Re: frame relay question [7:20609]
I would think that LMI is disabled and no keepalive is set on the point-to-point interfaces therefore even though PVC is down . Interface still show up up . My advice is that you should always turn on LMI unless it is a simplex link for the case of a satellite receive-only downlink regards, suaveguru --- MADMAN wrote: The reason that both serial interfaces stay up is because the routers are talking LMI their repective switches no problemo. On a link between the US and Asia thaere are most likely other switches and network devices so if you did a sh frame pvc you would see your PVC is either inactive or deleted. Dave Jim Bond wrote: Nice try, but no, keepalive is not disabled. By the way, sometimes, interface will go down... --- Ole Drews Jensen wrote: I don't know if this is the problem, but if you have keepalives disabled with the 'no keepalive' command, the link will stay up even though the PVC goes down. A 'show conf' from both routers would help. Hth, Ole ~~~ Ole Drews Jensen Systems Network Manager CCNA, MCSE, MCP+I RWR Enterprises, Inc. [EMAIL PROTECTED] ~~~ http://www.RouterChief.com ~~~ NEED A JOB ??? http://www.oledrews.com/job ~~~ -Original Message- From: Jim Bond [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 20, 2001 4:56 PM To: [EMAIL PROTECTED] Subject: frame relay question [7:20609] Hello, We have ATT frame line between US and Asia. Sometimes frame line is not available (therefore ISDN backup kicked in). But the weird thing is on both side frame routers, show serial interface says up. I couldn't ping between the 2 frame routers. Worse, on the syslog server, the link down was not captured 'cause the serial were still up. What can I do to collect some fact and data so I can yell at ATT? Thanks in advance. Jim __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ [EMAIL PROTECTED] __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ -- David Madland Sr. Network Engineer CCIE# 2016 Qwest Communications Int. Inc. [EMAIL PROTECTED] 612-664-3367 Emotion should reflect reason not guide it [EMAIL PROTECTED] __ Do You Yahoo!? Get email alerts NEW webcam video instant messaging with Yahoo! Messenger. http://im.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=20829t=20609 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: frame relay question [7:20609]
The reason that both serial interfaces stay up is because the routers are talking LMI their repective switches no problemo. On a link between the US and Asia thaere are most likely other switches and network devices so if you did a sh frame pvc you would see your PVC is either inactive or deleted. Dave Jim Bond wrote: Nice try, but no, keepalive is not disabled. By the way, sometimes, interface will go down... --- Ole Drews Jensen wrote: I don't know if this is the problem, but if you have keepalives disabled with the 'no keepalive' command, the link will stay up even though the PVC goes down. A 'show conf' from both routers would help. Hth, Ole ~~~ Ole Drews Jensen Systems Network Manager CCNA, MCSE, MCP+I RWR Enterprises, Inc. [EMAIL PROTECTED] ~~~ http://www.RouterChief.com ~~~ NEED A JOB ??? http://www.oledrews.com/job ~~~ -Original Message- From: Jim Bond [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 20, 2001 4:56 PM To: [EMAIL PROTECTED] Subject: frame relay question [7:20609] Hello, We have ATT frame line between US and Asia. Sometimes frame line is not available (therefore ISDN backup kicked in). But the weird thing is on both side frame routers, show serial interface says up. I couldn't ping between the 2 frame routers. Worse, on the syslog server, the link down was not captured 'cause the serial were still up. What can I do to collect some fact and data so I can yell at ATT? Thanks in advance. Jim __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ [EMAIL PROTECTED] __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ -- David Madland Sr. Network Engineer CCIE# 2016 Qwest Communications Int. Inc. [EMAIL PROTECTED] 612-664-3367 Emotion should reflect reason not guide it Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=20683t=20609 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: frame relay question [7:20609]
In the frame relay cloud, under certain unusual circumstances (including a trunk line that goes unidirectional), the one or both edge frame relay switches may not see the outage. LMI will therefore not report the failure from the edge switch to the router, the PVC status is not changed on the router, and you have an interface up/up even though it doesn't work. In IOS 12.1+, you can configure frame-relay end-to-end keepalive on the routers to get around this kind of failure. This command tells both routers to force the interface down if they cannot communicate across the link, even if LMI from the switch reports the PVC is active. Without an IOS that new, you'll have to rely on your DBU log entries to document the problem. It may help if you manually try to ping across the link (i.e. use extended ping to force the pings across the frame relay subinterfaces instead of the dbu) so you can tell ATT point blank that both routers are up and working, but the PVC is not. With MCI, you can open a ticket and have it sent to their Hyperstream or Concert Frame groups and try to get a tech who understands this kind of failure (some do, many don't). At ATT, I believe the equivalent group is the backbone group, but don't quote me on that. HTH, doctorcisco Silicon ... just fancy sand. Hello, We have ATT frame line between US and Asia. Sometimes frame line is not available (therefore ISDN backup kicked in). But the weird thing is on both side frame routers, show serial interface says up. I couldn't ping between the 2 frame routers. Worse, on the syslog server, the link down was not captured 'cause the serial were still up. What can I do to collect some fact and data so I can yell at ATT? Thanks in advance. Jim __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=20711t=20609 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: frame relay question [7:20609]
