LDP Neighbor - Holdown / Discovery timer expired.
Hello,
I'm having an intermittent issue with LDP sessions dropping between one specific router and it's two peers.
Solution background:
We have 3 x 7201 (NPE-G2) running c7200p-spservicesk9-mz.150-1.M5.bin.
The routers are arranged in a "triangle" with a link to each router utilising G0/2 + 3 on each router, IGP is OSPF with all routers + loopbacks being in OSPF Area 0. OSPF RID + MPLS RID is Lo0.
Routers are called ABC-CORE-1, CCC-CORE-1, CBC-CORE1.
During the "outage" the DLP session between ABC->CBC remains constant without issue, however the LDP sessions with CCC-CORE1 both drop stating the following:
ABC-CORE-1#show log
Apr 3 17:30:40.236: %LDP-5-NBRCHG: LDP Neighbor 10.64.255.2:0 (1) is DOWN (Received error notification from peer: Holddown time expired)
Apr 3 17:30:44.180: %LDP-5-NBRCHG: LDP Neighbor 10.64.255.2:0 (1) is UP
CCC-CORE-1#show log
.Apr 3 17:30:39: %LDP-5-NBRCHG: LDP Neighbor 10.64.255.1:0 (1) is DOWN (Discovery Hello Hold Timer expired)
.Apr 3 17:30:43: %LDP-5-NBRCHG: LDP Neighbor 10.64.255.1:0 (3) is UP
Neighbor output:
CCC-CORE-1#sh mpls ldp neigh 10.64.255.1 det
Peer LDP Ident: 10.64.255.1:0; Local LDP Ident 10.64.255.2:0
TCP connection: 10.64.255.1.646 - 10.64.255.2.36718
Password: not required, none, in use
State: Oper; Msgs sent/rcvd: 1191/1192; Downstream; Last TIB rev sent 130
Up time: 16:24:42; UID: 10; Peer Id 2;
LDP discovery sources:
GigabitEthernet0/2; Src IP addr: 10.64.0.1
holdtime: 15000 ms, hello interval: 5000 ms
Addresses bound to peer LDP Ident:
10.64.2.1 192.168.128.126 10.64.0.1 10.64.0.5
10.64.255.1 10.64.254.1
Peer holdtime: 180000 ms; KA interval: 60000 ms; Peer state: estab
Clients: Dir Adj Client
Capabilities Sent:
[Dynamic Announcement (0x0506)]
[Typed Wildcard (0x0970)]
Capabilities Received:
[Dynamic Announcement (0x0506)]
[Typed Wildcard (0x0970)]
ABC-CORE-1#show mpls ldp neigh 10.64.255.2 det
Peer LDP Ident: 10.64.255.2:0; Local LDP Ident 10.64.255.1:0
TCP connection: 10.64.255.2.36718 - 10.64.255.1.646
Password: not required, none, in use
State: Oper; Msgs sent/rcvd: 1193/1191; Downstream; Last TIB rev sent 130
Up time: 16:25:05; UID: 8; Peer Id 0;
LDP discovery sources:
GigabitEthernet0/2; Src IP addr: 10.64.0.2
holdtime: 15000 ms, hello interval: 5000 ms
Addresses bound to peer LDP Ident:
10.64.2.5 192.168.128.254 10.64.0.2 10.64.0.9
10.64.255.2 10.64.254.2
Peer holdtime: 180000 ms; KA interval: 60000 ms; Peer state: estab
Clients: Dir Adj Client
Capabilities Sent:
[Dynamic Announcement (0x0506)]
[Typed Wildcard (0x0970)]
Capabilities Received:
[Dynamic Announcement (0x0506)]
[Typed Wildcard (0x0970)]
I've just enabled MPLS IGP sync this morning aftere reading a few articles however I'm not convicnced that's going to make much difference, has anyone ever experieced this before?
Thanks,
Duncan.
