have a new requirement . We are replacing existing pair of CSS with ACE 4710 appliances. The problem here is that I can see from the configuration that some SSL certificate installed in CSS .Is it possible to transfer the existing SSL certificate from the 11503 to the ACE? Or, do we need to generate a new key pair and CSR on the ACE? Is there any document available to know the steps for the same.
We have several pairs of CSS11501 and 11503 in our network.This issue affects only one pair of CSS11503 in one of our data centres. [code] We use vrrp in one-armed mode for load balancing and they units have performed great for a number of years. We're obviously going to be migrating to ACE ... but not just yet.We have started to experience a problem with replicating the configurations between two CSS11503 in a pair.When running the commit-VipRedundConfig, it starts off happily enough, though slowly.Ending with "working" and the spinning cursor, even after 1 hour the script hasn't completed.We noted on the backup CSS that the APP configuration disappears during the process and I can't remember if this is normal behaviour.
Re-adding the app session configuration seems to interrupt the process, and when checking the configuration on the backup CSS approximately half of it is missing. Everything after the first owner is gone.
1. Configuration is too large, or just large enough to make the commit script take too long for realistic service. 2. Software bug? 3. Combination of both. 4. From now on manually add config to both CSS's and maintain it by process management.
Am trying to verify performance figures for ACE 4710 as EOL replacement for a CSS 11503 Am sure that the ACE 4710 smokes the CSS but have to complete the due diligence
Pulling figures from data sheets, release notes etc.. I have only come up with the followingIs there any further figures available for the ACE 4710 to fill in the blanks in table?
I have a single cisco 11503 load balancer.There is a single Banner student information system which is load balanced on it with Virtual ip 10.3.20.101 which is working fine without any issues .I am now trying to add an Oracle ERP application with virtual IP 10.3.20.230 and physical ips 10.3.19.22 and 10.3.19.23 all on port 8003.When I just make the group ERP-Apps-Grp active , the vitual ip address 10.3.20.230 is pingable , but when I make the the content Erp_IAT active it stops pinging. [code]
content My_Group add service blade1 add service blade2 add service blade3 vip address 1.2.3.4 advanced-balance arrowpoint-cookie
[code]...
So I have 3 blades which are proxy servers and user go first to an MS ISA server then the VIP of the CSS and then the rules processes them give them a blade and chuck them out onto the Internet.
I want to leave the above rule, but remove one blade create an additional content group with that blade and have it process requests for a particular site so, I would create the following
content My_Group2 add service blade3 vip address 1.2.3.4 advanced-balance arrowpoint-cookie
[code]...
So my question is can I do that having the same VIP's etc so if a request comes in and it matches www.thewebsite.com that the second content rule matches it 'better' and therefore processes it or would it still be caught by the "/*" content group. I don't want to create more VIPS as I have a real ache getting firewall rules done.
I'm not sure if my terminology is correct when using hairpinning but i was wondering if there is any special config needed when you try to access a content rule VIP from a server that's configured as a member of a source group on the same CSS?
So say i have a content rule with a VIP 20.20.20.20 and i also have two servers 192.168.1.1 and 192.168.1.2 that are part of a source group with VIP of 20.20.20.21. My problem at the moment is if from the servers 192.168.1.x i try to ping the other VIP 20.20.20.20 that's configured on the same CSS then it doesn't work and ping fails. The same happens with HTTP traffic to the 20.20.20.20 VIP.
I would have thought that the NAT of the source group would happen before the routing so the 192.168.1.x IP's would be natted to 20.20.20.21 and then passed over for routing where the CSS would see that the VIP 20.20.20.20 is local and it would send it on it's way.
I thought it might be ACL related but i increased the verbosity of acl logging and couldn't see anything in the logs.The source group works fine on it's own and from the CSS itself i can ping the 20.20.20.20 VIP fine. It just seems that from the source group members i can't ping the VIP.
what is the OID for See the hit status of the spefic VIP and RIP coming under the VIP .apeart from this CSS box having any module to moniter the hit status or VIP's and RIP's
I recently "inherited" a CSS 11503 - I've only used ACEs before - and I want to get HTTP keepalives working.To start, I created a test service:
lb-1# show run service sunbird-http-7025-test !************************** SERVICE ************************** service sunbird-http-7025-test port 7025 ip address 141.211.229.168
I have already raised this discussion on "LAN, Switching and Routing" group. But I guess this is the right group for my queries. So I am sending my queries in this group again.
