Dear list,
In Lab 24 task 24.6 the last bullet states that R1 must be the RP for
224.0.0.0 through 225.0.0.0
Now I know that because R9, R4 and R2 aren't the RP for these groups
R1 by means of a least specific match will be the RP for these groups.
But I want to be more specific about for which groups R1 can be the RP
and to accomplish this I apply a specific filter for R1 on the mapping
agent (R5).
!
ip access-list standard R1
permit 200.0.0.1
ip access-list standard R1_GROUPS
permit 224.0.0.0 1.255.255.255
!
ip access-list standard ALL_GROUPS
permit 224.0.0.0 15.255.255.255
ip access-list standard ALL_OTHERS
permit 200.0.0.9
permit 200.0.0.4
!
ip pim rp-announce-filter rp-list R1 group-list R1_GROUPS
ip pim rp-announce-filter rp-list ALL_OTHERS group-list ALL_GROUPS
!
Now I am expecting so see only the groups 224.0.0/7 for RP 200.0.0.1.
But still I see also 224.0.0.0/4 for RP 200.0.0.1 even though I
have it filtered out and haven't included it in the ALL_OTHERS
filter.
My question is what am I overlooking? because this doesn't jive
with my expectation.
R5#show ip pim rp mapping
PIM Group-to-RP Mappings
This system is an RP-mapping agent (Loopback0)
Group(s) 224.0.0.0/7
RP 200.0.0.1 (?), v2v1
Info source: 200.0.0.1 (?), elected via Auto-RP
Uptime: 00:01:23, expires: 00:02:33
Group(s) 224.0.0.0/4
<---- Still here?
RP 200.0.0.1 (?), v2v1
Info source: 200.0.0.1 (?), elected via Auto-RP
Uptime: 00:01:23, expires: 00:02:35
Group(s) 226.0.0.0/7
RP 200.0.0.2 (?), v2v1
Info source: 200.0.0.2 (?), elected via Auto-RP
Uptime: 00:01:56, expires: 00:02:01
Group(s) 228.0.0.0/8
RP 200.0.0.9 (?), v2v1
Info source: 200.0.0.9 (?), elected via Auto-RP
Uptime: 00:01:22, expires: 00:02:34
Group(s) 229.0.0.0/8
RP 200.0.0.2 (?), v2v1
Info source: 200.0.0.2 (?), elected via Auto-RP
Uptime: 00:01:56, expires: 00:02:01
Group(s) 230.0.0.0/8
RP 200.0.0.9 (?), v2v1
Info source: 200.0.0.9 (?), elected via Auto-RP
Uptime: 00:01:23, expires: 00:02:35
Group(s) 231.0.0.0/8
RP 200.0.0.2 (?), v2v1
Info source: 200.0.0.2 (?), elected via Auto-RP
Uptime: 00:01:58, expires: 00:01:59
Group(s) 232.0.0.0/5
RP 200.0.0.4 (?), v2v1
Info source: 200.0.0.4 (?), elected via Auto-RP
Uptime: 00:01:50, expires: 00:02:07
R5#
Cheers,
LJ
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