nested route map processing

[verma-rohit]

Help sought in route map processing. Please consider the scenario below :

R1 -------R2  , eBGP peering

Route on R1

BGP routing table entry for 10.220.140.0/22, version 3
Paths: (1 available, best #1, table default)
Not advertised to any peer
Refresh Epoch 5
100
1.1.1.1 (metric 2) from 1.1.1.1 (1.1.1.1)
Origin IGP, metric 0, localpref 100, valid, external, best
Community: 163:7780 2002:4 2002:13 2002:100 2002:1001
rx pathid: 0, tx pathid: 0x0

There is route-map configured on R1  for R2. Shared below is the snippet:

route-map rm_blue_table_ab deny 120
match ip address prefix-list pl_more_specific_blue
match policy-list rp_other_block
!

ip prefix-list pl_more_specific_blue seq 900  permit 10.220.140.0/22 
ip prefix-list pl_more_specific_blue seq 1000 deny 0.0.0.0/0 le 32

ip policy-list rp_other_block permit
match community 110
!
ip community-list 110 deny _2002:1001_
ip community-list 110 deny _2002:18.._
ip community-list 110 permit _2002:1..._

My take:

I understood the prefix list but  logic of  route-map but a permit policy-list with a couple of deny statement confused me. Route is not getting advertised out though. 

[MHM Cisco World]

your route-map is deny 
your community-list is deny 
So I think as table above no action. 
instead use permit-deny 

[verma-rohit]

Well i know that but the policy-list is permitting it.

[MHM Cisco World]

this need to test you have 
deny (permit-deny) = deny (deny)
so you must test add one by one and see effect 

[MHM Cisco World]

I run lab and as I guess the issue is 
community permit/deny 
policy-list permit/deny
route-map permit/deny 

all above must config in seq that permit or deny update prefix otherwise the route-map will have no action at all.

[MHM Cisco World]

I will run lab tonight and update you

[paul driver]

Hello

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@verma-rohit wrote:
route-map rm_blue_table_ab deny 120

 Route is not getting advertised out though. 

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What we dont see is any other RM squence and what you have posted suggests that would coiside with the acl/rm logic
acl permit/rm deny = deny