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BGP peer doesn't work with Nexus 9K's
Posted: Tue Feb 20, 2018 2:43 pm
by ejeangilles
Has anyone experience routers not being able to peer with BGP to Nexus 9K's?
This is get the message I get on my routers. This happens whether I peer with the directly connected interfaces or loopbacks.
Connectivity is fine but just not able to peer. I get constantly get the msg "%BGP-5-NBR_RESET: Neighbor active reset (Peer closed the session)
%BGP_SESSION-5-ADJCHANGE: neighbor IPv4 Unicast topology base removed from session Peer closed the session"
Re: BGP peer doesn't work with Nexus 9K's
Posted: Tue Feb 20, 2018 9:36 pm
by Uldis (UD)
works mate
router ospf 1
router-id 1.1.1.1
router bgp 65000
router-id 1.1.1.1
address-family ipv4 unicast
network 1.1.1.1/32
neighbor 2.2.2.2
remote-as 65000
update-source loopback0
address-family ipv4 unicast
Re: BGP peer doesn't work with Nexus 9K's
Posted: Tue Feb 20, 2018 10:39 pm
by ejeangilles
Ok. By chance can you tell me what IOS version and image your running on those 2 devices. I would like to duplicate it in my lab.
Re: BGP peer doesn't work with Nexus 9K's
Posted: Wed Feb 21, 2018 1:29 am
by Uldis (UD)
Code: Select all
Nexus 9000v is a demo version of the Nexus Operating System
Software
BIOS: version
NXOS: version 7.0(3)I7(2)
BIOS compile time:
NXOS image file is: bootflash:///nxos.7.0.3.I7.2.bin
NXOS compile time: 11/22/2017 13:00:00 [11/22/2017 21:55:29]
Code: Select all
Cisco IOS Software, Linux Software (I86BI_LINUX-ADVENTERPRISEK9-M), Version 15.4(2)T4, DEVELOPMENT TEST SOFTWARE
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Thu 08-Oct-15 21:21 by prod_rel_team
BGP cfg on NX-OS
Code: Select all
router bgp 65000
router-id 1.1.1.1
address-family ipv4 unicast
neighbor 2.2.2.2
remote-as 65000
update-source loopback0
address-family ipv4 unicast
BGP on IOL 15.4.2
Code: Select all
router bgp 65000
bgp router-id 2.2.2.2
bgp log-neighbor-changes
neighbor 1.1.1.1 remote-as 65000
neighbor 1.1.1.1 update-source Loopback0
!
address-family ipv4
network 2.2.2.2 mask 255.255.255.255
neighbor 1.1.1.1 activate
exit-address-family
Code: Select all
NX1# sh ip bgp summary
BGP summary information for VRF default, address family IPv4 Unicast
BGP router identifier 1.1.1.1, local AS number 65000
BGP table version is 3, IPv4 Unicast config peers 1, capable peers 1
0 network entries and 0 paths using 0 bytes of memory
BGP attribute entries [0/0], BGP AS path entries [0/0]
BGP community entries [0/0], BGP clusterlist entries [0/0]
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
2.2.2.2 4 65000 8 7 3 0 0 00:03:41 0
NX1#
Code: Select all
Router#sh ip bgp summary
BGP router identifier 2.2.2.2, local AS number 65000
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
1.1.1.1 4 65000 6 5 1 0 0 00:00:57 0
Router#
Re: BGP peer doesn't work with Nexus 9K's
Posted: Wed Feb 21, 2018 8:11 pm
by ejeangilles
Thanks. It looks like what I have. The only thing I can think of is the Nexus Qemu Nic settings. Should it be set to tpl(e1000).
See attached.
Re: BGP peer doesn't work with Nexus 9K's
Posted: Wed Feb 21, 2018 10:00 pm
by Uldis (UD)
correct tple1000
Re: BGP peer doesn't work with Nexus 9K's
Posted: Thu Feb 22, 2018 3:07 am
by ejeangilles
I installed EVE on different computer and tried the same setup and I still get the same thing. Im also on the latest EVE version.
This is Nexus code I'm running and configuration......
Nexus 9000v is a demo version of the Nexus Operating System
Software
BIOS: version
NXOS: version 7.0(3)I7(3)
BIOS compile time:
NXOS image file is: bootflash:///nxos.7.0.3.I7.3.bin
NXOS compile time: 2/12/2018 13:00:00 [02/12/2018 19:13:48]
router bgp 100
address-family ipv4 unicast
neighbor 1.1.1.2
remote-as 100
This is the IOL version I'm running and the config......
Cisco IOS Software, Linux Software (I86BI_LINUX-ADVENTERPRISEK9-M), Version 15.4(1)T, DEVELOPMENT TEST SOFTWARE
Router uptime is 1 hour, 31 minutes
System returned to ROM by reload at 0
System image file is "unix:/opt/unetlab/addons/iol/bin/i86bi-linux-l3-adventerprisek9-15.4"
Last reload reason: Unknown reason
router bgp 100
bgp log-neighbor-changes
neighbor 1.1.1.1 remote-as 100
!
address-family ipv4
neighbor 1.1.1.1 activate
Please let me know anything I can try or look at...
Re: BGP peer doesn't work with Nexus 9K's
Posted: Thu Feb 22, 2018 7:47 pm
by Uldis (UD)
could you please use exact CFGs what I shown above.....
your bgp cfgs has shortage...
look at my cfg
router bgp 65000
router-id 1.1.1.1
address-family ipv4 unicast
neighbor 2.2.2.2
remote-as 65000
update-source loopback0
address-family ipv4 unicast
nexus, those address family commands, 2 times is a MUST....
Re: BGP peer doesn't work with Nexus 9K's
Posted: Thu Feb 22, 2018 8:43 pm
by ejeangilles
Wow. That worked. That simple config was right in front of my eyes. Thanks so much for pointing me in the right directions. YOU DA MAN!!!