[j-nsp] Strange OSPF Issue over MPLS VPN with PE-CE as OSPF !
Ivan Ivanov
ivanov.ivan at gmail.com
Wed Jul 11 05:44:40 EDT 2012
Hi,
Did you try with Type 3 route (ABR instead of ASBR role for PE)? I don't
know if this is applicable for your design.
I see that you use the same domain-id on both PE or I am wrong? In that
case the LSA should be Type 3 not Type 5.
HTH,
Ivan,
On Wed, Jul 11, 2012 at 11:45 AM, vaibhava varma <svaibhava at gmail.com>wrote:
> Dear All
>
> I am experiencing a very strange issue for one of my customer's
> Juniper MPLS VPN with PE-CE as OSPF. Below is the setup details:
>
>
> Location A-CE1----OSPF Area
> 120---VRF-Lite-CE1------OSPF_Area0---PE1-----MP-iBGP----PE2---OSPF_Area
> 130--Locaton_B_CE2
>
> Now the routes of Location_B_CE2 are installed in PE1 VRF table and
> seen as an External Route in the OSPF Database of PE1 as well as
> VRF_Lite_CE1 but not getting installed into the VRF Table of
> VRF_Lite_CE1.
>
> Now I am stuck up on why the LSA s not getting installed into VRF
> Table when the Forwarding Address is 0.0.0.0 and I have an Internal
> OSPF Route to the ASBR and also an ASBR Summary LSA.
>
> When I tried to do debug on that particular LSA I never saw the LSA-ID
> at all in the debug anytime.
>
> Also there is no issue for the Location_A_CE1 routes in reaching
> Location_B_CE2 and they are getting installed fine.
>
> Below are logs for reference.
>
> Subnet in Question having Issue ; 10.26.66.192/30
>
> On PE1 VRF Table Entry
>
> root at LS-MSS-01# run show route table SS7 10.26.66.192 extensive
>
> SS7.inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
> 10.26.66.192/30 (1 entry, 1 announced)
> TSI:
> OSPF area : 0.0.0.0, LSA ID : 10.26.66.192, LSA type : Extern
> KRT in-kernel 10.26.66.192/30 -> {indirect(131070)}
> *BGP Preference: 170/-101
> Route Distinguisher: 10.1.26.33:3200
> Next hop type: Indirect
> Next-hop reference count: 9
> Source: 10.1.26.33
> Next hop type: Router, Next hop index: 583
> Next hop: 10.1.26.190 via em0.0, selected
> Label operation: Push 16
> Protocol next hop: 10.1.26.33
> Push 16
> Indirect next hop: 8ec22d0 131070
> State: <Secondary Active Int Ext>
> Local AS: 64513 Peer AS: 64513
> Age: 13:11 Metric2: 1
> Task: BGP_64513.10.1.26.33+179
> Announcement bits (2): 1-SS7-OSPF 2-KRT
> AS path: I
> Communities: target:64512:3200 domain-id:1.1.1.1:0
> Import Accepted
> VPN Label: 16
> Localpref: 100
> Router ID: 10.1.26.33
> Primary Routing Table bgp.l3vpn.0
> Indirect next hops: 1
> Protocol next hop: 10.1.26.33 Metric: 1
> Push 16
> Indirect next hop: 8ec22d0 131070
> Indirect path forwarding next hops: 1
> Next hop type: Router
> Next hop: 10.1.26.190 via em0.0
> 10.1.26.33/32 Originating RIB: inet.3
> Metric: 1 Node path count:
> 1
> Forwarding nexthops: 1
> Nexthop: 10.1.26.190 via em0.0
>
> [edit]
> root at LS-MSS-01#
>
> On PE1 OSPF Database Entry
>
>
> root at LS-MSS-01# ...instance SS7 external extensive lsa-id 10.26.66.192
> OSPF AS SCOPE link state database
> Type ID Adv Rtr Seq Age Opt Cksum
> Len
> Extern *10.26.66.192 10.1.26.117 0x80000003 884 0xa2 0x881a
> 36
> mask 255.255.255.252
> Topology default (ID 0)
> Type: 2, Metric: 0, Fwd addr: 0.0.0.0, Tag: 208.0.252.1
> Gen timer 00:23:25
> Aging timer 00:45:16
> Installed 00:14:44 ago, expires in 00:45:16, sent 00:14:44 ago
> Last changed 00:14:44 ago, Change count: 3, Ours
>
> [edit]
> root at LS-MSS-01#
>
> On VRF-Lite_CE1 OSPF Database Entry
>
> root at PS-LS-01# ...instance SS7 external extensive lsa-id 10.26.66.192
> OSPF AS SCOPE link state database
> Type ID Adv Rtr Seq Age Opt Cksum
> Len
> Extern 10.26.66.192 10.1.26.117 0x80000003 924 0xa2 0x881a
> 36
> mask 255.255.255.252
> Topology default (ID 0)
> Type: 2, Metric: 0, Fwd addr: 0.0.0.0, Tag: 208.0.252.1
> Aging timer 00:44:36
> Installed 00:15:23 ago, expires in 00:44:36
> Last changed 00:15:23 ago, Change count: 3
>
> [edit]
> root at PS-LS-01#
>
> root at PS-LS-01# ...se instance SS7 asbrsummary extensive
>
> OSPF database, Area 0.0.0.120
> Type ID Adv Rtr Seq Age Opt Cksum
> Len
> ASBRSum *10.1.26.117 10.200.32.5 0x80000008 193 0x22 0x930e
> 28
> mask 0.0.0.0
> Topology default (ID 0) -> Metric: 1
> Gen timer 00:46:46
