05-30-2005 09:09 AM
Hi,
I have the CMS module on my 6509 with sup1/msfc2. My problem is easy:
all works (http, smtp, pop3, ...), except ftp.
a easy example:
I have a server on ipA. And I want to load balance ipB to ipA.
I connect to ipA to ftp service (ftp works):
# ncftp ipA
ncftp / > ls -al
[...]
ncftp / > pas
passive off
ncftp / > ls -al
[...]
ncftp / > pas
passive on
ncftp / > ls -al
[...]
So, it works.
Now I want to use CMS to load balance ipB to ipA:
# ssh root@ipA
# ifconfig lo:0 ipB netmask 255.255.255.255
then:
# conf t
module ContentSwitchingModule 3
vlan XXX client
ip address ipC 255.255.255.0
vlan YYY server
ip address ipD 255.255.255.0
probe ICMP icmp
interval 30
retries 2
failed 60
receive 20
serverfarm TEST_WWW
no nat server
no nat client
real ipA
inservice
probe ICMP
vserver TEST_WWW
virtual ipB any
serverfarm TEST_WWW
persistent rebalance
inservice
end
I can ping ipB, I can use http, smtp, pop3 on ipB but:
# ncftp ipB
ncftp / > pas
passive on
ncftp / > ls -al
[...]
ncftp / > pas
passive off
ncftp / > ls
List failed.
I have no firewall.
Worst:
conf t
mod con 3
vserver TEST_WWW
no in
virtual ipB tcp ftp service ftp
in
and now, nothing works !
# ncftp ipB
NcFTP 3.1.5 (Oct 13, 2002) by Mike Gleason (ncftp@ncftp.com).
Connecting to ipB...
# telnet ipB 21
Trying ipB...
Connected to ipB.
Escape character is '^]'.
^]
telnet> q
Connection closed.
#
Any idea ?
Thanks in advance
Oles
#sh mod
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
1 2 Cat 6k sup 1 Enhanced QoS (Active) WS-X6K-SUP1A-2GE XXXXXXXXXXX
2 8 8 port 1000mb ethernet WS-X6408-GBIC XXXXXXXXXXX
3 0 SLB Application Processor Complex WS-X6066-SLB-APC XXXXXXXXXXX
Mod MAC addresses Hw Fw Sw Status
--- ---------------------------------- ------ ------------ ------------ -------
1 0002.fcbc.8f78 to 0002.fcbc.8f79 7.0 5.3(1) 12.1(22)E2 Ok
2 0030.a338.a638 to 0030.a338.a63f 2.3 4.2(0.24)VAI 8.3(0.111)TF Ok
3 0011.5ceb.5e5a to 0011.5ceb.5e61 1.7 4.1(1) Ok
Mod Sub-Module Model Serial Hw Status
--- --------------------------- --------------- --------------- ------- -------
1 Policy Feature Card WS-F6K-PFC SAD05050906 1.1 Ok
1 Cat6k MSFC 2 daughterboard WS-F6K-MSFC2 SAD05050KLM 1.2 Ok
Mod Online Diag Status
--- -------------------
05-30-2005 09:19 AM
HI,
are you trying to configure direct server return?
Is the default gateway of your server pointing to IPD?
Have you taken a sniffertrace infront and behind the CSS to verify what's going on?
The following link shows a standard setup for loadbalancing ftp services.
Kind Regards,
Joerg
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide