Sail, Just one error in my last e-mail:
On the static route at Router B [Router B] route 10.0.0.1/32 { next-hop public_address_1; ----> not _2!! bfd-liveness-detection { minimum-interval 1000; multiplier 1; } no-readvertise; } Have you tried this conf? It works fine for me :) Regards, Dario D. El Miércoles, 25 de Abril de 2007 13:25, Dario escribió: > Sail, > > The Tunnel is only for be informed when the triggered interface is failing or > not. > When the interface is ok the tunnel will be up and when it fails the tunnel > is down. > > Is a bit tricky ;) I'll try to explain it. > > Suposse you want to check the ge between router A and B: > > RouterA --- [GE] --- SW1--SW2--SW2 --- [GE] --- RouterB > > The interface you want to monitor: (Router A) > > ge-0/0/0 { > description "-- Triggered interface --"; > vlan-tagging; > unit X { > vlan-id X; > family inet { > no-redirects; > address "public_address_1/30; --> the > end-point is public_address_2 > } > } > } > > No way to monitor when it fails due to the path in the middle. > I've tried LSP's/BFD but... never works! > > Then I configure a tunnel interface: (Router A) > > ip-x/x/x { > unit 666 { > description "-- Tunel CANT-CANL --"; > tunnel { > source 10.0.0.1; ---> these addreses > are not used in your network > destination 10.0.0.2; > } > } > } > > The tunnel goes up when you define an static route via the triggered > interface: > > (Router A) > route 10.0.0.2/32 { > next-hop public_address_2; > no-readvertise; > } > > No traffic will go via this tunnel, is only UP or (as you can see when BFD > is configured :) ) DOWN. > > To force the tunnel to be down I use BFD. > > [Router A] > route 10.0.0.2/32 { > next-hop public_address_2; > bfd-liveness-detection { > minimum-interval 1000; ---> hello packets every second > multiplier 1; > } > no-readvertise; > } > > [Router B] > route 10.0.0.1/32 { > next-hop public_address_2; > bfd-liveness-detection { > minimum-interval 1000; > multiplier 1; > } > no-readvertise; > } > > (this static route in router B is only to establish the BFD session) > > When the GE fails (but it's UP), the BFD goes DOWN, the static route > dissapear and the Tunnel IP goes > DOWN too, then you receive an SNMP_TRAP_LINK_DOWN from this Tunnel and you > can be sure the GE > is failing. > > The Tunnel is only to be noticed of the GE fails, no used for traffic. No way > to force the GE to goes DOWN, > but you can monitor it in this indirect way. > > Hope it helps. > > Regards, > > Dario D. > > > El Miércoles, 25 de Abril de 2007 12:38, Sailendra Mahanty escribió: > > Hi Dario, > > > > Removing the j-nsp list. > > > > Good to know that you have explored these options however the lt interface > > (of tunnel pic) may be a bottle neck for the traffic if you are making your > > traffic pass thru this interface. I am sure you are aware of this. > > > > BTW, is it possible to share your config with me to check if there are any > > other potential problems. > > > > Thanks, > > -sail > > > > > > -----Original Message----- > > From: Dario [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, April 25, 2007 3:28 AM > > To: juniper-nsp@puck.nether.net > > Cc: Sailendra Mahanty; Sinan Ilkiz > > Subject: Re: [j-nsp] MPLS OAM not triggering LSP > > > > Dear all, > > > > I've tried BFD with LSPs but I wasn't able to make it work. > > > > If you've the possibility to use a Tunnel PIC - with a ficticious interface > > (f.e. with private address) > > and static routes (via the end-point of the interface you want to trigger) > > with BFD - is a good option, > > it works for me: in the instant the triggered interface fails, BFD goes > > down and the tunnel too. > > > > If you finally can use LSP's pleas keep us informed :) > > > > Regards, > > > > Dario D. > > > > El Miércoles, 25 de Abril de 2007 12:13, Sailendra Mahanty escribió: > > > Hi Sinan, > > > > > > Current version of JunOS that you are using, logs an error message when > > > LSP goes down because of BFD as mentioned in page-191 of the following > > > doc. However it doesn't make the LSP down. > > > > > > http://www.juniper.net/techpubs/software/junos/junos81/swconfig81-mpls-apps/download/swconfig81-mpls-apps.pdf > > > > > > thanks, > > > -sail > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sinan Ilkiz > > > Sent: Wednesday, April 25, 2007 1:55 AM > > > To: juniper-nsp@puck.nether.net > > > Subject: [j-nsp] MPLS OAM not triggering LSP > > > > > > Hi all, > > > > > > We are trying to achieve fast convergence times for one of our links. We > > > can not detect link failures in this link directly, i.e. interface never > > > goes down in case of failures. We decided that we can benefit from BFD > > > for LSPs. We are testing this configuration; > > > > > > label-switched-path lsp_to_bt_j_2_sifir { > > > from 192.168.100.1; > > > to 192.168.100.2; > > > ldp-tunneling; > > > no-cspf; > > > link-protection; > > > primary via_sifir { > > > oam { > > > bfd-liveness-detection { > > > minimum-interval 300; > > > multiplier 3; > > > } > > > } > > > } > > > } > > > > > > > > > When we simulate an