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Link Error Dampening

You can ask anything about enterprise infrastructure (virtualization, compute, storage, network) and we can discuss it deeply on this blog. I work for VMware PSO (Professional Services Organization) however in iGICS.com I share my own experience and opinions not only about VMware technologies. Accordingly, aspects of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and Then the error dampening process proceeds with step 220. [0031] In substep 210A, the error dampening process calculates Penalty (P) of the network interface based on the values of Error ratio weblink

The computer program product of claim 10, wherein said implementing the error dampening process at the node further comprises: after initiation of said deactivating the Layer 3 link of the node The computer system of claim 12, wherein said method further comprises: said processor retrieving statistics of data traffic at the node; said processor computing an error ratio (E) based on the RTR-A#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - Using the link-error-disable command without the variables, will not bring the port back up. http://www.brocade.com/content/html/en/command-reference-guide/fastiron-08040-commandref/GUID-969A8F47-AE96-4CC3-A39B-E4A92FBED616.html

Patentzitate Zitiertes PatentEingetragen Veröffentlichungsdatum Antragsteller TitelUS6678283 *10. Then the error dampening process terminates and the network interface loops back to step 120 of FIG. 2 supra for next interval for error ratio calculation. [0067] In substep 370A, the The error measure protocol continues monitoring L2 link of the network interface while Penalty (P) is greater than zero (0). [0034] In another embodiment, the error measure protocol on L2 link Implementation of an error dampening process at the node includes deactivating the Layer 3 link of the node while monitoring data traffic over the Layer 2 link of the node.

The IF-MIB 30 comprises a MIB extension referred to as a link error MIB 40. [0017] The link error MIB 40 is created as a part of the IF-MIB 30 that The method of claim 2, wherein said computing the error ratio (E) comprises: computing ErrorRatioIn as a ratio of a change in the number of erred incoming data packets at the Conventions Refer to Cisco Technical Tips Conventions for more information on document conventions. Gathered management information on L2 link and L3 link of the network interface 20 are stored in the link error MIB 40 and propagated to a management node and other nodes

BACKGROUND [0002] In conventional network management, a router employs an interface in a communication path, or a route, when the interface is stable. In this specification, the terms “deactivate” is defined as to stop using Layer 3 (L3) link of the network interface while Layer 2 (L2) is still active, as opposed to the Such a propagated signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. These protocols go through the momentous task of re-converging.

The following shows an example output. device# show link-error-disable Port 2/1 is forced down by link-error-disable. device# show link-error-disable all Port -----------------Config--------------- ------Oper---- # Threshold Sampling-Time Shutoff-Time State Counter ----- --------- ------------- ------------ ----- ------- 11 3 120 600 Idle N/A 12 3 120 500 Down 424 The value ranges from 1 through 50.

You can configure the port flap dampening feature on the primary port of a LAG using the link-error-disable command. https://www.manualslib.com/manual/546511/Dell-Force10-S4810p.html?page=503 The default value is 0 and indicates that the time is forever. A zero (0) indicates that the port will stay down until an administrative override occurs. Note:Before you run any debug command, run the debug command against an access control list (ACL) for a specific network in order to limit the output of debug.

Brocade FastIron Command Reference Supporting FastIron Software Release 8.0.40 Part Number: 53-1003913-02 JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. http://cygnussoft.com/link-error/link-error-l1119.html If the network interface determines that Error ratio (E) is greater than Threshold (T), then the network interface proceeds with step 160. Modes Interface configuration mode Usage Guidelines A Brocade device counts the number of times a port link state toggles from "up to down", and not from "down to up". The default is 750.

This means that the member ports will inherit the primary port flap dampening configuration, regardless of any previous configuration. Brocade(config)# interface ethernet 1/1/3 Brocade(config-if-e10000-1/1/3)# no link-error-disable 10 3 10 Displaying ports configured with port flap dampening Ports that have been disabled due to the port flap dampening feature are identified Consequently, the link error MIB (LE) module sends the event notification to the management node as directed. http://cygnussoft.com/link-error/link-error-l2029.html Enter commands such as the following on the primary port of a trunk.

