Network Error Loop State
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RoutingTroubleshoot and AlertsConfiguration Example and TechNotes What Does the EIGRP DUAL-3-SIA Error Message Mean? Download Print Available Languages Download Options eigrp PDF (23.1 KB) View with Adobe Reader on a variety of devices ospf Updated:Aug 10, 2005 Document ID:13676 Contents Introduction Prerequisites Requirements Components Used Conventions Background Information What Causes the
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EIGRP “DUAL-3-SIA” Error Message? Resolving “DUAL-3-SIA” Problems Why Did the Router Not Get a Response from All of its Neighbors? Why Did the Route Disappear? Related Information Introduction Enhanced Interior Gateway Routing Protocol (EIGRP) is an enhanced distance-vector protocol based on the diffusing update algorithm (DUAL). It is capable of (conservatively) finding all loop-free paths to any given destination based on route advertisements from neighbors. The neighbor (or neighbors) with the best path to a destination is called the successor. The remaining neighbors with loop-free paths to the destination are called feasible successors. To reduce traffic load on the network, EIGRP maintains neighbor relationships and exchanges routing information only as needed, using a query process to find alternate paths when all loop-free paths to a destination have failed. Prerequisites Requirements There are no specific requirements for this document. Components Used The information in this document is based on Cisco IOS Software Release 12.0. The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command. Conventions For more information on document conventions, refer to the Cisco Technical Tips Conventions. Background Information Routes that have a valid successor are said to be in a “passive” state. If, for some reason, a router loses a route through its successor and does not have a feasible successor for that route, then the route transitions to an
› Topics › Management › Management Articles › When does an HA node go into Suspended state due t... Management Articles CommunityCategoryKnowledge BaseUsers turn on suggestions Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for Search instead for Do you mean When does an HA node go into Suspended state due to Preemption loop ? by syadav on 11-17-2015 08:49 AM - edited on 12-08-2015 05:00 AM by reaper (14,405 Views) Labels: http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/13676-18.html High Availability , Management Problem : An HA node moves into the "Suspended" state due to Preemption loop. A node can move into suspended state due to preemption loop in a setup comprising of the following: The individual nodes are configured with a priority value and pre-emption to advocate prioritisationof an individual node. Link monitoring OR path https://live.paloaltonetworks.com/t5/Management-Articles/When-does-an-HA-node-go-into-Suspended-state-due-to-Preemption/ta-p/67706 monitoring is configured on individual nodes. Suspended (Preemption loop detected) Cause : The following sequence of events can cause the failure : When a link or path monitoring (or both) failure condition is detected by the HA daemon on the Activedevice, it moves in non-functional state. When the monitoring state is restored, the non-functional nodes moves into passive state. Since preemption is enabled in the setup, the passive device, which has a higher priority and a lower value, moves into the active state. If further instances of failure conditions are encountered, such as link OR path monitoring,the active node will keep changing its state from Active > Non-functional > Passive > Active. The node moves into "Suspend" state due to preemption loop if "Maximum number of flaps" are observed. A flap is counted when the firewall leaves the active state within 15 minutes afterit last left the active state.This value indicates the maximum number of flaps that arepermitted before the firewall is suspended and the passivefirewall takes over (range 0-16, default 3). *Maximum number of
here for a quick overview of the site Help Center Detailed answers to any http://stackoverflow.com/questions/9574367/how-to-recover-gracefully-when-android-mediaplayer-goes-into-error-loop-error questions you might have Meta Discuss the workings and policies http://networkengineering.stackexchange.com/questions/16449/udld-state-tx-rx-loop-detected of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow network error is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to recover gracefully when Android MediaPlayer goes into error loop: error(-38,0) up vote 2 down vote favorite 1 I have a MediaPlayer that plays with the following code: private network error loop void playVideo() { if (videoURI == null) { showToast("Please, set the video URI in HelloAndroidActivity.java in onClick(View v) method"); } else { new Thread(new Runnable() { public void run() { try { player.setOnErrorListener(new OnErrorListener() { @Override public boolean onError(MediaPlayer mp, int what, int extra) { Log.e("MEDIAPLAYER ERRORS", "what: " + what + " extra: " + extra); return false; } }); Log.d("video","---+ in main run"); player.setDataSource(videoURI); player.prepare(); player.reset(); } catch (IllegalArgumentException e) { Log.d("video","---+ illegal arg"); showToast("Error while playing video"); Log.i(TAG, "========== IllegalArgumentException ==========="); e.printStackTrace(); } catch (IllegalStateException e) { Log.d("video","---+ illegal state"); showToast("Error while playing video"); Log.i(TAG, "========== IllegalStateException ==========="); e.printStackTrace(); } catch (IOException e) { Log.d("video","---+ general error"); showToast("Error while playing video. Please, check your network connection."); Log.i(TAG, "========== IOException ==========="); e.printStackTrace(); } } }).start(); } } On error, my app goes into an infinite error loop with the following messages: 03-05 13:27:23.035: E/MediaPlayer(6289): stop called in state 0 03-05 13:27:23.035: E/MediaPlayer(62
Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Network Engineering Questions Tags Users Badges Unanswered Ask Question _ Network Engineering Stack Exchange is a question and answer site for network engineers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top UDLD state: tx/rx loop detected up vote 4 down vote favorite Relevant Log messages Feb 1 03:39:08.338 EST: %IPV6-4-DUPLICATE: Duplicate address FE80::212:44FF:FE4D:4400 on GigabitEthernet8/20 Feb 1 03:39:08.904 EST: %UDLD-SP-4-UDLD_PORT_DISABLED: UDLD disabled interface Gi8/20, transmit/receive loop detected Feb 1 03:39:08.904 EST: %PM-SP-4-ERR_DISABLE: udld error detected on Gi8/20, putting Gi8/20 in err-disable state Not Really sure where to go with this, i feel like the duplicate address message is telling in this case, however, sh run |i yields nothing, the interface itself doesn't even have that address to begin with.. Would really like to know more about both. I already understand UDLD - I'm just not familiar with that state and what to look at afterwards Other output: sh udld gi8/20 Interface Gi8/20 --- Port enable administrative configuration setting: Follows device default Port enable operational state: Enabled Current bidirectional state: Transmit-to-receive loop Current operational state: Disabled port Message interval: 7 Time out interval: 5 No neighbor cache information stored interface GigabitEthernet8/20 ip address 43.160.0.229 255.255.255.252 ip flow ingress ip flow egress ipv6 address 2607:FD28:AAAA:4::1/64 ipv6 enable ipv6 ospf network point-to-point ipv6 ospf 21 area 0 end GigabitEthernet8/20 is down, line protocol is down (err-disabled) Hardware is C6k 1000Mb 802.3, address is 0012.444d.4400 (bia 0012.444d.4400) Internet address is 43.160.0.229/30 MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, reliability 255/255, txload 0/255, rxload 0/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Full-duplex, 1000Mb/s, media type is LH input flow-control is off, output flow-control is off Clock mode is auto ARP type: ARPA, ARP Timeout 04:00:00 Last input 06:10:24, output 06:10:24, output hang never Last clearing of "sh