WB3-Lab8-Configuration ON Procotor Labs Rack
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iBGP is not comming up between R4 and R5 using Loop0 for peering. the
reason is a loop.
The strange thing is that R2 is installing EIGRP route for R4's loop
(40.40.40.4) which causes a routing loop.
R4's loopback is not reachable from all devices in the POD.
!
Why is R2 preffering the EIGRP route with AD 170 although it has the route
in the OSPF Database from R4 itself.
R2#sh ip ospf database ext 40.40.40.4
OSPF Router with ID (40.40.40.2) (Process ID 1)
Type-5 AS External Link States
LS age: 101
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 40.40.40.4 (External Network Number )
Advertising Router: 40.40.40.2
LS Seq Number: 80000001
Checksum: 0x6DEB
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 100
Forward Address: 0.0.0.0
External Route Tag: 0
LS age: 335
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 40.40.40.4 (External Network Number )
Advertising Router: 40.40.40.4
LS Seq Number: 80000003
Checksum: 0x3A6B
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 0.0.0.0
External Route Tag: 0
---------------------------------------------------
R2#sh ip ospf database adv-router 40.40.40.4
OSPF Router with ID (40.40.40.2) (Process ID 1)
Router Link States (Area 2.2.2.2)
Link ID ADV Router Age Seq# Checksum Link count
40.40.40.4 40.40.40.4 355 0x80000004 0x00264B 3
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
40.40.40.4 40.40.40.4 384 0x80000003 0x003A6B 0
-----------------------------------------------------------
On R2
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Routing entry for 40.40.40.4/32
Known via "eigrp 1122", distance 170, metric 26883072, type external
Redistributing via eigrp 1122, ospf 1
Advertised by ospf 1 metric 100 subnets
Last update from 211.110.222.11 on GigabitEthernet0/0, 00:02:50 ago
Routing Descriptor Blocks:
* 211.110.222.11, from 211.110.222.11, 00:02:50 ago, via
GigabitEthernet0/0
Route metric is 26883072, traffic share count is 1
Total delay is 50120 microseconds, minimum bandwidth is 100 Kbit
Reliability 255/255, minimum MTU 1476 bytes
Loading 1/255, Hops 3
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OSPF is configured properly
-----------------------
R2#sh run | sec router ospf
router ospf 1
router-id 40.40.40.2
log-adjacency-changes
redistribute connected metric 50 metric-type 1 subnets route-map C2O
redistribute eigrp 1122 metric 100 subnets
network 200.110.245.2 0.0.0.0 area 2.2.2.2
-----------------
R4#sh run | sec router ospf
router ospf 1
router-id 40.40.40.4
log-adjacency-changes
redistribute connected subnets route-map C2O
network 200.110.245.4 0.0.0.0 area 2.2.2.2
network 211.110.184.4 0.0.0.0 area 2.2.2.2
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I tried a re-boot on R2,R4,and Cat1 but still same results
the EIGRP route is preferred leading to a routing loop for R4's loopback
address
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*Is this a bug or something? Did anyone have a similar output?*
------------------------------------------------------------------
--
Best Regards,
Saleh Hassan Batouq
[email protected]
Tel: +968 99365607
Fax: +968 2469690
P.O.Box:1083- Postal Code:112
Muscat-Sultanate Of Oman
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