MPLS route is still active in routing table even its corresponding OSPF route is not listed
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‎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
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
11 REPLIES 11
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‎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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‎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
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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‎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"?
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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‎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.
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.
