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MPLS route is still active in routing table even its corresponding OSPF route is not listed

MPLS route is still active in routing table even its corresponding OSPF route is not listed

Ronie_Singh
New Contributor

‎09-12-2018 09:00 AM

Hi There,

I found MPLS route is still active in routing table even its corresponding OSPF route is not listed in routing table.

Ori Destination Gateway Mtr Flags VLAN Duration
mp 192.17.80.55/32 172.17.79.1 1 U--D---um-L-- CR1-DR1_902 0d:2h:57m:41s
mp 192.17.80.55/32 172.17.79.85 1 U--D---um-L-- CR1-DR1_782 0d:3h:37m:45s
#or 192.17.80.55/32 172.17.79.85 12 UG-D---um--f- CR1-DR1_782 0d:3h:37m:46s

Even increasing the OSPF cost of the link, its mpls route is still active in routing table and traffic is going via that link.

How can I increase the metric of mpls route ?

Best Regards,
Ronie

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11 REPLIES 11

Stephane_Grosj1
Extreme Employee

‎09-14-2018 02:56 AM

You need to look at that output to check if there's no LDP LSP between the adjacent nodes. You may have one created, explaining your behavior.
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Ronie_Singh
New Contributor

‎09-14-2018 02:07 AM

OK. If you say so. I used to contact GTAC but now, I am really fed up with their support. They kept asking to provide output of cmd again and again. I better save time by looking workaround solution.

Due to the privacy, I can't share the output you are asking for. Thank you for your help till here.

Best regards,
Ronie
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Stephane_Grosj1
Extreme Employee

‎09-13-2018 02:32 PM

Hi,

I'm not GTAC, so if you think there's a bug that needs to be fixed, you should open a case.
Can you please share the output of "show mpls ldp peer detail"?
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Ronie_Singh
New Contributor

‎09-13-2018 02:18 PM

Yes, mpls-next-hop is turned on as follow.

DR1.6 # show configuration | inc next-hop
enable ospf mpls-next-hop
DR1.7 #

And also CR1-DR1_901 is directly connected to 192.17.80.55 but its ospf cost is set to 40 where the primary link CR1-DR1_782 is set to 2.

DR1.7# show ospf interfaces

VLAN IP Address AREA ID Flags Cost State Neighbors

CR1-DR1 172.17.79.86 /30 100.0.0.0 -rif--- 2/C P2P 1
CR1-DR1 172.17.79.5 /29 100.0.0.0 -rif--- 40/C P2P 1

DR1.9 # show ospf neighbor | inc 192.17.80.55
192.17.80.55 1 FULL /DROTHER 00:08:09:59/00:00:00:09 172.17.79.85 CR1-DR1
192.17.80.55 0 FULL /DROTHER 00:00:07:09/00:00:00:03 172.17.79.1 CR1-DR1

This must be a bug and Extreme really need to fix this.
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GTM-P2G8KFN