We are using CSS 11503 with one 16FE line card. We have connected 3 servers with redundant link. So FE1-2 in Server1, FE 3-4 in Server2 and FE5-6 in Server3. Our system team has configured APA in their servers as they are using HP-Ux.
1) Do we need to do any configuration at line card.
2) Do we need to do ether-channel at loadbalancer end. if yes, can you share me any cisco doc on how to do it.
I have 2 pair of 11501 switches and 1 pair of 11503 switches on 3 sites(LA, China, Taiwan).Each site has a pair of 1105x switch running as redundancy between them and is a standalone which will not interact with others.Recently a series of interfaces(ports) down happened to every active 1150x switches without any reason and log.Especially today, it happened to active switches at 5:39 AM meanwhile on 3 sites.
I'm trying to design a CSS configuration that allows servers in the same vlan to be the source and destination of load-balanced traffic. My thought is to add two new vlans, one for the VIPs and one for the servers, then NAT the source IPs going from the LB to the servers.
Is this the right way to do it?I've never NATted using CSSs, so I wanted to verify what I'm thinking.Our current config trunks the vlans -
My app session was working fine and i managed to see it all up and working. now that i have tried to run script commit-redundancy etc i see the session as APP_SESSION_INIT instead of up. The log shows me on the standby box now that it sees the following :
A few days ago my internet suddenly stopped working. I plugged in the ethernet cord and everything worked fine. Checking the properties in the device manager showed the device was working properly, I also tried resetting it to make sure it was enabled but it did not work.
Upon troubleshooting, the "Windows Network Diagnostic" said the problems was that the Wireless adapter was not turned on. Using the switch on the front of the laptop as well as the function keys does nothing. Usually a graphic pops up showing if the WiFi is on or off, changinging transparent to show the WiFi is disabled. Now when I turn the switch on it always appears transparent, effectively going from off to off
So I know the computer reads both the function keys and the switch on the front but both methods never actually turns the adapter on. I just finished a system restore and nothing has changed
I am new to Cisco ACE, I have a ACE 4710 MD running, I would like to know how can I know what session persistence is running on the ACE, I what to know if it is using soruce IP or any other persistence.
I try to make session-reuse working on an ACE-4710 Version A5(1.0) without success. Actually, I am facing the problem of the high number of backend HTTP connections that must pass through a firewall. I want to reduce this amount of open sessions with real servers by allowing the ACE to establish permament TCP connections with each rserver. However, it does not work as I expected. I still see individual TCP sessions established and closed after each GET - 200OK exchange. The parameter-map I have to enable this feature is as follows :
parameter-map type http PERF_YHA_HTTP_PARAM persistence-rebalance set header-maxparse-length 65535 set content-maxparse-length 65535 server-conn reuse
Note : I use PAT, on the backend, as required by the session-reuse feature
My questions are the followings :How many sessions the ACE would establish with a specific rserver ? only one ? one per TCP option set ?How much time a backend session would last if kept idle for a certain time ?What End Points must share the same TCP options to make sure session-reuse works ? Client to ACE ? ACE to rserver ? all together ?
Here at home I have great WIFI connectivity but on my main PC that is hard wired into the modem I have no Internet access. My service seems fine as my cable/VOIP telephone/wifi work great. I'm not sure how to detect my ISP settings. In 'device manager' it shows that the teredo tunneling adapter will not start. I don't know what that is or if its important here.
I have changed the channels, changed the firmware, changed the position of the wireless router, reinserted my wireless card on my rig, changed the security, turned everything setting on or off.
I work in a small office/production building and lately we have been having problems with an unstable connection. We are using a Meraki MR24 access point in our warehouse, the connection always starts out strong but sooner or later everyone will briefly lose connection and the AP goes away, then comes back and we're reconnected at excellent connection again.