The routing algorithm runs into a recursive routing loop failure because it is unable to find any directly-connected interface to which to send packets destined for 20.20.20.20/32. See descriptions of FIGS. 4, 5, and 6, infra, for another embodiment of the present invention. [0056] In step 320, the error dampening process determines where Penalty (P) falls in one Previous Topic: Port flap dampening Hide navigationPrevious topicNext topicToggle HighlightingPrintPrint AllEmail UsContentsIndexGlossarySearchNo search has been performed. Brocade NetIron Management Configuration Guide Supporting NetIron OS 6.0.00 Part Number: 53-1004196-02 JavaScript must be

In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN),

The default is 0 seconds. Terry Henry 65 προβολές 12:23 31 BIT MASKS FOR POINT TO POINT - Διάρκεια: 4:32. BGP Support Page Technical Support & Documentation - Cisco Systems Contributed by Cisco Engineers Was this Document Helpful? Background Theory Refer to this network diagram as you use this document: Refer to these configurations as you use this document: Rtr-A hostname RTR-A !

This is done in order to avoid route flapping and routing loops. The error measure protocol utilizes Echo/Reply data exchanges with a neighboring node to check Error ratio (E) and Reliability (R) over L2 link of the network interface. A value of 0 indicates that the port will stay down until an administrative override occurs. http://cygnussoft.com/link-error/link-error-002-elink.html This issue is seen only when MPLS is configured on Catalyst6500 or Cisco7600.

The network interface proceeds with step 130. [0025] In step 130, the network interface calculates Error ratio (E) and Reliability (R) of the link error MIB (LE) from step 120 according Problem Symptoms These two symptoms are observed with recursive routing failure: The continuous flapping of BGP-learned routes in the IP routing table. If the port state is Down , this field shows the remaining value of the shutoff timer. Dampening settings timing example: Lets say we have dampening 10 100 1000 60 half-life = 10 seconds reuse-threshold = 10 suppress-threshold = 1000 max-suppress-time = 60 second

Terry Henry 58 προβολές 3:43 BROCADE WEBAUTH AKA CAPTIVE PORTAL - Διάρκεια: 9:49. Threshold The number of times the port link state will go from up to down and down to up before the wait period is activated. When the link error MIB (LE) is trapped to send a respective event, the link error MIB (LE) sends a notification for the respective event to a management node such that Sept. 2011Bijendra SinghMethod and System for L3 Bridging Using L3-To-L2 Mapping DatabaseUS20120195316 *6.

See description of FIG. 2, infra, for steps performed by the network interface 20. Terry Henry 142 προβολές 10:12 BROCADE WEBAUTH PART 2 CUSTOMIZATION - Διάρκεια: 5:52. Terry Henry 78 προβολές 5:02 METRO RING PROTOCOL MRP - Διάρκεια: 12:23. In this specification, a routing protocol operates in L3 network link level in accordance with context of the OSI model.

You cannot configure port flap dampening on port members of the LAG. Consequently, when L3 link in the network interface 20 of Node K 14 is deactivated by the error dampening process 50, Node K 14 cannot route any data traffic but can The method of claim 2, wherein said implementing the error dampening process at the node further comprises: computing a reliability (R) based on E such that 0≦R≦1, wherein R=1 if E=0, The computer system of claim 13, wherein said implementing the error dampening process at the node further comprises: computing a reliability (R) based on E such that 0≦R≦1, wherein R=1 if

The link error MIB 40 comprises data objects of Error ratio and Reliability to hold network management information. Previous Topic: Port flap dampening configuration Hide navigationPrevious topicNext topicToggle HighlightingPrintPrint AllEmail UsContentsIndexGlossarySearchNo search has been performed. Also see FIG. 5, infra, for an example of the error dampening process 50. [0019] The error dampening process 50 comprises an error measure protocol 60.