On Mon, Jan 29, 2018 at 10:31 PM sameer mughal <[email protected]> wrote:
> Thanks for the reply. > Can you please help me how can I check and correct this ? > > < > https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon > > > Virus-free. > www.avast.com > < > https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link > > > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > On Tue, Jan 30, 2018 at 11:25 AM, Emille Blanc < > [email protected] > > wrote: > > > You might want to check the MTU of the path, or ensure that pmtu is > > enabled. > > It looks like you're using a redundant ethernet interface (reth). If > > you're using a non-standard MTU, make sure it is set correctly for its > > member interface(s). > > > > ________________________________________ > > From: juniper-nsp [[email protected]] On Behalf Of > > sameer mughal [[email protected]] > > Sent: Monday, January 29, 2018 8:20 PM > > To: [email protected] > > Subject: Re: [j-nsp] SRX 550 BGP Flapping > > > > I have seen hold time error. what will be the fix on this issue? > > > > show bgp neighbor xx.xx.xx.xx > > Peer: xx.xx.xx.xx+179 AS xxxx Local: xx.xx.xx.xx+56228 AS xxxx > > Type: External State: Established Flags: <Sync> > > Last State: OpenConfirm Last Event: RecvKeepAlive > > Last Error: Hold Timer Expired Error > > Export: [ IMPORT-LAN-INTO-BGP ] Import: [ Reject-BGP ] > > Options: <Preference LocalAddress AuthKey PeerAS Refresh> > > Options: <AdvertisePeerAs> > > Authentication key is configured > > Local Address: xx.xx.xx.xx Holdtime: 90 Preference: 170 > > Number of flaps: 30 > > Last flap event: HoldTime > > Error: 'Hold Timer Expired Error' Sent: 30 Recv: 0 > > Peer ID: xx.xx.xx.xx Local ID: xx.xx.xx.xx Active Holdtime: 90 > > Keepalive Interval: 30 Group index: 0 Peer index: 0 > > BFD: disabled, down > > Local Interface: reth2.0 > > NLRI for restart configured on peer: inet-unicast > > NLRI advertised by peer: inet-unicast > > NLRI for this session: inet-unicast > > Peer supports Refresh capability (2) > > Stale routes from peer are kept for: 300 > > Peer does not support Restarter functionality > > Peer does not support Receiver functionality > > Peer does not support LLGR Restarter or Receiver functionality > > Peer supports 4 byte AS extension (peer-as xx.xx.xx.xx) > > Peer does not support Addpath > > Table inet.0 Bit: 10000 > > RIB State: BGP restart is complete > > > > <https://www.avast.com/sig-email?utm_medium=email&utm_ > > source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> > > Virus-free. > > www.avast.com > > <https://www.avast.com/sig-email?utm_medium=email&utm_ > > source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> > > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > > > On Tue, Jan 30, 2018 at 9:14 AM, sameer mughal <[email protected]> > > wrote: > > > > > Hi, > > > Can anyone help me on this bgp flapping issue? > > > > > > show bgp summary > > > Groups: 1 Peers: 1 Down peers: 0 > > > Table Tot Paths Act Paths Suppressed History Damp State > > > Pending > > > inet.0 > > > 37 31 0 0 0 > > > 0 > > > Peer AS InPkt OutPkt OutQ Flaps Last > > > Up/Dwn State|#Active/Received/Accepted/Damped... > > > xx.xx.xx.xx 9541 86 70 0 *30 * > > > 28:28 31/37/36/0 0/0/0/0 > > > > > > {primary:node0} > > > > > > Peer: xx.xx.xx.xx +179 AS 9541 Local: xx.xx.xx.xx +56228 AS 64520 > > > Type: External State: Established Flags: <Sync> > > > Last State: OpenConfirm Last Event: RecvKeepAlive > > > Last Error: Hold Timer Expired Error > > > Export: [ IMPORT-LAN-INTO-BGP ] Import: [ Reject-BGP ] > > > Options: <Preference LocalAddress AuthKey PeerAS Refresh> > > > Options: <AdvertisePeerAs> > > > Authentication key is configured > > > Local Address: 192.168.111.74 Holdtime: 90 Preference: 170 > > > Number of flaps: 30 > > > Last flap event: HoldTime > > > Error: 'Hold Timer Expired Error' Sent: 30 Recv: 0 > > > Peer ID: xx.xx.xx.xx Local ID: xx.xx.xx.xx Active Holdtime: 90 > > > Keepalive Interval: 30 Group index: 0 Peer index: 0 > > > BFD: disabled, down > > > Local Interface: reth2.0 > > > NLRI for restart configured on peer: inet-unicast > > > NLRI advertised by peer: inet-unicast > > > NLRI for this session: inet-unicast > > > Peer supports Refresh capability (2) > > > Stale routes from peer are kept for: 300 > > > Peer does not support Restarter functionality > > > Peer does not support Receiver functionality > > > Peer does not support LLGR Restarter or Receiver functionality > > > Peer supports 4 byte AS extension (peer-as 9541) > > > Peer does not support Addpath > > > Table inet.0 Bit: 10000 > > > RIB State: BGP restart is complete > > > Send state: in sync > > > Active prefixes: 31 > > > Received prefixes: 37 > > > Accepted prefixes: 36 > > > Suppressed due to damping: 0 > > > Advertised prefixes: 48 > > > Last traffic (seconds): Received 28 Sent 10 Checked 58 > > > Input messages: Total 80 Updates 30 Refreshes 0 Octets > > 2749 > > > Output messages: Total 64 Updates 5 Refreshes 0 Octets > > 1618 > > > Output Queue[0]: 0 (inet.0, inet-unicast) > > > > > > > > > <https://www.avast.com/sig-email?utm_medium=email&utm_ > > source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> > > Virus-free. > > > www.avast.com > > > <https://www.avast.com/sig-email?utm_medium=email&utm_ > > source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> > > > <#m_-4192711485207260329_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > > > > _______________________________________________ > > juniper-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > He was pretty clear, you need to set the interface mtu to proper level (default 1500) unless you have smaller/mix mtu values in your network/path. As an alternative, you can set pmtu to help packets determine the proper mtu value between connections. Lastly, you should be able to set mss to aid with mixed mtu values. Discover the lowest mtu and then -40 bytes. Simplest thing to do is lookup these things via google so you can have a better idea on how they operate. (Like, using ping to determine mtu value between you and a remote location) Good luck -- Payam Tarverdyan Chychi Network Security Specialist / Network Engineer _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
