Cat 6500 SupEng MSFC II IOS SLB performance

Hello,
anyone know which are the current cat 6500 Supervisor Engine II MSFC II IOS SLB performance ? I need to know the max tcp/udp cuncurrent active session and the max tcp/udp setup rate.
Thanks a lot.
Best regards
Fabio Bellini

check out the following link for the performance details :
http://www.cisco.com/en/US/products/hw/modules/ps2706/products_data_sheet09186a00800887f3.html

Similar Messages

Jumbo Frame - Enabling on a VLAN of CAT 6500 running IOS

Jumbo frames needs to be enabled on one of the vlan interface on Cisco 6500 IOS Switch.
=================================================================
•1) Once enabled the mtu 9216 on the required vlan interface do we need to reload the switch to take effect (I believe that in some low end swicthes it needs a reload)
•2) If we enable only one Vlan interface, how about the other vlan interfaces(about 200 are on this switch)? Do we need to specify mtu1500 on other vlan interfaces?
I have read information at the following two links, but I still wish to reconfirm by asking the questions in this forum. Someone who has already implemented this may have gained more experience while implementing it on CAT 6500 IOS Switch.
https://supportforums.cisco.com/message/963341#963341
http://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010edab.shtml
http://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010edab.shtml#backinfo1
Thanks.
Alphonse

You do not need to reboot your 6500 after you enable jumbo frames, but it is good idea to do it during an outage window. You only need to reboot smaller switches i.e. 3560, 3750, etc...after enabling jumbo frames. On these switches you can only enable it globally. Only enable jumbo frames for the vlans you need. You usually need jumbo frames for vlans connecting to the storage systems.
Good Luck

IOS SLB versus CSM

Hi,
trying to figure out a possible solution for a 6500 and got a bit confused. According to my knowledge, IOS SLB is working either in L2 (MAC) or L3/4 (NAT), to ensure load balancing. CSM comes in the game, but offers much more, extending to L4/7. Are the two solutions substitude or complementary? Is it true that only with an CSM can you get HTTP probes to check your load balanced server farm? What other differences do you know about these two solutions?
In the paper http://www.cisco.com/en/US/partner/products/hw/modules/ps2706/products_configuration_example09186a0080094066.shtml
it is stated that "To run Cisco IOS SLB software, you must configure the mode using the show ip slb mode [csm | rp] command before any configuration. In the show ip slb mode command, the rp argument is default. You can only configure csm argument if you have the Content Switching Module (CSM)."
While in
http://www.cisco.com/en/US/partner/products/hw/modules/ps2706/products_configuration_example09186a008009452d.shtml
cisco states that "You cannot run Cisco IOS® SLB software on the same switch as the CSM."
Any ideas on that?
Thanks in advance

there are 2 ways to configure the csm.
You can use the same ios slb command and just tell the switch that there is a csm with the command 'ip slb mode'.
Or you can use the 'module contentswitching ' command.
If you use the first method, you can't use both a CSM and ios slb on the same switch.
If you use the second method, it is ok to have both ios slb and csm.
IOS SLB offers L4-7 loadbalancing solution.
Just be aware that as soon as you do L7 or do some nating, you poor performance with ios slb compare to a CSM.
One advantage of ios slb is the capacity to do radius loadbalancing [inspecting radius packet to identify framed ip, ...]
This is why in CMX solution we combine both ios slb and csm.
IOS SLB is used to loadbalance radius and the CSM is used to loadbalance the rest of the traffic.
Personally, I would say if you just need some vpn or firewall loadbalancing, ios slb is enough.
If you need HTTP or any other traffic wthe CSM is a better choice.
Regards,
Gilles.

IOS SLB or CSS?

Hi
I am revieiwing SLB options for my client - real server and client side access subnets terminate on common 6500s/Sup720s....intial requirement is small so IOS SLB looks like a possible fit as tactical (would require feature set upgrade)....any known issues?
If I go for CSS then I assume that I will need to use SLB-on-a-stick config and destination/source NAT given current access topology...right?...i.e. I do not weant to have to re-engineer/place layer 3 separation between client-side MSFC and server farms.

