[j-nsp] Strange OSPF Issue over MPLS VPN with PE-CE as OSPF !
vaibhava varma
svaibhava at gmail.com
Wed Jul 11 04:45:06 EDT 2012
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
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