Duncan Mossop wrote:Hello,I'm having an intermittent issue with LDP sessions dropping between one specific router and it's two peers.Solution background:We have 3 x 7201 (NPE-G2) running c7200p-spservicesk9-mz.150-1.M5.bin.The routers are arranged in a "triangle" with a link to each router utilising G0/2 + 3 on each router, IGP is OSPF with all routers + loopbacks being in OSPF Area 0. OSPF RID + MPLS RID is Lo0.Routers are called ABC-CORE-1, CCC-CORE-1, CBC-CORE1.During the "outage" the DLP session between ABC->CBC remains constant without issue, however the LDP sessions with CCC-CORE1 both drop stating the following:ABC-CORE-1#show logApr 3 17:30:40.236: %LDP-5-NBRCHG: LDP Neighbor 10.64.255.2:0 (1) is DOWN (Received error notification from peer: Holddown time expired)Apr 3 17:30:44.180: %LDP-5-NBRCHG: LDP Neighbor 10.64.255.2:0 (1) is UPCCC-CORE-1#show log.Apr 3 17:30:39: %LDP-5-NBRCHG: LDP Neighbor 10.64.255.1:0 (1) is DOWN (Discovery Hello Hold Timer expired).Apr 3 17:30:43: %LDP-5-NBRCHG: LDP Neighbor 10.64.255.1:0 (3) is UPNeighbor output:CCC-CORE-1#sh mpls ldp neigh 10.64.255.1 det Peer LDP Ident: 10.64.255.1:0; Local LDP Ident 10.64.255.2:0 TCP connection: 10.64.255.1.646 - 10.64.255.2.36718 Password: not required, none, in use State: Oper; Msgs sent/rcvd: 1191/1192; Downstream; Last TIB rev sent 130 Up time: 16:24:42; UID: 10; Peer Id 2; LDP discovery sources: GigabitEthernet0/2; Src IP addr: 10.64.0.1 holdtime: 15000 ms, hello interval: 5000 ms Addresses bound to peer LDP Ident: 10.64.2.1 192.168.128.126 10.64.0.1 10.64.0.5 10.64.255.1 10.64.254.1 Peer holdtime: 180000 ms; KA interval: 60000 ms; Peer state: estab Clients: Dir Adj Client Capabilities Sent: [Dynamic Announcement (0x0506)] [Typed Wildcard (0x0970)] Capabilities Received: [Dynamic Announcement (0x0506)] [Typed Wildcard (0x0970)]ABC-CORE-1#show mpls ldp neigh 10.64.255.2 det Peer LDP Ident: 10.64.255.2:0; Local LDP Ident 10.64.255.1:0 TCP connection: 10.64.255.2.36718 - 10.64.255.1.646 Password: not required, none, in use State: Oper; Msgs sent/rcvd: 1193/1191; Downstream; Last TIB rev sent 130 Up time: 16:25:05; UID: 8; Peer Id 0; LDP discovery sources: GigabitEthernet0/2; Src IP addr: 10.64.0.2 holdtime: 15000 ms, hello interval: 5000 ms Addresses bound to peer LDP Ident: 10.64.2.5 192.168.128.254 10.64.0.2 10.64.0.9 10.64.255.2 10.64.254.2 Peer holdtime: 180000 ms; KA interval: 60000 ms; Peer state: estab Clients: Dir Adj Client Capabilities Sent: [Dynamic Announcement (0x0506)] [Typed Wildcard (0x0970)] Capabilities Received: [Dynamic Announcement (0x0506)] [Typed Wildcard (0x0970)]I've just enabled MPLS IGP sync this morning aftere reading a few articles however I'm not convicnced that's going to make much difference, has anyone ever experieced this before?Thanks,Duncan.
For anyone that's interested I fixed this problem after some in depth troubleshooting.
Turns out the CCC router has CEF disabled.
I followed the through the following process:
Noticed flushes in the inteface counters -> researched SPD (selective packet discard) -> looked into CPU usage -> noticed IP Input process running 90%+, checked CEF with "show ip cef" showed a full adjancency table.
Checked the command "show cef interface"
Boom, "CEF Switching disabled" on every interface.
"no ip cef" "ip cef" , fixed.
For reference the running config did indeed show "ip cef" as entered and turned on.
Only thing I can think is when we upgraded from 12.4 to 15.0(1)M there was a glitch with CEF....
Very strange.
