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Patent US6671722B1 successfully refreshed from Google Patents.
US6671722B1
Expired / Lapsed
US
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Stack-less, CPU-less creation of valid SNMP-trap packets
Assignee: Intel Corp
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Filing: 1999-07-08
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Granted: 2003-12-30
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Expires: 2019-07-08
Abstract
Abstract A device, such as an Application Specific Integrated Circuit (ASIC) which has access to a memory, such as non-volatile RAM (NVRAM) or Electrically Erasable Programmable Read Only Memory (E 2 PROM). The device may reside in a PC or on a network interface card for providing an interface between the PC and a network, such as an Ethernet-based network. Software on the PC constructs a base packet or template for an SNMP trap PDU and stores the template into the NVRAM or E 2 PROM associated with the device. When the device determines the need to generate and send the SNMP trap PDU, the device can, without a CPU and without a full implementation of network layer software stacks, generate the SNMP trap PDU based on the base packet stored in the NVRAM. The device need only insert the non-static data into the packet built from the base packet before sending the packet to a communication controller, such as an Ethernet controller, which subsequently sends the packet over a network, such as the Ethernet-based network.
Inventors
- 👤 Thomas L. Stachura
- 👤 Anil Vasudevan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:31
CPC Classifications
H; H04; H04L; H04L41/00; H04L41/02; H04L41/0213
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
126 words
A method, comprising: receiving data to be used as a packet template; generating the packet template, wherein the packet template includes at least two protocol layers, one of which is an SNMP protocol layer, and each of the protocol layers include at least two static fields, and each of the at least two static fields have a preset value; storing said packet template into a memory; receiving an indication of an event to be reported; generating a packet based on said stored packet template and said indication independently of a host system and without execution of a software stack for each of the protocol layers, said generated packet including non-static information; and sending said generated packet to a communication controller for transmission over a shared medium.
Claim 2
Independent Claim
126 words
A method, comprising: receiving data to be used as a packet template; generating the packet template, wherein the packet template includes at least two protocol layers, one of which is an SNMP protocol layer, and each of the protocol layers include at least two static fields, and each of the at least two static fields have a preset value; storing said packet template into a memory; receiving an indication of an event to be reported; generating a packet based on said stored packet template and said indication independently of a host system and without execution of a software stack for each of the protocol layers, said generated packet including non-static information; and sending said generated packet to a communication controller for transmission over a shared medium.
Claim 3
Dependent Claim
79 words
The method of claim 1 , further comprising: calculating a partial checksum over said static fields of said packet template, wherein: said receiving of said data includes said partial checksum, and said storing of said packet template comprises storing said partial checksum in said memory, and said generating said packet comprises calculating a complete checksum, said complete checksum being based on said partial checksum and said non-static information, said complete checksum being included as part of said generated packet.
Claim 4
Dependent Claim
22 words
The method of claim 2 , wherein said generated packet includes a Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 5
Dependent Claim
24 words
The method of claim 3 , wherein: said complete checksum is inserted into a User Datagram Protocol (UDP) packet included in said generated packet.
Claim 6
Dependent Claim
33 words
The method of claim 4 , wherein said complete checksum is based on information in said User Datagram Protocol (UDP) packet and said Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 7
Dependent Claim
36 words
The method of claim 2 , wherein said generating said packet further comprises: storing an event code and event data into said generated packet, said event code and said event data being based on said indication.
Claim 8
Dependent Claim
22 words
The method of claim 1 , wherein said generated packet includes a Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 9
Dependent Claim
36 words
The method of claim 7 , wherein said generating said packet further comprises: storing an event code and event data into said generated packet, said event code and said event data being based on said indication.
Claim 10
Dependent Claim
42 words
The method according to claim 1 , further comprising: polling at least one device over a bus; receiving a polling response from said at least one device; and generating said indication of said event to be reported based on said polling response.
Claim 11
Dependent Claim
26 words
The method of claim 1 , further comprising: maintaining a watchdog timer, an expiration of said watchdog timer causing said indication of an event for reporting.
Claim 12
Dependent Claim
37 words
The method of claim 1 , wherein the at least two protocol layers of the packet template include a User Datagram Protocol (UDP) layer, an Internet Protocol (IP) layer, and a Simple Network Management Protocol (SNMP) layer.
Claim 13
Dependent Claim
21 words
The method of claim 11 , wherein the at least two protocol layers of the packet template include a MAC layer.
