EIGRP SOO Question

Hello All,

I am going through the MPLS section of the workbook and am at the EIGRP SOO task. My EIGRP configuration is stable from PE-CE but after reading through the solution it seems unclear to me. Basically how I understand this is that if you have the same SOO the route should be discarded. I tested this by configuring the same SOO value and the route is still accepted. Therefore maybe my understanding isn't clear. Below is the output from R6. As you can see both networks have the same SOO configured.

(For this task R7 and R8 have a backdoor link through Gig1.78 as well as an EIGRP connection through their VPN interfaces (Gig1.67))

 

R6#show bgp vpnv4 unicast vrf VPN_A 155.1.67.7
BGP routing table entry for 100:1:155.1.67.0/24, version 23
Paths: (1 available, best #1, table VPN_A)
  Advertised to update-groups:
     1        
  Refresh Epoch 1
  Local
    0.0.0.0 from 0.0.0.0 (150.1.6.6)
      Origin incomplete, metric 0, localpref 100, weight 32768, valid, sourced, best
      Extended Community: SoO:100:16 RT:100:1 Cost:pre-bestpath:128:281600
        0x8800:32768:0 0x8801:100:25600 0x8802:65280:256000 0x8803:65281:1500
        0x8806:0:2516664898
      mpls labels in/out 21/nolabel(VPN_A)
R6#show bgp vpnv4 unicast vrf VPN_A 155.1.67.0
BGP routing table entry for 100:1:155.1.67.0/24, version 23
Paths: (1 available, best #1, table VPN_A)
  Advertised to update-groups:
     1        
  Refresh Epoch 1
  Local
    0.0.0.0 from 0.0.0.0 (150.1.6.6)
      Origin incomplete, metric 0, localpref 100, weight 32768, valid, sourced, best
      Extended Community: SoO:100:16 RT:100:1 Cost:pre-bestpath:128:281600
        0x8800:32768:0 0x8801:100:25600 0x8802:65280:256000 0x8803:65281:1500
        0x8806:0:2516664898
      mpls labels in/out 21/nolabel(VPN_A)
R6#show bgp vpnv4 unicast vrf VPN_A 155.1.58.0
BGP routing table entry for 100:1:155.1.58.0/24, version 80
Paths: (1 available, best #1, table VPN_A)
  Not advertised to any peer
  Refresh Epoch 1
  Local
    150.1.5.5 (metric 21) from 150.1.4.4 (150.1.4.4)
      Origin incomplete, metric 0, localpref 100, valid, internal, best
      Extended Community: SoO:100:16 RT:100:1 Cost:pre-bestpath:128:281600
        0x8800:32768:0 0x8801:100:25600 0x8802:65280:256000 0x8803:65281:1500
        0x8806:0:2886731013
      Originator: 150.1.5.5, Cluster list: 150.1.4.4
      mpls labels in/out nolabel/20
R6#

 

Now when I go to look at R7's routing table I shouldn't see the 155.1.58.8 route in the routing table. But I do.

 

R7#show ip route 155.1.58.8
Routing entry for 155.1.58.0/24
  Known via "eigrp 100", distance 90, metric 2841600, type internal
  Redistributing via eigrp 100
  Last update from 155.1.78.8 on Ethernet0/0.78, 00:11:44 ago
  Routing Descriptor Blocks:
  * 155.1.78.8, from 155.1.78.8, 00:11:44 ago, via Ethernet0/0.78
      Route metric is 2841600, traffic share count is 1
      Total delay is 101000 microseconds, minimum bandwidth is 10000 Kbit
      Reliability 255/255, minimum MTU 1500 bytes
      Loading 1/255, Hops 1
R7#show ip route eigrp
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      150.1.0.0/32 is subnetted, 4 subnets
D        150.1.8.8 [90/2944000] via 155.1.78.8, 00:11:49, Ethernet0/0.78
D EX     150.1.55.55 [170/2560025856] via 155.1.67.6, 00:11:49, Ethernet0/0.67
D EX     150.1.66.66 [170/2560025856] via 155.1.67.6, 00:11:49, Ethernet0/0.67
      155.1.0.0/16 is variably subnetted, 13 subnets, 2 masks
D        155.1.8.0/24 [90/2841600] via 155.1.78.8, 00:11:49, Ethernet0/0.78
D        155.1.58.0/24 [90/2841600] via 155.1.78.8, 00:11:49, Ethernet0/0.78
D        155.1.108.0/24 [90/2841600] via 155.1.78.8, 00:11:49, Ethernet0/0.78
      172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
D        172.16.8.0/24 [90/2944000] via 155.1.78.8, 00:11:49, Ethernet0/0.78
D EX  192.168.6.0/24 [170/2562585856] via 155.1.78.8, 00:11:49, Ethernet0/0.78
D EX  192.168.7.0/24 [170/2562585856] via 155.1.78.8, 00:11:49, Ethernet0/0.78
R7#

 

R7#show route-map
route-map SOO, permit, sequence 10
  Match clauses:
  Set clauses:
    extended community SoO:100:16
  Policy routing matches: 0 packets, 0 bytes
R7#show run int e0/0.78
Building configuration...

Current configuration : 145 bytes
!
interface Ethernet0/0.78
 encapsulation dot1Q 78
 ip vrf sitemap SOO
 ip address 155.1.78.7 255.255.255.0
 ip ospf cost 9999
 delay 10000
end

R7#

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