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try { // retrieve the user and add the User object to the session DAO dao = new DAO(); Person authenticUser = dao.getPerson(userID, password); session.setAttribute("validUser", authenticUser); redirectPage = mapping.findForward("success"); }
i also have a DAO object that handles all of my DB transactions (and you can see from my code above that the Authentication servlet is using that object); here is the pertinant code from that servlet:
public DAO() { datasource = "java:comp/env/jdbc/webAdvisorTest"; } public Person getPerson(String userID, String password) throws ObjectNotFoundException { // JDBC variables DataSource ds = null; Connection conn = null; PreparedStatement stmt = null; ResultSet results = null; // User variables Person validUser = null; try { // Retrieve the DataSource from JNDI InitialContext ctx = new InitialContext(); // if this statement fails, NamingException is thrown ds = (DataSource)ctx.lookup(datasource); // get DB connection and perform SQL operations conn = ds.getConnection(); // User variables String validUserID = null; String validFName = null; String validLName = null; String validEmail = null; // get DB connection and perform SQL operations conn = ds.getConnection(); stmt = conn.prepareStatement(PERSON_QUERY); stmt.setString(1, userID); stmt.setString(2, password); results = stmt.executeQuery(); // iterate through the results if (results.next()) { validUserID = results.getString("id"); validFName = results.getString("first_name"); validLName = results.getString("last_name"); validUser = new Person(validUserID, validFName, validLName); } } // handle SQL errors catch(SQLException e) { e.printStackTrace(System.err); throw new RuntimeException("Database Error: " + e.getMessage()); } // handle JNDI errors catch(NamingException e) { throw new RuntimeException("JNDI Error: " + e.getMessage()); } // clean up resources finally { doClosure(results, stmt, conn); } // if the user was not found, throw ObjectNotFoundException if(validUser == null) { throw new ObjectNotFoundException(); } return validUser; } protected void doClosure(ResultSet results, PreparedStatement stmt, Connection conn) { if (results != null) { try { results.close(); } catch (SQLException e) { e.printStackTrace(System.err); } } if (stmt != null) { try { stmt.close(); } catch (SQLException e) { e.printStackTrace(System.err); } } if (conn != null) { try { System.out.println("R18Resources.conn before close: " + conn); conn.close(); System.out.println("R18Resources.conn after close: " + conn); System.out.println("R18Resources.conn is closed? " + conn.isClosed()); } catch (SQLException e) { System.out.println("R18Resource conn close error: " + e.getMessage()); } } }
as you can see, i've added some print statements in my connection closure block. based on my output log, each connection is being properly closed and i am not encountering any errors during that closing block.
any ideas???
Message was edited by:
millerandPlease try the following code in your doClosure method. Replace your code with the following code.
public void doClosure(ResultSet pResultSet, Statement pStmt, Connection pConn) throws Exception {
try {
if (pResultSet != null) {
pResultSet.close();
pResultSet = null;
} catch (SQLException se) {
logger.error( se );
} finally {
try {
if (pStmt != null) {
pStmt.close();
pStmt = null;
} catch (SQLException se) {
logger.error(se);
} finally {
try {
if (pConn != null) {
pConn.close();
pConn = null;
} catch (SQLException se) {
logger.error(se);
And let me know if you still face this issue. What is the application server you are using? -
Timer expired and something unexpected occured
Hi all,
There is a timer in my forms , and there is the when-timer-expired form-level trigger.
The problem is that :
1) when I type something in a text item , then when the timer expires all the content of the text item are selected and is cleared if I did not notice it and if I continue to type.
2) when I click on a menu item and the timer expires at the same time then it is not the correct form which is called but another form.
So how to resolve these anomalies ?
Thank you very much indeed.The timer is looking for inactivity duration time :
if Win_API_Session.Timeout_get_inactive_time > name_in('global.inactivity_time') then
end if;
And there is this at the when-window-activated trigger:
hWind := get_window_property(FORMS_MDI_WINDOW,WINDOW_HANDLE);
Win_API_Session.Timeout_Start_Timer(hWind);
So what should cause the problems ? -
Just want to know if I am doing something wrong
or if it's another feature of Forms. I have a
GO_FORM within an IF statement in the (repeating)
WHEN-TIMER-EXPIRED trigger. It all goes well until
the IF statement evaluates to a value that makes
GO_FORM the case, the repeating timer seems to go
dead after GO_FORM switches the focus to the
specified form. Any comments? Thanks in advance.Hi Eugeniy,
The original WBP trigger has already the following code:
go_item('bijz.click_datum');
do_key('list_values');
The section where copy ('0','GLOBAL.save_mouse_record'); is mentioned is part of the code that Metalink offered me, look at:
Note 266535.1 How to call to a calender window against an unbound item via an LOV button.doc
Best regards,
Ronny. -
Regarding When-timer-expired trigger
Hi,
My requirement is to display time .From my understanding i think every time
when-timer-expired shuttle between client and middle tier for this purpose for
every expiry of time .This i feel degrades the performance.
