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Replies

BGP not coming up Nexus 9000

TRACY HARTMANN
Beginner
Beginner

This Nexus seems to have different commands and the BGP is not coming up.   I don't show any neighbors or even like it is trying to come up.

Below is some information about the Nexus and the config

 

 Software
BIOS: version 08.32
NXOS: version 7.0(3)I4(7)
BIOS compile time: 10/18/2016
NXOS image file is: bootflash:///nxos.7.0.3.I4.7.bin
NXOS compile time: 6/28/2017 14:00:00 [06/29/2017 05:53:29]

cisco Nexus9000 C9504 (4 Slot) Chassis ("Supervisor Module")
Intel(R) Xeon(R) CPU E5-2403 v2 @ 1.80GHz with 16401184 kB of memory.
Processor Board ID FOC21413L60

feature bgp  (is this the only one I need on?  I was only using statics before)

 

router bgp 64649
log-neighbor-changes
address-family ipv4 unicast

Network 2.2.2.0 /24

neighbor 10.13.252.26
remote-as 64576
neighbor 10.13.252.27
remote-as 64577

Do I need a local router ID defined?

 

show ip bgp summary


BGP summary information for VRF default, address family IPv4 Unicast

 

Seems like I am missing something

 

 

 

 

 

 

 

 

 

2 Accepted Solutions

Accepted Solutions

Harold Ritter
Cisco Employee
Cisco Employee

Hi @TRACY HARTMANN ,

With NXOS, you need to enable the

address-family ipv4 unicast

under each neighbor.

 

router bgp 64649

neighbor 10.13.252.26

remote-as 64576

address-family ipv4 unicast

neighbor 10.13.252.27

remote-as 64577

address-family IPv4 unicast

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

View solution in original post

This fixed it thank you for your help.

View solution in original post

8 Replies 8

marce1000
VIP Mentor VIP Mentor
VIP Mentor

 

 - Review this document https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/6-x/unicast/configuration/guide/l3_cli_nxos/l3_bgp.html , check if the licensing requirements are met (too).

 M.

balaji.bandi
VIP Community Legend VIP Community Legend
VIP Community Legend

You need to provide more information here. is the nexus in vPC ? Do you have VRF ? Do you have neighbor IP reachability?

 

show bgp all

 

BB

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Georg Pauwen
VIP Master VIP Master
VIP Master

Hello,

feature bgp

is the only one you need. Try and add the neighbors under the main BGP process rather than the address family:

 

router bgp 64649
log-neighbor-changes
--> neighbor 10.13.252.26 remote-as 64576
--> neighbor 10.13.252.27 remote-as 64577
address-family ipv4 unicast

MHM Cisco World
Advisor
Advisor

if the neighbor is direct connect then OK if not please share the topology with some more info

Harold Ritter
Cisco Employee
Cisco Employee

Hi @TRACY HARTMANN ,

With NXOS, you need to enable the

address-family ipv4 unicast

under each neighbor.

 

router bgp 64649

neighbor 10.13.252.26

remote-as 64576

address-family ipv4 unicast

neighbor 10.13.252.27

remote-as 64577

address-family IPv4 unicast

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

This fixed it thank you for your help.

For NKOS the address family can config 

1- under router

2- under neighbor 

He already config it under router? Or this is bug?

Hi @MHM Cisco World 

This is not a bug. NXOS BGP configuration structure is closer to IOS-XR than IOS. 

1- The

address-family ipv4 unicast

section under router bgp is used to configure things that will apply to this address family as a whole, such as maximum-path, network statements, etc.

2- The

address-family ipv4 unicast

under the neighbor is to first and foremost activate the address family on the neighbor

(IOS uses neighbor x.x.x.x activate under address-family ipv4 uni) 

and secondly it is used to configure parameters related to the specific address family for this neighbor, such as

route-map, prefix-list, default-originate

etc.

Regards, 

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
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