MSDP

Hi group,

I'm studying on MSDP and build a test lab to test its functionality and
options. It seems that with or without MSDP configured sources from both
domains respond to the multicast source. Can anyone see what is going wrong,
I would expect without MSDP it wouldn't respond.

My setup
R1 R3
| |
R2---------R4
              |
             R5

R1, R2 are in domain 12
R3, R4, R5 are in domain 345

R1 and R2 are mcast receivers
R2 and R4 are the RP (autorp) for their domains
R5 is the multicast source

I block autorp between R2 and R4 to simulate the seperate domains

It seems R1 is registering to R2 and R2 forwards it to R4, because R4 has
that interface in it OIL

Below is the configuration and show commands of the rp's

#################R2###############

R2#show runn in lo 1
Building configuration...
Current configuration : 81 bytes
!
interface Loopback1
 ip address 7.7.2.2 255.255.255.0
 ip pim sparse-mode
end
R2#show runn int fa1/1
Building configuration...
Current configuration : 144 bytes
!
interface FastEthernet1/1
 ip address 24.24.24.2 255.255.255.0
 ip pim sparse-mode
 ip multicast boundary NO-RP
 duplex auto
 speed auto
end
R2#show runn | sec access-l
*Sep 1 14:39:20.163: %SYS-5-CONFIG_I: Configured from console by consoleip
access-list standard NO-RP
 deny 224.0.1.39
 deny 224.0.1.40
 permit any
R2#show runn int fa1/0
Building configuration...
Current configuration : 113 bytes
!
interface FastEthernet1/0
 ip address 7.7.12.2 255.255.255.0
 ip pim sparse-mode
 duplex auto
 speed auto
end
R2#sh runn | sec eigrp
router eigrp 12
 redistribute bgp 12 metric 1 1 1 1 1
 network 7.7.0.0 0.0.255.255
 no auto-summary
 redistribute eigrp 12
R2#sh runn | sec bgp
 redistribute bgp 12 metric 1 1 1 1 1
router bgp 12
 no synchronization
 bgp log-neighbor-changes
 redistribute eigrp 12
 neighbor 11.11.4.4 remote-as 345
 neighbor 11.11.4.4 ebgp-multihop 255
 neighbor 11.11.4.4 update-source Loopback1
 no auto-summary
R2#sh runn | in ip pim
 ip pim sparse-mode
 ip pim sparse-mode
 ip pim sparse-mode
ip pim autorp listener
ip pim send-rp-announce Loopback1 scope 15
ip pim send-rp-discovery Loopback1 scope 15
R2#
R2#
R2#
R2#sh ip pim rp map
PIM Group-to-RP Mappings
This system is an RP (Auto-RP)
This system is an RP-mapping agent (Loopback1)
Group(s) 224.0.0.0/4
  RP 7.7.2.2 (?), v2v1
    Info source: 7.7.2.2 (?), elected via Auto-RP
         Uptime: 01:20:17, expires: 00:02:19
R2#

#################R4###############

R4#show runn in lo 1
Building configuration...
Current configuration : 83 bytes
!
interface Loopback1
 ip address 11.11.4.4 255.255.255.0
 ip pim sparse-mode
end
R4#show runn int fa1/1
Building configuration...
Current configuration : 115 bytes
!
interface FastEthernet1/1
 ip address 11.11.34.4 255.255.255.0
 ip pim sparse-mode
 duplex auto
 speed auto
end
R4#show runn | sec access-l
ip access-list standard NO-RP
 deny 224.0.1.39
 deny 224.0.1.40
 permit any
R4#show runn int fa1/0
Building configuration...
Current configuration : 144 bytes
!
interface FastEthernet1/0
 ip address 24.24.24.4 255.255.255.0
 ip pim sparse-mode
 ip multicast boundary NO-RP
 duplex auto
 speed auto
end
R4#show runn int fa2/0
Building configuration...
Current configuration : 115 bytes
!
interface FastEthernet2/0
 ip address 11.11.45.4 255.255.255.0
 ip pim sparse-mode
 duplex auto
 speed auto
end
R4#sh runn | sec eigrp
router eigrp 345
 redistribute bgp 345 metric 1 1 1 1 1
 network 11.11.0.0 0.0.255.255
 no auto-summary
 redistribute eigrp 345
R4#sh runn | sec bgp
 redistribute bgp 345 metric 1 1 1 1 1
router bgp 345
 no synchronization
 bgp log-neighbor-changes
 redistribute eigrp 345
 neighbor 7.7.2.2 remote-as 12
 neighbor 7.7.2.2 ebgp-multihop 255
 neighbor 7.7.2.2 update-source Loopback1
 no auto-summary
R4#sh runn | in ip pim
 ip pim sparse-mode
 ip pim sparse-mode
 ip pim sparse-mode
 ip pim sparse-mode
ip pim autorp listener
ip pim send-rp-announce Loopback1 scope 15
ip pim send-rp-discovery Loopback1 scope 15
R4#show ip pim rp map
PIM Group-to-RP Mappings
This system is an RP (Auto-RP)
This system is an RP-mapping agent (Loopback1)
Group(s) 224.0.0.0/4
  RP 11.11.4.4 (?), v2v1
    Info source: 11.11.4.4 (?), elected via Auto-RP
         Uptime: 01:16:19, expires: 00:02:49
R4#

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Received on Wed Sep 01 2010 - 14:43:26 ART