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Route-map allowing/redistributing all connected routes initially till 30sec-1min in BGP.

fsyed0001
Beginner
Beginner

Hi Expert,

I am using using Route-map in BGP redistribution and wants to allow one directly connected N/w but the problem encountering initially is route-map redistributing all N/ws and after 30sec to 1 min it start redistributing the right prefix meaning 192.168.10.0/24 in below mentioned example.

router bgp 12

 bgp log-neighbor-changes

 redistribute connected route-map ALLOW-NETWORKS

 neighbor 172.16.200.10 remote-as 10

 neighbor 172.16.200.10 password BGPpassword

 neighbor 172.16.200.11 remote-as 11

 neighbor 172.16.200.11 password BGPpassword

!

!

virtual-service csr_mgmt

 ip shared host-interface GigabitEthernet1

 activate

!

ip-172-31-20-75# show ip bgp

BGP table version is 19, local router ID is 192.168.12.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, 

              r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter, 

              x best-external, a additional-path, c RIB-compressed, 

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

     Network          Next Hop            Metric LocPrf Weight Path

 *>  172.16.200.0/24  0.0.0.0                  0         32768 ?

 *>  172.31.16.0/20   0.0.0.0                  0         32768 ?

 *>  192.168.10.0     172.16.200.10            0             0 10 ?

 *                    172.16.200.10                          0 11 13 10 ?

 *>  192.168.12.0     0.0.0.0                  0         32768 ?

 *   192.168.13.0     172.16.200.13                          0 11 13 ?

 *>                   172.16.200.13                          0 10 13 ?

!

route-map ALLOW-NETWORKS permit 10

 match ip address prefix-list ALLOW-PREFIXES

!

route-map ALLOW-NETWORKS deny 20

!

ip prefix-list ALLOW-PREFIXES seq 5 permit 192.168.10.0/24

!

CSR1000V-NEW#show ip bgp neighbors 172.16.200.12 advertised-routes 

BGP table version is 43, local router ID is 192.168.202.202

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, 

              r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter, 

              x best-external, a additional-path, c RIB-compressed, 

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

     Network          Next Hop            Metric LocPrf Weight Path

 *>  10.0.0.0/24      0.0.0.0                  0         32768 ?

 *>  172.16.200.0/24  0.0.0.0                  0         32768 ?

 *>  192.168.10.0     0.0.0.0                  0         32768 ?

 *>  192.168.11.0     172.16.200.11                          0 12 11 ?

 *>  192.168.12.0     172.16.200.12            0             0 12 ?

 *>  192.168.13.0     172.16.200.13            0             0 13 ?

CSR1000V-NEW#show ip bgp neighbors 172.16.200.12 advertised-routes 

BGP table version is 41, local router ID is 192.168.202.202

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, 

              r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter, 

              x best-external, a additional-path, c RIB-compressed, 

Origin codes: i - IGP, e - EGP, ? - incomplete

RPKI validation codes: V valid, I invalid, N Not found

     Network          Next Hop            Metric LocPrf Weight Path

 *>  192.168.10.0     0.0.0.0                  0         32768 ?

 *>  192.168.11.0     172.16.200.11                          0 12 11 ?

 *>  192.168.12.0     172.16.200.12            0             0 12 ?

 *>  192.168.13.0     172.16.200.13            0             0 13 ?

Total number of prefixes 4 

Regards

Syed.

6 Replies 6

Philip D'Ath
Advisor
Advisor

What router is this and what software version are you running?

This is Cisco CSR1000V and running Version 03.16.02.S.

show version 

Cisco IOS XE Software, Version 03.16.02.S - Extended Support Release

Cisco IOS Software, CSR1000V Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 15.5(3)S2, RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2016 by Cisco Systems, Inc.

Compiled Thu 11-Feb-16 09:00 by mcpre

Cisco IOS-XE software, Copyright (c) 2005-2016 by cisco Systems, Inc.

All rights reserved.  Certain components of Cisco IOS-XE software are

licensed under the GNU General Public License ("GPL") Version 2.0.  The

software code licensed under GPL Version 2.0 is free software that comes

with ABSOLUTELY NO WARRANTY.  You can redistribute and/or modify such

GPL code under the terms of GPL Version 2.0.  For more details, see the

documentation or "License Notice" file accompanying the IOS-XE software,

or the applicable URL provided on the flyer accompanying the IOS-XE

software.

ROM: IOS-XE ROMMON

CSR1000V-AZURE uptime is 6 days, 6 hours, 30 minutes

Uptime for this control processor is 6 days, 6 hours, 34 minutes

System returned to ROM by reload

System image file is "bootflash:packages.conf"

Last reload reason: <NULL>

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

License Level: ax

License Type: Permanent

Next reload license Level: ax

cisco CSR1000V (VXE) processor (revision VXE) with 2263907K/6147K bytes of memory.

Processor board ID 9NGOBUZVSSS

2 Gigabit Ethernet interfaces

32768K bytes of non-volatile configuration memory.

7083640K bytes of physical memory.

7774207K bytes of virtual hard disk at bootflash:.

Configuration register is 0x2102

 

Currently we couldn't upgrade but could u please confirm there is nothing missing with respect to configuration or is there any known issue reported.

Regards

Syed.

Based on what I can see I can not see an issue.

Hi Philip,

Is there any way we can check internally with the Development or BU as we are continuously seeing this behaviour and can be reproduce very easily and can share the setup on request.

Regards

Syed.

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