Is there any workaround available so that the database time is fetched for the first
time and thereafter refreshing could takeplace in the client-side
Thanks in advance
regards,
prabakaran.sHere is the code:
package oracle.forms.fd;
import java.awt.AWTEventMulticaster;
import java.awt.Color;
import java.awt.Cursor;
import oracle.forms.handler.IHandler;
import oracle.forms.properties.ID;
import oracle.forms.ui.VTextField;
* A PJC to have a textfield blinking
* @author Francois Degrelle
* @version 1.0
public class BlinkTextField extends VTextField implements Runnable
public final static ID START = ID.registerProperty("START");
public final static ID STOP = ID.registerProperty("STOP");
public final static ID SETBLINKRATE = ID.registerProperty("SETBLINKRATE");
public final static ID SETFGCOLOR = ID.registerProperty("SETFGCOLOR");
public final static ID SETBGCOLOR = ID.registerProperty("SETBGCOLOR");
static Thread runner ;
protected int seconds = 400 ; // milliseconds
private Color cdefFG = null ; // default background color
private Color cdefBG = null ; // default foreground color
private Color cFore = null ; // blinking foreground color
private Color cBack = null ; // blinking background color
private boolean bSwitch = true ;
private IHandler m_handler;
public BlinkTextField ()
super();
public void init(IHandler handler)
m_handler = handler;
super.init(handler);
cdefFG = this.getForeground() ;
cdefBG = this.getBackground() ;
* switch color to simulate the blinking process
public void run()
Thread theThread = Thread.currentThread();
while (runner == theThread)
try{
Thread.sleep(seconds);
} catch (InterruptedException e) { }
if(bSwitch)
if(cBack != null) this.setBackground(cBack);
if(cFore != null) this.setForeground(cFore);
else
this.setBackground(cdefBG);
this.setForeground(cdefFG);
bSwitch = ! bSwitch ;
private void startTimer()
if (runner == null )
runner = new Thread(this);
runner.start();
private static void stopTimer()
if (runner != null )
runner = null;
public boolean setProperty(ID property, Object value)
if (property == START) // start the blinking
startTimer() ;
System.out.println("** Start **");
return true;
if (property == STOP) // stop the blinking
System.out.println("** Stop **");
stopTimer() ;
return true;
else if (property == SETBLINKRATE) // set the cursor blink rate
int i = Integer.parseInt(value.toString());
seconds=i;
System.out.println("** SetRate="+seconds+ " miliseconds");
return true;
else if (property == SETFGCOLOR) // set the foreground color
cFore = getColor(value.toString()) ;
System.out.println("** SetFGColor="+cFore);
return true;
else if (property == SETBGCOLOR) // set the background color
cBack = getColor(value.toString()) ;
System.out.println("** SetBGColor="+cBack);
return true;
else
return super.setProperty(property, value);
// expects r,g,b values separated by commas
public Color getColor(String colourValue)
try{
int r,g,b;
int rPos, gPos;
rPos = colourValue.indexOf(",");
gPos = colourValue.indexOf(",", rPos + 1);
if (rPos < 1 || gPos < 1 || gPos + 1 == colourValue.length()) {
throw new Exception("Invalid colour");
r = Integer.parseInt(colourValue.substring(0, rPos));
g = Integer.parseInt(colourValue.substring(rPos + 1, gPos));
b = Integer.parseInt(colourValue.substring(gPos + 1));
if (r < 0 || r > 255 || g < 0 || g > 255 || b < 0 || b > 255) {
throw new Exception("Invalid colour");
return new Color(r,g,b);
catch(Exception e) {
return new Color(0,0,0);
}Francois -
When-Timer-Expired goes back to form
Got a problem in my application where I have a timer on my for which requery's everytime it expires. However if I am in another application e.g. Windows Nt Explorer every time the timer expires control goes back to the form.
Does any one have any ideas??Try closing Mail App in Multitask Window
1. Double tap the home button to bring up the multi-tasking view
2. Swipe up on the screenshot of the Mail app to close
3. The app will fly off the screen
4. Test Mail again
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