Net-Net 3810
 
Acme Packet 4500
 
Acme Packet 3820
 

PLA-Support>Sun Systems>CommsGBU>Session Delivery Network>SN-SND: Acme Service Provider
 

In this Document

Symptoms

Cause

Solution

Applies to:

Symptoms

 The error message "513 Message Too Large" shows up.

Cause

The Session Director (SD) adheres closely to the requirements of RFC 3261 (sending messages over 1300 bytes, or within 200 bytes of the link MTU, over TCP). However, if SIP/TCP is not configured on the SD, the SD will reject large messages with a “513 Message Too Large” error.

Solution

To resolve this issue, set the option "max-udp-length=0" in the sip-config. This will cause the SIPD task to send fragmented packets over UDP in case the packet size is too big and will prevent it from responding with a 513 message. Note that adding this option is dynamic in nature, so a reboot is not required for this change to take effect.

The steps to add this are as follows:

ACME-SD# con t
ACME-SD(configure)# session-router sip-config
ACME-SD(sip-config)# sel
ACME-SD(sip-config)# option +max-udp-length=0
ACME-SD(sip-config)# done
sip-config
state enabled
operation-mode dialog
dialog-transparency enabled
home-realm-id core
egress-realm-id
nat-mode Public
registrar-domain *
registrar-host *
registrar-port 5060
init-timer 500
max-timer 4000
trans-expire 32
invite-expire 180
inactive-dynamic-conn 32
enforcement-profile
pac-method
pac-interval 10
pac-strategy PropDist
pac-load-weight 1
pac-session-weight 1
pac-route-weight 1
pac-callid-lifetime 600
pac-user-lifetime 3600
red-sip-port 1988
red-max-trans 10000
red-sync-start-time 5000
red-sync-comp-time 1000
add-reason-header disabled
sip-message-len 0
enum-sag-match disabled
extra-method-stats disabled
rph-feature disabled
nsep-user-sessions-rate 0
registration-cache-limit 0
options max-udp-length=0
last-modified-by admin@console
last-modified-date 2008-12-02 22:53:12
**ACME-SD(sip-config)# exit
**ACME-SD(session-router)# exit
**ACME-SD(configure)# exit
**ACME-SD# save-config
Save-Config received, processing.
waiting 1200 for request to finish
Request to 'SAVE-CONFIG' has Finished,
Save complete
Currently active and saved configurations do not match!
To sync & activate, run 'activate-config' or 'reboot activate'.
*ACME-SD# activate-config

This solution has no attachment