Intel 05-2352-005 Operating System Notes, Supervised Transfer, Elvtune Using Ioctls, Solutions

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the 32 second timeout is reached, a CANCEL will be sent by HMP to the remote site. If there is no response by the remote site to the CANCEL, there will be an additional 32 second timeout, at the end of which, a GCEV_DISCONNECTED event will be reported.

Supervised Transfer

H.450.2 Supervised Transfer has not been tested with Cisco 5300 running IOS 12.3(8).

2.4Operating System Notes

Using Multiple NICs Under Heavy Loads

When using multiple network interface cards (NICs) under heavy loads, kernel assertions may occur.

Symptom: Calls may fail with the following message displayed:

kernel: KERNEL: assertion (flags & MSG_PEEK) > failed at net/ipv4/tcp.c (1284)

Solutions:

Resolution 1 - If you have two NICs on one segment, turn off Forwarding on at least one of the NICs.

Eth0: 192.168.66.21

Eth2: 192.168.66.77

net.ipv4.conf.eth0.forwarding = 0 net.ipv4.conf.eth2.forwarding = 0

Resolution 2 - Update the following system parameters as shown:

sysctl -w net.ipv4.tcp_max_syn_backlog=2048 sysctl -w net.ipv4.route.max_size=1048576 sysctl -w net.ipv4.route.gc_thresh=65536

Elvtune Using IOCTLS

Elvtune using IOCTLS is now deprecated. To tune the IO scheduler, use the files exported to the sysfs directory.

/sys/block/<device>/queue/iosched

HMP Linux 1.2 Release Update, Rev 05 — September 2006

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Contents Release Update SeptemberHMP Linux 1.2 Release Update, Rev 05 September How to Use This Publication PurposeIntended Audience Related Information Updated for Service Update Document Rev 05, published SeptemberDocument Rev 04, published December Document Rev 03, published JuneDocument Rev 02, published January Document Revision HistoryDocument Rev 01, published October Service Update Software Installation Release DevelopmentsOrder of Procedures Assumptions and PrerequisitesInstalling the Service Update Following messages are displayedHMP Verification Demo Environment VariablesSupport for Red Hat Enterprise Linux Update Support for Suse Linux Enterprise ServerSupport for 120 Low Bit Rate Channels Transaction RecordHMP Linux 1.2 Release Update, Rev 05 September Issues Issue TypeDefect Number PTR Number Product or ComponentIssues Resolved in HMP DescriptionFcdgen error while loading shared Dataformatmulaw Known Issues in HMP Restrictions and LimitationsGeneral Conferencing FaxGlobal Call, IP, and Ipml Voice DemosResolved Restrictions and Limitations Host-based H.323 Protocol Stack Echo Cancellation With Continuous Speech Processing Echo Cancellation With Conferencing Configuring UDP/RTP Port Range Compatibility NotesConfiguring T.38 Service Port Range Coder Negotiation with Third Party Stacks SIP Call ControlExample Using Multiple NICs Under Heavy Loads Elvtune Using IoctlsSolutions Operating System NotesDocumentation3 Updates Release DocumentationIncorrect Correct, Development Software, the following apply , Release Documentation, the following applyInstallation Documentation Operating Software DocumentationHost Media Processing Diagnostics Guide Development Software Documentation Original RevisedFax Software Reference for Linux and Windows Global Call API for Host Media Processing Library ReferenceGlobal Call IP for Host Media Processing Technology Guide HMP Linux 1.2 Release Update, Rev 05 September 2006September Voice API for Host Media Processing Library Reference Dxmreciottdata„ Description „ Cautions„ Errors „ Example Following example is for Linux applicationsFollowing example is for Windows applications HMP Linux 1.2 Release Update, Rev 05 September 2006September „ See Also Voice API for Host Media Processing Programming Guide Transaction RecordDemonstration Software Documentation Audio Conferencing API for Host Media Processing Demo GuideIP Media Server for Host Media Processing Demo Guide $INTELDIALOGICDIR/demos/IPMediaServerGlobal Call API Demo Guide