Claim 14
Dependent Claim
27 words
The method of claim 12 , wherein the at least two static fields include a destination address and a source address, each stored within the MAC layer.
Claim 15
Dependent Claim
26 words
The method of claim 11 , wherein the at least two static fields include at least “Version,” “IHL,” and “Flags,” each stored within the IP layer.
Claim 16
Dependent Claim
28 words
The method of claim 11 , wherein the at least two static fields include at least “Source Port,” “Destination Port,” “Length,” and “Checksum” stored within the UDP layer.
Claim 17
Dependent Claim
31 words
The method of claim 11 , wherein the at least two static fields include at least “Total Packet Length,” “Type Version,” and “Length of Version,” each stored within the SNMP layer.
Claim 18
Independent Claim
118 words
A method, comprising: storing, into a memory, data to be used as a packet template; generating the packet, wherein the packet template includes at least two protocol layers, one of which is an SNMP protocol layer, and each of the protocol layers include at least two static fields, and each of the at least two static fields have a preset value; receiving an indication of an event to be reported; generating a packet, including non-static information, based on said previously stored packet template and said indication independently of a host system and without execution of a software stack for each of the protocol layers; and sending said generated packet to a device for transmission over a shared medium.
Claim 19
Independent Claim
118 words
A method, comprising: storing, into a memory, data to be used as a packet template; generating the packet, wherein the packet template includes at least two protocol layers, one of which is an SNMP protocol layer, and each of the protocol layers include at least two static fields, and each of the at least two static fields have a preset value; receiving an indication of an event to be reported; generating a packet, including non-static information, based on said previously stored packet template and said indication independently of a host system and without execution of a software stack for each of the protocol layers; and sending said generated packet to a device for transmission over a shared medium.
Claim 20
Dependent Claim
57 words
The method of claim 17 , wherein: said storing of said packet template comprises storing a previously calculated partial checksum in said memory, and said generating said packet comprises calculating a complete checksum, said complete checksum being based on said partial checksum and said non-static information, said complete checksum being included as part of said generated packet.
Claim 21
Dependent Claim
22 words
The method of claim 18 , wherein said generated packet includes a Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 22
Dependent Claim
24 words
The method of claim 19 , wherein: said complete checksum is inserted into a User Datagram Protocol (UDP) packet included in said generated packet.
Claim 23
Dependent Claim
33 words
The method of claim 20 , wherein said complete checksum is based on information in said User Datagram Protocol (UDP) packet and said Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 24
Dependent Claim
36 words
The method of claim 18 , wherein said generating said packet further comprises: storing an event code and event data into said generated packet, said event code and said event data being based on said indication.
Claim 25
Dependent Claim
22 words
The method of claim 17 , wherein said generated packet includes a Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 26
Dependent Claim
36 words
The method of claim 23 , wherein said generating said packet further comprises: storing an event code and event data into said generated packet, said event code and said event data being based on said indication.
Claim 27
Dependent Claim
15 words
The method of claim 17 , wherein said memory is Non-Volatile Random Access Memory (NVRAM).
Claim 28
Independent Claim
26 words
The method of 17 , further comprising: maintaining a watchdog timer, an expiration of said watchdog timer causing an indication of an event to be reported.
Claim 29
Independent Claim
26 words
The method of 17 , further comprising: maintaining a watchdog timer, an expiration of said watchdog timer causing an indication of an event to be reported.
Claim 30
Dependent Claim
37 words
The method of claim 17 , wherein the at least two protocol layers of the packet template include a User Datagram Protocol (UDP) layer, an Internet Protocol (IP) layer, and a Simple Network Management Protocol (SNMP) layer.
Claim 31
Dependent Claim
21 words
The method of claim 27 , wherein the at least two protocol layers of the packet template include a MAC layer.
Claim 32
Dependent Claim
139 words
An integrated circuit, comprising: a storage to store a packet template; a packet template generator to generate the packet template, wherein the packet template includes at least two protocol layers, one of which is an SNMP protocol layer, and each of the protocol layers include at least two static fields, and each of the at least two static fields have a preset value; a packet generator to generate a packet, based on the stored packet template and including information of an event, independently of a host system and without execution of a software stack for each of the protocol layers, said packet generator being configured to send the packet to a communication device for communicating over the shared medium; and an event processor to receive an indication of the event and inform the packet generator to generate the packet.
