IP Library › Granted Patent US 7,415,534
Granted Patent B2
US 7,415,534 · App. 10/978,909 · Granted Aug 19, 2008

Distribution of reachability information in data virtual private networks

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Quick Facts
Patent No.
US 7,415,534
App. No.
10/978,909
Granted
Aug 19, 2008
Kind
B2
Abstract

In methods and apparatus for acquiring VPN reachability information at a node of a data network, a VPN reachability information request is transmitted from a requesting node. The VPN reachabinty information request comprises a VPN identifier. Other nodes of the data network receive the VPN reachability information request and, if they have reachability information relevant to that VPN, they transmit such information to the requesting node where it is received and stored. The invention can be used in MPLS VPN architectures.

Claims (19)

1. A method for operating a route reflector in a data network, comprising:

receiving VPN reachability information from particular client peer node connected to the route reflector, the VPN reachability information including a VPN identifier identifying a particular VPN;

reflecting the received VPN reachability information to all non-client peer nodes connected to the route reflector;

reflecting the received VPN reachability information to all non-solicit-capable client peer nodes connected to the route reflector; and

reflecting the received VPN reachability information to only those solicit-capable peer nodes connected to the route reflector which are currently participating in the particular VPN.

2. A method for operating a route reflector in a data network, comprising:

receiving VPN reachability information from a non-client peer node connected to the route reflector, the VPN reachability information including a VPN identifier identifying a particular VPN;

reflecting the received VPN reachability information to all non-solicit-capable client peer nodes connected to the route reflector; and

reflecting the received VPN reachability information to only those solicit-capable peer nodes connected to the route reflector which are currently participating in the particular VPN.

3. A method for operating a route reflector in a data network, comprising:

receiving VPN reachability information from an external peer node connected to the route reflector, the VPN reachability information including a VPN identifier identifying a particular VPN;

reflecting the received VPN reachability information to all non-client peer nodes connected to the route reflector;

reflecting the received VPN reachability information to only those solicit-capable peer nodes connected to the route reflector; and

reflecting the received VPN reachability information to only those solicit-capable peer nodes connected to the route reflector which are currently participating in the particular VPN.

4. A computer-readable medium comprising a computer program that when loaded into a route reflector in a data network, instructs the route reflector to distribute VPN reachability information according to the steps of:

receiving VPN reachability information from particular client peer node connected to the route reflector, the VPN reachability information including a VPN identifier identifying a particular VPN;

reflecting the received VPN reachability information to all non-client peer nodes connected to the route reflector;

reflecting the received VPN reachability information to all non-solicit-capable client peer nodes connected to the route reflector; and

reflecting the received VPN reachability information to only those solicit-capable peer nodes connected to the route reflector which are currently participating in the particular VPN.

Assignments (15)
RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 53955/0436) Recorded May 18, 2023
From: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
To: AVAYA MANAGEMENT L.P.; AVAYA INC.; INTELLISIST, INC.; AVAYA INTEGRATED CABINET SOLUTIONS LLC
Reel/Frame 063705/0023 →
RELEASE OF SECURITY INTEREST IN PATENTS (REEL/FRAME 48612/0598) Recorded May 18, 2023
From: GOLDMAN SACHS BANK USA., AS COLLATERAL AGENT
To: AVAYA INC.; INTELLISIST, INC.; AVAYA INTEGRATED CABINET SOLUTIONS LLC; OCTEL COMMUNICATIONS LLC; VPNET TECHNOLOGIES, INC.; ZANG, INC. (FORMER NAME OF AVAYA CLOUD INC.); HYPERQUALITY, INC.; HYPERQUALITY II, LLC; CAAS TECHNOLOGIES, LLC; AVAYA MANAGEMENT L.P.
Reel/Frame 063691/0294 →
RELEASE OF SECURITY INTEREST IN PATENTS AT REEL 48612/FRAME 0582 Recorded Apr 26, 2023
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: AVAYA HOLDINGS CORP.; AVAYA INC.; AVAYA MANAGEMENT L.P.
Reel/Frame 063456/0428 →
SECURITY INTEREST Recorded Sep 25, 2020
From: AVAYA INC.; AVAYA MANAGEMENT L.P.; INTELLISIST, INC.; AVAYA INTEGRATED CABINET SOLUTIONS LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 053955/0436 →
SECURITY INTEREST Recorded Mar 15, 2019
From: AVAYA MANAGEMENT L.P.
To: GOLDMAN SACHS BANK USA
Reel/Frame 048612/0598 →
SECURITY INTEREST Recorded Mar 15, 2019
From: AVAYA MANAGEMENT L.P.
To: CITIBANK, N.A.
Reel/Frame 048612/0582 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 12, 2019
From: AVAYA HOLDINGS LIMITED
To: AVAYA MANAGEMENT L.P.
Reel/Frame 048577/0492 →
RELEASE OF SECURITY INTEREST Recorded Jan 11, 2018
From: CITICORP USA, INC.
To: AVAYA, INC.; SIERRA HOLDINGS CORP.
Reel/Frame 045045/0564 →
BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 041576/0001 Recorded Dec 15, 2017
From: CITIBANK, N.A.
To: AVAYA INC.; AVAYA INTEGRATED CABINET SOLUTIONS INC.; OCTEL COMMUNICATIONS LLC (FORMERLY KNOWN AS OCTEL COMMUNICATIONS CORPORATION); VPNET TECHNOLOGIES, INC.
Reel/Frame 044893/0531 →
BANKRUPTCY COURT ORDER RELEASING ALL LIENS INCLUDING THE SECURITY INTEREST RECORDED AT REEL/FRAME 023892/0500 Recorded Dec 15, 2017
From: CITIBANK, N.A.
To: AVAYA INC.
Reel/Frame 044891/0564 →
SECURITY INTEREST Recorded Jan 27, 2017
From: AVAYA INC.; AVAYA INTEGRATED CABINET SOLUTIONS INC.; OCTEL COMMUNICATIONS CORPORATION; VPNET TECHNOLOGIES, INC.
To: CITIBANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 041576/0001 →
NUNC PRO TUNC ASSIGNMENT Recorded Sep 29, 2010
From: AVAYA INC.
To: AVAYA HOLDINGS LIMITED
Reel/Frame 025051/0687 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2010
From: NORTEL NETWORKS LIMITED
To: AVAYA INC.
Reel/Frame 023998/0878 →
SECURITY AGREEMENT Recorded Feb 5, 2010
From: AVAYA INC.
To: CITICORP USA, INC., AS ADMINISTRATIVE AGENT
Reel/Frame 023905/0001 →
SECURITY AGREEMENT Recorded Feb 4, 2010
From: AVAYA INC.
To: CITIBANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 023892/0500 →