Gilles
Thanks for fast response....I assume this is 'dispatch mode' where dest IP remains constant/MAC is modified.
My deployement issue is further complicated as SLB may need to enconmpass real servers being in subnets on both local 6500/Sup720 access vlans and those on peer (OSPF) remote
6500/Sup720 access vlans.
It seems to me that to avoid re-IPing, the best approach is to use CSS on a stick and use source/dest NAT....side affect of this is all clients appearing to real servers on single source IP = SLB VIP. Do you agree?
Also, would above work if some of the real servers were on 'foreign' peer Sup720 access subnets L3 reachable to the local Sup720? On paper this would seem to be fine as long as L3 reachability exists between remote real server and the SLB VIP which will be the address by which all real servers recognise clients.
Cheers for your input.
Colin

Cat 6500 with DCNM 6.2(1)

Hi there,
for test purposes I installed Cisco Prime DCNM 6.2. It works great with out Nexus 5k and 7k, however I have trouble with our older Cat 6500 devices. While I know that support for these devices is limited I am surprised that the portchannels could not be discovered performance wise and in regard to the topology map, even if they are connected to N7k's. Neither the normal portchannel ISLs between different 6500 nor the vPCs between 6500 and N7k appear in the topology, although the switches were successfully discovered and are considered "managable" via snmp and ssh.
Is there anything I need to do to make it work?
Best regards
Pille

Rafael,
I had the same issue. You need to go into ACS and create a custom Shell Profile (Policy Elements > Authorization and Permissions > Device Administration > Shell Profiles), flip to the "Custom Attributes" tab, and add the following:
Attribute: cisco-av-pair
Requirement: Mandatory
Attribute Value: Static
Value: shell:roles="network-admin"
...although if you want a non-admin or DCNM "User" role, you would use the following instead:
Value: shell:roles="network-operator"
Save that. Then make sure your Device Admin Authorization Policy (Access Policies > Access Services > Default Device Admin > Authorization) references that Shell Profile in the "Results" section.
I'm using DCNM version 6.2(5) and this works.
Here's a useful link for more info: http://www.cisco.com/en/US/products/ps9911/products_configuration_example09186a0080bf5512.shtml

IOS SLB and IBM Workload Manager

Does anyone know if IOS SLB can function similar to Multinode Load Balancing (MNLB) in that the IOS router acts as a Services Manager which contacts the OS390 Worload Manager (WLM) who then reports back the best OS390 server for a particular connection.
Under MNLB, the Local Director performs the task as the Services Manager, but can a IOS SLB router perform this task?
Thank you for your help.

Steve, thank you for the reply. I have a large-scale OS390 WLM request as I'm told that this is the method for providing server load-balancing in a sysplex environment. I wonder why it is not supported in version 4.X. Do you happen to know the long term goal for OS390 load balancing support?
I appreciate your help, Thank you

Cisco IOS SLB or CSM?

I am trying to inform myself if Cisco IOS supports Server Load Balancing (SLB) without the CSM. It appears this software has been integrated into a hardware module known as a Content Switching Module. (CSM)
Aside from cost and being a hardware module (faster) in a IOS based Catalyst 6500, Is there a functional advantage / disadvantage of using the Cisco CSM over Cisco IOS Server Load Balancing or vice versa. Any comments would be appreciated. Thanks.
Mark

IOS SLB shares the same software code base as Cisco IOS and has all the software features sets of Cisco IOS software. IOS SLB is recommended for customers desiring complete integration of SLB technology into traditional Cisco switches and routers.
The CSM is specifically designed to meet the demands of large Internet service providers (ISPs), Co-location facilities, Application service providers (ASPs), and Enterprise web server farms.
These links might help you gain a better understanding:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121e/121e8/iosslb8e.htm#xtocid32
http://www.cisco.com/en/US/partner/products/hw/modules/ps2706/products_qanda_item09186a0080092384.shtml
http://www.cisco.com/warp/customer/cc/pd/si/casi/ca6000/prodlit/ccsm_ds.htm