indirect failure, we see that BFD session goes down > > > but LSP's path does not change. So this causes extended downtimes as long > > > as RSVP states time out. We couldn't find out what we are doing wrong. In > > > my opinion, when BFD detects the failure, it should signal to the local > > > router and say "this path is no longer available, you should find another > > > way". We tested both secondary standby and link-protection options but > > > nothing changed. We used both 7.6R4 and 8.1R3. Test lab consists of one > > > m7i and J4300 connected via their ethernet links. > > > > > > M7i === switch1 === switch2 === J4300 > > > > > > One ethernet link is used as LSP path and other is used as backup link. > > > Switch configuration is done in such a way that (using VLANs) fe-1/3/0 of > > > M7i and fe-0/0/0 of J4300 form the first path; fe-1/3/1 of M7i and > > > fe-0/0/1 of J4300 form second path. To simulate a failure we plug off the > > > fist cable between switch1 and switch2 so neither M7i nor J4300 knows > > > this problem directly and only the first path (between fe-1/3/0 and > > > fe-0/0/0) is affected. This way, we tried to simulate an indirect failure. > > > > > > [EMAIL PROTECTED]> show mpls lsp ingress extensive > > > Ingress LSP: 1 sessions > > > > > > 192.168.100.2 > > > From: 192.168.100.1, State: Up, ActiveRoute: 0, LSPname: > > > lsp_to_bt_j_2_sifir > > > ActivePath: via_sifir (primary) > > > Link protection desired > > > LoadBalance: Random > > > Encoding type: Packet, Switching type: Packet, GPID: IPv4 > > > *Primary via_sifir State: Up > > > SmartOptimizeTimer: 180 > > > Received RRO (ProtectionFlag 1=Available 2=InUse 4=B/W 8=Node > > > 10=SoftPreempt): > > > 10.1.1.2(Label=3) > > > OAM state : BFD session up LSP-ping up > > > 5 Apr 25 08:34:23.102 Link-protection Up > > > 4 Apr 25 08:33:29.085 Selected as active path > > > 3 Apr 25 08:33:29.084 Record Route: 10.1.1.2(Label=3) > > > 2 Apr 25 08:33:29.084 Up > > > 1 Apr 25 08:33:29.073 Originate Call > > > Created: Wed Apr 25 08:33:28 2007 > > > Total 1 displayed, Up 1, Down 0 > > > > > > Then we plug off the appropriate cable at "2007-04-25 08:37:55 UTC" > > > > > > [EMAIL PROTECTED]> show mpls lsp ingress extensive > > > Ingress LSP: 1 sessions > > > > > > 192.168.100.2 > > > From: 192.168.100.1, State: Up, ActiveRoute: 0, LSPname: > > > lsp_to_bt_j_2_sifir > > > ActivePath: via_sifir (primary) > > > Link protection desired > > > LoadBalance: Random > > > Encoding type: Packet, Switching type: Packet, GPID: IPv4 > > > *Primary via_sifir State: Up > > > SmartOptimizeTimer: 180 > > > Received RRO (ProtectionFlag 1=Available 2=InUse 4=B/W 8=Node > > > 10=SoftPreempt): > > > 10.1.1.2(Label=3) > > > OAM state : BFD session not up LSP-ping up > > > 7 Apr 25 08:38:01.917 Link-protection Up > > > 6 Apr 25 08:38:01.914 Link-protection Down > > > 5 Apr 25 08:34:23.102 Link-protection Up > > > 4 Apr 25 08:33:29.085 Selected as active path > > > 3 Apr 25 08:33:29.084 Record Route: 10.1.1.2(Label=3) > > > 2 Apr 25 08:33:29.084 Up > > > 1 Apr 25 08:33:29.073 Originate Call > > > Created: Wed Apr 25 08:33:28 2007 > > > Total 1 displayed, Up 1, Down 0 > > > > > > LSP is still traversing the down link. After a short while, > > > > > > [EMAIL PROTECTED]> show mpls lsp ingress extensive > > > Ingress LSP: 1 sessions > > > > > > 192.168.100.2 > > > From: 192.168.100.1, State: Up, ActiveRoute: 0, LSPname: > > > lsp_to_bt_j_2_sifir > > > ActivePath: via_sifir (primary) > > > Link protection desired > > > LoadBalance: Random > > > Encoding type: Packet, Switching type: Packet, GPID: IPv4 > > > *Primary via_sifir State: Up > > > SmartOptimizeTimer: 180 > > > Received RRO (ProtectionFlag 1=Available 2=InUse 4=B/W 8=Node > > > 10=SoftPreempt): > > > 10.1.1.6 > > > OAM state : BFD session not up LSP-ping up > > > 11 Apr 25 08:38:38.265 Record Route: 10.1.1.6 > > > 10 Apr 25 08:38:38.264 Record Route: 10.1.1.6 > > > 9 Apr 25 08:38:35.237 Tunnel local repaired > > > 8 Apr 25 08:38:35.237 Down > > > 7 Apr 25 08:38:01.917 Link-protection Up > > > 6 Apr 25 08:38:01.914 Link-protection Down > > > 5 Apr 25 08:34:23.102 Link-protection Up > > > 4 Apr 25 08:33:29.085 Selected as active path > > > 3 Apr 25 08:33:29.084 Record Route: 10.1.1.2(Label=3) > > > 2 Apr 25 08:33:29.084 Up > > > 1 Apr 25 08:33:29.073 Originate Call > > > Created: Wed Apr 25 08:33:28 2007 > > > Total 1 displayed, Up 1, Down 0 > > > > > > So it takes for LSP to switch to backup path from 08:37:55 to 08:38:38. I > > > couldn't find a logical explanation why BFD does not trigger LSP. > > > > > > Anyone of you tried to use MPLS OAM and hit the same problem? > > > > > > Regards. > > > _______________________________________________ > > > juniper-nsp mailing list juniper-nsp@puck.nether.net > > > https://puck.nether.net/mailman/listinfo/juniper-nsp > > > > > > _______________________________________________ > > > juniper-nsp mailing list juniper-nsp@puck.nether.net > > > https://puck.nether.net/mailman/listinfo/juniper-nsp > > > > > > > > > > > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp