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BGP command `neighbor x.x.x.x soft-reconfiguration inbound` works incorrectly #5

Open xivamar opened 7 years ago

xivamar commented 7 years ago

Problem Description:

BGP command neighbor x.x.x.x soft-reconfiguration inbound works incorrectly.

OpenSwitch version:

OpenSwitch 0.4.0 (Build: appliance-ops-0.4.0-master-20161024113601-dev)

Test Topology:

topologyipv4

Steps to reproduce the problem (see attached file):

  1. Configure DUTs as in attached file.

  2. Check adjacency and bgp routing table on DUT1. All routes should be in the tables.

      OpenSwitch-1# show ip bgp summary 
  BGP router identifier 102.0.0.2, local AS number 64500
  RIB entries 9
  Peers 2

  Neighbor             AS MsgRcvd MsgSent Up/Down  State
  101.0.0.1         64501      15      15 00:08:27 Established
  102.0.0.1         64502      15      18 00:08:23 Established
  OpenSwitch-1# 
  OpenSwitch-1# show ip bgp 
  Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
                i internal, S Stale, R Removed
  Origin codes: i - IGP, e - EGP, ? - incomplete

  Local router-id 102.0.0.2
     Network          Next Hop            Metric LocPrf Weight Path
  *> 100.0.0.0/23     0.0.0.0                  0      0  32768  i
  *> 101.0.0.0/20     101.0.0.1                0      0  32768 64501 i
  *> 101.0.0.0/20     102.0.0.1                0      0  32768 64501 i
  *> 102.0.0.0/21     101.0.0.1                0      0  32768 64501 64502 i
  *> 102.0.0.0/21     102.0.0.1                0      0  32768 64502 i
  *> 103.0.0.0/22     101.0.0.1                0      0  32768 64501 64503 i
  *> 103.0.0.0/22     102.0.0.1                0      0  32768 64501 64503 i
  *> 120.0.0.0/24     101.0.0.1                0      0  32768 64501 64503 i
  *> 120.0.0.0/24     102.0.0.1                0      0  32768 64501 64503 i
  Total number of entries 9
  OpenSwitch-1#

  3. Configure filter via prefix-list.

     OpenSwitch-1# configure terminal
 OpenSwitch-1(config)# ip prefix-list DUT4_in seq 5 deny 120.0.0.0/24
 OpenSwitch-1(config)# ip prefix-list DUT4_in seq 10 permit 0.0.0.0/0 le 32
 OpenSwitch-1(config)# router bgp 64500
 OpenSwitch-1(config-router)# neighbor 102.0.0.1 prefix-list DUT4_in in
 OpenSwitch-1(config-router)# end
 OpenSwitch-1# 
 OpenSwitch-1# clear bgp * soft in

  4. Check adjacency on DUT1. - NOK: session should be in Established state

     OpenSwitch-1#  show ip bgp summary 
 BGP router identifier 102.0.0.2, local AS number 64500
 RIB entries 5
 Peers 2

 Neighbor             AS MsgRcvd MsgSent Up/Down  State
 101.0.0.1         64501      27      32 00:00:54        Idle
 102.0.0.1         64502      27      30 00:00:54        Idle
 OpenSwitch-1#

gns_eBGP_IPv4_soft-reconfiguration.txt

ekgrish commented 7 years ago

related to: https://github.com/MERAprojects/ops-quagga/issues/8 https://github.com/MERAprojects/ops-quagga/issues/9

ekgrish commented 7 years ago

Pull request: https://github.com/MERAprojects/ops-quagga/pull/42