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Server Load Balance on Cat6509

Cisco gurus:

I configed slb on two 6509s (native IOS, version 12.1(12c)E5). The performance is disappointing. The traffic to load balaced servers is about 4M/s. Previously, cpu load was less than 5%, now it's 30%. sh run sometimes takes 10 minutes to show up. A lot of messages like below come up. Our hardware (SUP1A, MSFC2 and PFC)dictates that IOS 12.1(12c)E5 may be the highest version that we can run.

I can only find one technical tip regarding SLB on 6500, and it's quite basic. Seems not too many people use this feature.

Can someone share your experience with this feature?

Thanks,

Weidong

--------------------------------

Cat6509#sh run

...

ip slb serverfarm TESTFARM

probe PROBE-PING

! BTW, http probe doesn't work!

!

real 192.168.66.234

inservice

!

real 192.168.66.235

inservice

!

ip slb vserver TEST-VS-FTP

virtual 192.168.75.163 tcp ftp service ftp

serverfarm TESTFARM

sticky 3600

inservice standby V-SERVER

!

ip slb vserver TEST-VS-WWW

virtual 192.168.75.163 tcp www

serverfarm TESTFARM

sticky 3600

inservice standby V-SERVER

Cat6509#sh ip slb reals

real farm name weight state conns

-------------------------------------------------------------------

192.168.66.234 TESTFARM 8 OPERATIONAL 533

192.168.66.235 TESTFARM 8 OPERATIONAL 411

Cat6509#sh log

....

%ICC-SP-5-WATERMARK: 1004 pkts for class TCAM-API are waiting to be processed

%IPC-SP-5-WATERMARK: 990 messages pending in rcv for the port Card17:Request(10000.8) seat 2210000

%ICC-SP-5-WATERMARK: 949 pkts for class TCAM-API are waiting to be processed

%IPC-SP-5-WATERMARK: 931 messages pending in rcv for the port Card17:Request(10000.8) seat 2210000

%IPC-SP-5-WATERMARK: 870 messages pending in rcv for the port Card17:Request(10000.8) seat 2210000

%ICC-SP-5-WATERMARK: 865 pkts for class TCAM-API are waiting to be processed

%IPC-SP-5-WATERMARK: 806 messages pending in rcv for the port Card17:Request(10000.8) seat 2210000

1 REPLY
Bronze

Re: Server Load Balance on Cat6509

The following document has configuration and troubleshooting information about server load balancing. Check out if it helps you :

http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008007fa2c.html

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