Topology:
Use configuration from Multicast task #2 as initial configuration for this task.
Requirements:
1. For this task, use standards based protocol for distributing RP information.
2. Router R3 should distribute of RP information, and router R2 should serve as a backup.
3. Routers R4 and R5 should be the RP for range 224.0.0.0 - 239.255.255.255. While both routers are active, the multicast groups should be equally load balanced between the two RPs.
4. RP information shall not be sent into VLAN 10.
Solution:
Highlight the text below to reveal the solution.
This task requires understanding of BSR protocol configuration.
Requirement #1 - BSR is standards based, vs Auto-RP which is Cisco proprietary.
Requirement #2 - Configure R3 and R2 as BSR-candidates, configure R3 with higher priority. Configure hash length to value different from default 32, to allow load balance between the RPs.
Requirement #3 - Configure R4 and R5 as RP candidates with equal priority.
Requirement #4 - on R6 and R7, configure BSR-border on VLAN 10 interface. Note that you must alter OSPF metrics, so VLAN 10 is never used as transit. Otherwise it may break a BSR information distribution due to RPF failure (log from R7, with R3 router shut down):
*Dec 28 13:05:12.923: PIM-BSR(0): bootstrap (13.0.2.2) on non-RPF path Loopback0 or from non-RPF neighbor 13.0.47.4 discarded
!
interface Ethernet0/0
bandwidth 100
ip address 13.0.10.2 255.255.255.0
ip pim bsr-border
ip pim sparse-mode
!
This task requires understanding of BSR protocol configuration.
Requirement #1 - BSR is standards based, vs Auto-RP which is Cisco proprietary.
Requirement #2 - Configure R3 and R2 as BSR-candidates, configure R3 with higher priority. Configure hash length to value different from default 32, to allow load balance between the RPs.
Requirement #3 - Configure R4 and R5 as RP candidates with equal priority.
Requirement #4 - on R6 and R7, configure BSR-border on VLAN 10 interface. Note that you must alter OSPF metrics, so VLAN 10 is never used as transit. Otherwise it may break a BSR information distribution due to RPF failure (log from R7, with R3 router shut down):
*Dec 28 13:05:12.923: PIM-BSR(0): bootstrap (13.0.2.2) on non-RPF path Loopback0 or from non-RPF neighbor 13.0.47.4 discarded
R2:
!
ip pim bsr-candidate Loopback0 24 254
!
R3:
router pim
address-family ipv4
..
!
bsr candidate-bsr 13.0.3.3 hash-mask-len 24 priority 255
!
!
R4:
RP/0/0/CPU0:R4#show run router pim
Mon Dec 28 16:14:48.754 UTC
router pim
address-family ipv4
..
bsr candidate-rp 13.0.4.4 priority 1 interval 60
!
!
R5:
!
ip pim rp-candidate Loopback0 priority 1
!
R6:
!
interface Ethernet0/1
bandwidth 100
ip address 13.0.10.6 255.255.255.0
ip pim bsr-border
ip pim sparse-mode
ip igmp query-max-response-time 5
ip igmp query-interval 10
!
R7:
!
interface Ethernet0/0
bandwidth 100
ip address 13.0.10.2 255.255.255.0
ip pim bsr-border
ip pim sparse-mode
!
Verification:
R1#sh ip pim rp mapping
PIM Group-to-RP Mappings
Group(s) 224.0.0.0/4
RP 13.0.4.4 (?), v2
Info source: 13.0.3.3 (?), via bootstrap, priority 1, holdtime 150
Uptime: 00:30:59, expires: 00:02:13
RP 13.0.5.5 (?), v2
Info source: 13.0.3.3 (?), via bootstrap, priority 1, holdtime 150
Uptime: 00:31:28, expires: 00:02:13
Group(s): 224.0.0.0/4, Static
RP: 13.0.3.3 (?)
R1#sh ip pim rp-hash 224.0.0.1
RP 13.0.5.5 (?), v2
Info source: 13.0.3.3 (?), via bootstrap, priority 1, holdtime 150
Uptime: 00:31:53, expires: 00:01:48
PIMv2 Hash Value (mask 255.255.255.0)
RP 13.0.4.4, via bootstrap, priority 1, hash value 1563362354
RP 13.0.5.5, via bootstrap, priority 1, hash value 1639391941
R1#sh ip pim rp-hash 224.0.1.1
RP 13.0.4.4 (?), v2
Info source: 13.0.3.3 (?), via bootstrap, priority 1, holdtime 150
Uptime: 00:31:25, expires: 00:01:46
PIMv2 Hash Value (mask 255.255.255.0)
RP 13.0.4.4, via bootstrap, priority 1, hash value 1700136242
RP 13.0.5.5, via bootstrap, priority 1, hash value 1564559813
R1#sh ip pim rp-hash 224.0.2.1
RP 13.0.5.5 (?), v2
Info source: 13.0.3.3 (?), via bootstrap, priority 1, holdtime 150
Uptime: 00:31:57, expires: 00:01:44
PIMv2 Hash Value (mask 255.255.255.0)
RP 13.0.4.4, via bootstrap, priority 1, hash value 1784927794
RP 13.0.5.5, via bootstrap, priority 1, hash value 1860957381
R1#sh ip pim rp-hash 224.0.3.1
RP 13.0.4.4 (?), v2
Info source: 13.0.3.3 (?), via bootstrap, priority 1, holdtime 150
Uptime: 00:31:29, expires: 00:01:42
PIMv2 Hash Value (mask 255.255.255.0)
RP 13.0.4.4, via bootstrap, priority 1, hash value 311088946
RP 13.0.5.5, via bootstrap, priority 1, hash value 175512517