Claim 33
Dependent Claim
139 words
An integrated circuit, comprising: a storage to store a packet template; a packet template generator to generate the packet template, wherein the packet template includes at least two protocol layers, one of which is an SNMP protocol layer, and each of the protocol layers include at least two static fields, and each of the at least two static fields have a preset value; a packet generator to generate a packet, based on the stored packet template and including information of an event, independently of a host system and without execution of a software stack for each of the protocol layers, said packet generator being configured to send the packet to a communication device for communicating over the shared medium; and an event processor to receive an indication of the event and inform the packet generator to generate the packet.
Claim 34
Dependent Claim
81 words
The integrated circuit of claim 29 , wherein: the packet template includes a partial checksum calculated over a plurality of static fields of the packet template, said storage is configured to store the packet template and the partial checksum in a non-volatile storage, and said packet generator comprises a complete checksum calculator for calculating a complete checksum, the complete checksum being based on the partial checksum and the information of the event, the complete checksum being included in the generated packet.
Claim 35
Dependent Claim
23 words
The integrated circuit of claim 30 , wherein the generated packet includes a Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 36
Dependent Claim
27 words
The integrated circuit of claim 31 , wherein: said packet generator inserts the complete checksum into a User Datagram Protocol (UDP) packet included in the generated packet.
Claim 37
Dependent Claim
34 words
The integrated circuit of claim 32 , wherein said complete checksum is based on information in said User Datagram Protocol (UDP) packet and said Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 38
Dependent Claim
34 words
The integrated circuit of claim 30 , wherein said packet generator stores an event code and event data into the generated packet, the event code and the event data being based on the indication.
Claim 39
Dependent Claim
23 words
The integrated circuit of claim 29 , wherein the generated packet includes a Simple Network Management Protocol (SNMP) trap Protocol Data Unit (PDU).
Claim 40
Dependent Claim
17 words
The integrated circuit of claim 29 , wherein said storage stores the packet template in a RAM.
Claim 41
Dependent Claim
24 words
The integrated circuit of claim 29 , further comprising: a watchdog timer, an expiration of said watchdog timer causing the indication of an event.
Claim 42
Dependent Claim
38 words
The integrated circuit of claim 29 , wherein the at least two protocol layers of the packet template include a User Datagram Protocol (UDP) layer, an Internet Protocol (IP) layer, and a Simple Network Management Protocol (SNMP) layer.
Claim 43
Dependent Claim
22 words
The integrated circuit of claim 38 , wherein the at least two protocol layers of the packet template include a MAC layer.
Claim 44
Dependent Claim
185 words
A board for a computer, said board comprising: a communication controller; and an integrated circuit configured to communicate to a monitoring device through a second interface and to said communication controller through a first interface, wherein said integrated circuit comprises: an event processor configured to receive an indication of an event; a storage capable of storing a packet template; a packet template generator to generate the packet template, wherein the packet template includes at least two protocol layers, one of which is an SNMP protocol layer, and each of the protocol layers include at least two static fields, and each of the at least two static fields have a preset value; and a packet generator to receive the indication of the event and to generate a packet for reporting the event independently of the computer and without execution of a software stack for each of the protocol layers, the generated packet being based on the packet template stored in said storage, said packet generator being configured to send the generated packet to said communication controller through the first interface for transmission over a shared medium.
Claim 45
Dependent Claim
185 words
A board for a computer, said board comprising: a communication controller; and an integrated circuit configured to communicate to a monitoring device through a second interface and to said communication controller through a first interface, wherein said integrated circuit comprises: an event processor configured to receive an indication of an event; a storage capable of storing a packet template; a packet template generator to generate the packet template, wherein the packet template includes at least two protocol layers, one of which is an SNMP protocol layer, and each of the protocol layers include at least two static fields, and each of the at least two static fields have a preset value; and a packet generator to receive the indication of the event and to generate a packet for reporting the event independently of the computer and without execution of a software stack for each of the protocol layers, the generated packet being based on the packet template stored in said storage, said packet generator being configured to send the generated packet to said communication controller through the first interface for transmission over a shared medium.
Claim 46
Dependent Claim
37 words
The board of claim 40 , wherein the at least two protocol layers of the packet template include a User Datagram Protocol (UDP) layer, an Internet Protocol (IP) layer, and a Simple Network Management Protocol (SNMP) layer.
Claim 47
Dependent Claim
21 words
The board of claim 41 , wherein the at least two protocol layers of the packet template include a MAC layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-12-29 | 2007-06-30 | 2007-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-12-29 | 2011-06-30 | 2011-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-12-29 | 2015-06-30 | 2015-12-30 | $7700.00 | Window Closed / Lapsed |