> Aging timer 00:56:46
> Installed 00:03:13 ago, expires in 00:56:47
> Last changed 00:42:40 ago, Change count: 6, Ours
>
> [edit]
> root at PS-LS-01#
>
> root at PS-LS-01# run show route table SS7
>
> SS7.inet.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 10.1.26.116/30 *[OSPF/10] 00:42:59, metric 2
> > to 10.200.32.6 via em1.0
> 10.26.4.1/32 *[OSPF/150] 00:42:59, metric 0, tag 0
> > to 10.200.32.6 via em1.0
> 10.26.66.209/32 *[Local/0] 03:41:54
> Reject
> 10.200.32.4/30 *[Direct/0] 03:41:53
> > via em1.0
> 10.200.32.5/32 *[Local/0] 03:41:53
> Local via em1.0
> 224.0.0.5/32 *[OSPF/10] 03:42:12, metric 1
> MultiRecv
>
> [edit]
> root at PS-LS-01#
>
> Subnet Workig Fine : 10.200.32.4/0
>
> PE2 Entry
>
> root at TC-MSS-01# run show route table SS7 10.200.32.4 extensive
>
> SS7.inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
> 10.200.32.4/30 (1 entry, 1 announced)
> TSI:
> OSPF area : 0.0.0.0, LSA ID : 10.200.32.4, LSA type : Extern
> KRT in-kernel 10.200.32.4/30 -> {indirect(131070)}
> *BGP Preference: 170/-101
> Route Distinguisher: 10.1.26.1:3200
> Next hop type: Indirect
> Next-hop reference count: 9
> Source: 10.1.26.1
> Next hop type: Router, Next hop index: 578
> Next hop: 10.1.26.189 via em0.0, selected
> Label operation: Push 16
> Protocol next hop: 10.1.26.1
> Push 16
> Indirect next hop: 8ec22d0 131070
> State: <Secondary Active Int Ext>
> Local AS: 64513 Peer AS: 64513
> Age: 14:30 Metric2: 1
> Task: BGP_64513.10.1.26.1+55880
> Announcement bits (2): 0-SS7-OSPF 1-KRT
> AS path: I
> Communities: target:64512:3200 domain-id:1.1.1.1:0
> Import Accepted
> VPN Label: 16
> Localpref: 100
> Router ID: 10.1.26.1
> Primary Routing Table bgp.l3vpn.0
> Indirect next hops: 1
> Protocol next hop: 10.1.26.1 Metric: 1
> Push 16
> Indirect next hop: 8ec22d0 131070
> Indirect path forwarding next hops: 1
> Next hop type: Router
> Next hop: 10.1.26.189 via em0.0
> 10.1.26.1/32 Originating RIB: inet.3
> Metric: 1 Node path count:
> 1
> Forwarding nexthops: 1
> Nexthop: 10.1.26.189 via em0.0
>
>
> [edit]
> root at TC-MSS-01#
>
> OSPF Database Entry on PE2
>
> root at TC-MSS-01# ...ase instance SS7 external extensive lsa-id 10.200.32.4
> OSPF AS SCOPE link state database
> Type ID Adv Rtr Seq Age Opt Cksum
> Len
> Extern *10.200.32.4 10.26.66.13 0x80000001 889 0xa2 0xc338
> 36
> mask 255.255.255.252
> Topology default (ID 0)
> Type: 2, Metric: 0, Fwd addr: 0.0.0.0, Tag: 208.0.252.1
> Gen timer 00:05:46
> Aging timer 00:45:11
> Installed 00:14:49 ago, expires in 00:45:11, sent 00:14:49 ago
> Last changed 00:14:49 ago, Change count: 1, Ours
>
> [edit]
> root at TC-MSS-01#
>
> OSPF Database Entry on Location_B_CE2
>
>
> root at SAPC# run show ospf database external extensive lsa-id 10.200.32.4
> OSPF AS SCOPE link state database
> Extern 10.200.32.4 10.26.66.193 0x80000001 16 0xa2 0x87bf
> 36
> mask 255.255.255.252
> Topology default (ID 0)
> Type: 2, Metric: 0, Fwd addr: 0.0.0.0, Tag: 208.0.252.1
> Aging timer 00:59:43
> Installed 00:00:15 ago, expires in 00:59:44
> Last changed 00:00:15 ago, Change count: 1
>
> [edit]
> root at SAPC#
>
> ASBR Summary LSA on Location_B_CE2-No output-LSA not there
>
> root at SAPC# run show ospf database asbrsummary extensive
>
> [edit]
> root at SAPC#
>
> Location_B_CE2 Route table
>
> root at SAPC# run show route
>
> inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 1.1.1.1/32 *[OSPF/10] 00:00:05, metric 1
> > to 10.26.66.193 via em1.0
> 10.1.26.116/30 *[OSPF/150] 00:00:05, metric 0, tag 3489725441
> > to 10.26.66.193 via em1.0
> 10.26.4.1/32 *[OSPF/150] 00:00:05, metric 0, tag 3489725441
> > to 10.26.66.193 via em1.0
> 10.26.66.192/30 *[Direct/0] 03:09:42
> > via em1.0
> 10.26.66.194/32 *[Local/0] 03:09:42
> Local via em1.0
> 10.26.251.1/32 *[Direct/0] 03:09:39
> > via lo0.0
> 10.200.32.4/30 *[OSPF/150] 00:00:05, metric 0, tag 3489725441
> > to 10.26.66.193 via em1.0
> 224.0.0.5/32 *[OSPF/10] 03:09:58, metric 1
> MultiRecv
>
> [edit]
> root at SAPC#
>
>
> Any pointers would be much appreciated.
>
>
> Regards
> Vaibhava Varma
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp
>
--
Best Regards!
Ivan Ivanov
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