HP Traffic Director Server Appliances sa7200/sa7220 and 8200/sa8220 - User Guide

A P P E N D I X E Troubleshooting
305
Telnet connection to
CLI on offline
SA8220 in serial
failover mode does
not appear to
connect, or, logon
prompt does not
appear immediately.
DNS resolution is
incomplete.
The client machine’s host name must be DNS-
resolvable by the
SA8220. If DNS is not used,
use the config sys hosts add command at the
CLI to add the client’s hostname to the
SA8220’s local host file. The SA8220 also
needs to be added to the client machine’s local
hosts file. For Windows NT, the hosts file is
located in
c:\winnt\System32\drivers\etc
directory. For Solaris, edit the /etc/
nsswitch.conf to allow for local
resolution. For UNIX, the hosts file is located
in /etc. The format of the entry is: <IP>
<
SA8220Name>
<FullyQualifiedDomainName>
Example: 10.1.1.2 Broker1
Broker1.mycompany.com
Client connects
directly to the
fulfillment server,
bypassing the
SA8220
Timing issue with
routers
Define a static route for the SA8220 on the
router.
Unexpected routing
behavior
“Keepalive” option is
enabled on the
fulfillment servers when
configured with the
sticky option on the
SA8220.
Turn off “Keepalive” on the fulfillment servers
when using the sticky option.
Only some images
load when routing in
RICH-HTTP mode
“Keepalive” option is
enabled on the
fulfillment servers when
configured for RICH-
HTTP service on the
SA8220.
Turn off “Keepalive” on the fulfillment servers
when using RICH-HTTP. When “Keepalive”
is enabled on the fulfillment servers, each GET
request from the client always returns to the
same web server. If GIFs are defined on one
server and JPGs on another, then only one of
these image types is seen at the client.
Problem Possible Cause Solution