HP P4518A - Traffic Management Server Sa7150 How to use

hp e-commerce/

xml

server accelerator

sa7150

release notes

Hewlett-Packard Company

3000 Hanover Street

Palo Alto, CA 94304-1185

Publication Number

5971-3005

March 2001

Disclaimer

The information contained in this document is subject to change without notice.

HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY

KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not

be liable for errors contained herein or for incidental or consequential damages

in connection with the furnishing, performance, or use of this material.

Hewlett-Packard assumes no responsibility for the use or reliability of its

software on equipment that is not furnished by Hewlett-Packard.

Warranty

A copy of the specific warranty terms applicable to your Hewlett-Packard

products and replacement parts can be obtained from

http://www.hp.com/serverappliances/support.

*Other brands and names are the property of their respective owners.

A54704-001



HP e-Commerce Server Accelerator SA7150

Known Issues

SA7150 SNMP support is read-only

SNMP support on the SA7150 is intended for monitoring purposes

only and cannot be used for configuration. Attempts to write to MIBs

result in write failures and errors returned to the SNMP agent.

The SA7150 cannot test root element data in XML

patterns.

For example, given <e1>abc</e1> No pattern exists that allows you

to test [e1="abc"]. The SA7150 requires that the filter expression

([e1="abc"]) be preceded by a path expression, however no such

expressions are effective in this context (e.g., /, //, /*, //*, /e1, and //

e1.)

Remote service ports can be set to port numbers

used by other services.

When all remote services are enabled (telnet, ssh, snmp, traps) it is

possible to configure ports in such a way that services conflict.

User Guide: Command Line Reference entry,

p. 96, setsnmp snmp enable | disable command

needs additional information

An IP address and a netmask must be assigned to the device before

SNMP can be enabled. If these are unassigned when you attempt to

enable SNMP, the device will prompt you for them before allowing

you to proceed. The CLI Reference entry on page 96 of the

HP e-Commerce/XML Server Accelerator SA7150 User Guide

should have included a reference to this fact.

CAUTION: When you

assign an IP address to

the SA7150 (a

requirement if you intend

to use SNMP) the device

becomes visible on the

network. Be sure to

consider security issues

when you assign an IP.

Syntax:

Intel SA7150> setsnmp snmp enable

Need an IP address to start SNMP service.

Enter IP Address [10.1.2.65]: 1.1.1.0

Need a netmask to start SNMP service.

Enter Netmask [255.255.255.0]:

Optional Default Route to start SNMP service.

Enter Default Route (’none’ to delete) [none]:

SNMP Service started.

Intel SA7150>

Release Notes for Version 2.4.1.0.24

User Guide: summary of XML parsing

Chapter 3 of the HP e-Commerce/XML Server Accelerator SA7150

User Guide, “Theory of Operations,” should contain the following

summary outlining how the SA7150 parses incoming XML

documents:

1. MAP intercepts HTTP requests, receives the entire request and

replaces “Connection: Keep-Alive” with “Connection: Close” (if

it exists.)

2. If the request is not an HTTP POST or if XML is disabled for the

MAP, the request goes to the mapped server.

3. If the request is an HTTP POST and XML is enabled, the

SA7150 parses the POSTed document. If the document is not

XML, the request goes to the mapped server.

4. If any portion of the document is malformed:

• If the command xml_well_formed is set to enable, a 403

error (“POSTed data was not well-formed.”) is returned.

• If the command xml_well_formed is set to disable, the

request goes to the mapped server.

5. The parser extracts the URI from the request’s URL.

6. The extracted URI is compared to the URI expression of each

XML pattern for each XML server in order. If a match is found,

the parser then compares the XML expression portion of the

XML pattern to the document.

7. If both parts of an XML pattern (URI expression and XML

expression) on an XML server match the request, then the

request goes to that server.

8. If only the URI expression matches and an XML pattern using

the keyword default as the XML expression has been created for

a server for the matching URI expression, then the request goes

to that server.

9. If an XML pattern with the keyword default has not been created

for a server for the matching URI expression then the request

goes to the mapped server.

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