IOS SLB Exclusively for Internal Clients

We would like to turn up IOS SLB in dispatched mode on (core) SUP720 MSFCs in an HSRP environment. We would sequester the farm(s) of IIS and Citrix servers on an 'SLB VLAN', with our internal client base on an 'Office VLAN'. All databases and other supporting servers for the SLB servers are also on the 'Office VLAN'.
Question: are there any issues, caveats, or compromises related to the back-end SLB servers accessing required resources on the Office VLAN? I am thinking that normal database and supporting traffic initiated by the SLB servers would just traverse the MSFC (as the default gateway) via inter-VLAN routing and that only the client-initiated, VIP-destined traffic on the Office VLAN would be handled by the IOS SLB feature and policies. In this thinking, supporting traffic replies from the databases back to the SLB server would use the routed SLB server's real IP address.
Thanks in advance for any input and experiences with this topology. I'm hoping that this is a forest-for-the-trees situation, but I haven't seen many references to an all-internal deployment of either IOS SLB or appliance-based SLBs.
Thanks,
Gene

If you are using dispatched mode, it needs to be L2 adjacent.In dispatched mode, the virtual server address is known to the real servers and IOS SLB redirects packets to the real servers at the media access control (MAC) layer.Phase I of IOS SLB implements dispatch mode only for packet redirection.In this mode, the real servers must be Layer 2 adjacent to the device redirecting packets,not beyond an additional router.

How to Configure Transparent caching on Cat 6500 with CSM in routed mode

I am trying to configure Transparent caching on Cat 6500 with CSM in routed mode, but facing some problems in it , also I have gone thru the example config on cisco site for transparent caching using CSM on Cat 6500 , but the above does not fit my clients requirement.
The scenario is like
Access Switches - Cat6500 with MSFC & CSM - Internet Router
|
Cache Engines and Real servers
The clients as well as real servers are on seperate VLANs (L3) and the requirement is to load balance the internet traffic using cache engines.
I'd really appreciate any helpful suggestions or any useful links/docs/info on this.
Thanks
kumar

Hello Joerg,
Thanks for the reply.
I have already gone thru the sample config shown by this weblink, however this link refers to configuring transparent caching on the CSM in BRIDGED MODE ( i.e both the client and server vlans are having the same IP address ) but in our case , we have multiple L3 VLANS on the CAT6509 having IP addresses in different SUBNETS , and the Real servers to be used for caching also exist on one of these VLANS. Thus, the scenario described by the Weblink does not apply here. Also , in the configuration referred by the above weblink, the VLAN 100 is configured as client , however the endusers are shown to be on vlan200 which is configured as SERVER VLAN in the CSM.
Dont you think there is something wrong here, I mean the endusers should be on VLAN 100 (Client) and real servers on VLAN 200 (SERVER).
So, I have to configure CSM in routed mode ( i.e both the client and server vlans will have seperate IP addresses in different subnets ) and the endusers will be on all VLANS .
Pls let me know , how I can implement this solution.
Thanks again
Sudhir

Cisco IOS SLB

Hello Guys,
I am wondering if cisco 3750 Series support Cisco IOS SLB for SMTP protocol, Can anyone help me in this?
Thanks in advance,
Jagdev

Hi Jagdev,
Cisco supports IOS SLB only on Cat 6k, 7x00
Siva

CSM - IOS SLB failover ?