I don't know if this is the problem, but if you have keepalives disabled with the 'no keepalive' command, the link will stay up even though the PVC goes down. A 'show conf' from both routers would help. Hth, Ole ~~~ Ole Drews Jensen Systems Network Manager CCNA, MCSE, MCP+I RWR Enterprises, Inc. [EMAIL PROTECTED] ~~~ http://www.RouterChief.com ~~~ NEED A JOB ??? http://www.oledrews.com/job ~~~ -Original Message- From: Jim Bond [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 20, 2001 4:56 PM To: [EMAIL PROTECTED] Subject: frame relay question [7:20609] Hello, We have ATT frame line between US and Asia. Sometimes frame line is not available (therefore ISDN backup kicked in). But the weird thing is on both side frame routers, show serial interface says up. I couldn't ping between the 2 frame routers. Worse, on the syslog server, the link down was not captured 'cause the serial were still up. What can I do to collect some fact and data so I can yell at ATT? Thanks in advance. Jim __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=20614t=20609 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: frame relay question [7:20609]
Nice try, but no, keepalive is not disabled. By the way, sometimes, interface will go down... --- Ole Drews Jensen wrote: I don't know if this is the problem, but if you have keepalives disabled with the 'no keepalive' command, the link will stay up even though the PVC goes down. A 'show conf' from both routers would help. Hth, Ole ~~~ Ole Drews Jensen Systems Network Manager CCNA, MCSE, MCP+I RWR Enterprises, Inc. [EMAIL PROTECTED] ~~~ http://www.RouterChief.com ~~~ NEED A JOB ??? http://www.oledrews.com/job ~~~ -Original Message- From: Jim Bond [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 20, 2001 4:56 PM To: [EMAIL PROTECTED] Subject: frame relay question [7:20609] Hello, We have ATT frame line between US and Asia. Sometimes frame line is not available (therefore ISDN backup kicked in). But the weird thing is on both side frame routers, show serial interface says up. I couldn't ping between the 2 frame routers. Worse, on the syslog server, the link down was not captured 'cause the serial were still up. What can I do to collect some fact and data so I can yell at ATT? Thanks in advance. Jim __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ [EMAIL PROTECTED] __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=20616t=20609 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: frame relay question [7:20609]
A PVC going down will not necessarily drop the whole serial interface. Use the show frame pvc command to list your PVCs and their status. This command also gives the last time the status changed. I'm surprised you aren't getting messages about DLCI state changes - we do, and I don't think we've done anything in particular to enable them - what are your logging settings? JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 21/09/2001 09:07 am - Ole Drews Jensen To: [EMAIL PROTECTED] Subject: RE: frame relay question [7:20609] Sent by: nobody@groups tudy.com 21/09/2001 08:25 am Please respond to Ole Drews Jensen I don't know if this is the problem, but if you have keepalives disabled with the 'no keepalive' command, the link will stay up even though the PVC goes down. A 'show conf' from both routers would help. Hth, Ole ~~~ Ole Drews Jensen Systems Network Manager CCNA, MCSE, MCP+I RWR Enterprises, Inc. [EMAIL PROTECTED] ~~~ http://www.RouterChief.com ~~~ NEED A JOB ??? http://www.oledrews.com/job ~~~ -Original Message- From: Jim Bond [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 20, 2001 4:56 PM To: [EMAIL PROTECTED] Subject: frame relay question [7:20609] Hello, We have ATT frame line between US and Asia. Sometimes frame line is not available (therefore ISDN backup kicked in). But the weird thing is on both side frame routers, show serial interface says up. I couldn't ping between the 2 frame routers. Worse, on the syslog server, the link down was not captured 'cause the serial were still up. What can I do to collect some fact and data so I can yell at ATT? Thanks in advance. Jim __ Terrorist Attacks on U.S. - How can you help? Donate cash, emergency relief information http://dailynews.yahoo.com/fc/US/Emergency_Information/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=20624t=20609 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: frame relay question [7:20609]
How often and how long are the outages? Write down the times that this has happened and call it in and have ATT's Frame Relay group check the path of your PVC to see if there were any network related issues. Things that could have happened are, reroutes, downed trunks, etc... I believe ATT keeps 24 hours worth of logs on the stratacom network so if you see an outage, call it in as soon as possible and have them investigate. Another thing you could ask for is have them reroute your pvc to a different path if a better one is available. Paul Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=20629t=20609 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