I can't see this from the documentation, but as far as I can see the configuration commands on the switch are the same for IOS SLB and for the CSM. Does this mean that if you have an CSM which fails, the subset of functions supported by IOS SLB will be ?
I realise performance would be less and only 500 VIPs would be supported etc.
Thanks
Simon

Simon,
I do not think this is the case. If you look closely at the configuration you will see the command ip slb mode csm. This causes all SLB functions to be offloaded to the CSM. The default is ip slb mode rp which is IOS based. If the CSM fails then SLB will stop working. You will need to enter the command ip slb mode rp for it to work again.
If you are running version 2.1 or above it is recommended you run ip slb mode rp and use the configuration command
module ContentSwitchingModule X where X is the module number
and the slb commands under this.
Cheers
Phil
Cheers
Phil

IOS SLB conns/sec

Hi is it possible to get a conns/sec statistic from the IOS SLB configuration. I can only see conns and max conns etc. I'm trying to get a figure to use so that I can compare it to max conns/sec. I gather IOS SLB is capable of 20k max conns/sec with the 720BXL.
Thanks

Justin,
you'll need to perform the math manually (or within a script).
Get the number of conn every x sec and make (o2 - o1)/x to have conn/sec
Gilles.

IOS SLB Loab Balance Questions

Forgive me if this is the wrong forum but it was the closest one I found relating to my issue.
I've trying to load balance four of our radius servers using IOS SLB. The config works well and the radius servers are accepting requests fine. I follow this article which wasn't too bad to follow:
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns377/c649/cdccont_0900aecd800eb95f.pdf
My two questions are:
1. Sticky Option
I understand it's used to make sure the client's accounting information
goes to the correct real server, but I'm not sure how it really works
and what's the best time to set it to.
Eg:
ip slb vserver RAD-UDP-1646
virtual 210.x.x.224 udp 1646
serverfarm RADFARM
sticky 86400 group 10
inservice
a/ The documentation says "This configuraion causes the sticky database to store its entries for 86,400 seconds of inactivity". What do they mean by "inactivity" - no radius packets coming through? inactivity from the user's end?
b/ It also says "the client's IP address is added to the IOS SLB database..." - is this the client's framed IP that the ISP assigns to the customer???
c/ And what would be the optimum time to set the sticky timer to be?
2. SLB connection statistics
core1-router#sh ip slb reals
real farm name weight state conns
203.x.x.74 RADFARM 8 OPERATIONAL 0
203.x.x.78 RADFARM 8 OPERATIONAL 0
203.x.x.79 RADFARM 8 OPERATIONAL 0
203.x.x.80 RADFARM 8 OPERATIONAL 2
When you disconnect, the slb stats still show you as being connected to
the real server (and both udp ports) which isn't very accurate. There is a default "delay" time which handles TCP disconnections and after being disconnected for 10 sec, the SLB stats are updated to reflect this (I've verified this works)- but nothing about how it handles UDP disconnections??? This
would skew the stats and give us a very bad misrepresentation of the
number of current and valid connections. Is there anyway to correct this???
Thanks.
Andy

Inactivity for IOS SLB means that after specified time of inactivity, the client will be free to be load balanced to another server. As long as they remain active without an idle time , they will remain connected to the same real server. For the client's IP address which is added to the IOS SLB database I think it is the frammed IP address which the ISP assigns. The optimum time for the sticky timer will be its default value or say 60 seconds.

Who is anybody using a WISM with FWSM on a CAT 6500 Switch?

Hi
Who is anybody using a WISM with FWSM on CAT 6500 switch ?
Are there any problem,if use?
And How can I set them to connecting each other ?
I have founded a document relate it on the cisco website that name is Integrating Cisco WiSM and Firewall Service Module.
I have a question concern it.
Why do I have make a VRF to communication each other ?
Please let me know.

As far as the FWSM is concerned you can have each of the wireless vlans come in to the same context of the FWSM and then just add those vlans to the FWSM as separate vlans.

802.1q between CAT 6500 and Passport 8600

Hi,
I`m configuring 802.1q trunking between CAT 6500 and passport 8600, in CAT 6500 I configure the port as trunk dot1q mode ON. In Passport 8600 I configure the port as TAG port.
I cretate the same vlans in both switch, but the interface vlans are create in CAT Switch. all hosts in Passport Switch that belongs to vlan 1 can ping his default gateaway (Interface Vlan) but hosts that belong to other vlan no.

Please somebody helpme

Cat 6500 SupEng MSFC II IOS SLB performance

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