[FROG] BGP state shows NoNeg for IPv4 LU neighbor

Kishore Aramalla karamalla at vmware.com
Thu Jul 12 13:40:55 EDT 2018


Thiruvazhiyan,
Here is a sample configuration

ip route 99.1.1.0/24 14.1.1.2
!
router-id 3.3.3.3
!
router bgp 200
 neighbor 2.2.2.2 remote-as 200
 neighbor 2.2.2.2 update-source 3.3.3.3
 !
 address-family ipv4 unicast
  redistribute static
  no neighbor 2.2.2.2 activate
  export vpn   >>>>You may be missing this in your configuration
 exit-address-family
 !
 address-family ipv4 labeled-unicast
  neighbor 2.2.2.2 activate
  neighbor 2.2.2.2 next-hop-self
  neighbor 2.2.2.2 route-map priv_rt out
 exit-address-family
!
ip prefix-list priv_rt seq 10 permit 99.1.1.0/24
!
route-map priv_rt permit 10
 match ip address prefix-list priv_rt
!
mpls label bind 99.1.1.0/24 3001
mpls label global-block 3001 4000

Best,
Kishore
-----Original Message-----
From: Kishore Aramalla 
Sent: Thursday, July 12, 2018 10:23 AM
To: 'Thiruvazhiyan Lakshmanan' <TL0041926 at TechMahindra.com>; Renato Westphal <renato at opensourcerouting.org>; frog at lists.frrouting.org
Cc: ANWER, MUHAMMAD B <bilal at research.att.com>; SHAIKH, AMAN <ashaikh at research.att.com>; LINGALA, AVINASH <ar977m at att.com>
Subject: RE: [FROG] BGP state shows NoNeg for IPv4 LU neighbor

Hi Thiruvazhiyan,

Your route-map configuration may be a problem here. I have FRR 5.1, the options available for address match are the following.
There is no way you can specify ip address in cidr format (10.10.100.11/32). This is treated as the access-list name.
You may wanna use prefix-list or an access list. I used prefix-list.

dev(config-route-map)# match ip address
  (1-199)      IP access-list number
  (1300-2699)  IP access-list number (expanded range)
  WORD         IP Access-list name                                             
  prefix-len   Match prefix length of ip address
  prefix-list  Match entries of prefix-lists

Best,
Kishore

-----Original Message-----
From: frog <frog-bounces at lists.frrouting.org> On Behalf Of Thiruvazhiyan Lakshmanan
Sent: Thursday, July 12, 2018 8:17 AM
To: Renato Westphal <renato at opensourcerouting.org>; frog at lists.frrouting.org
Cc: ANWER, MUHAMMAD B <bilal at research.att.com>; SHAIKH, AMAN <ashaikh at research.att.com>; LINGALA, AVINASH <ar977m at att.com>
Subject: Re: [FROG] BGP state shows NoNeg for IPv4 LU neighbor

Thanks Renato for your reply. The NoNeg issue is resolved now. but, the route advertisement to LU neighbor is not happening. I tried to add the mpls label bind entries, still no luck.

Is there any sample configuration to advertise the routes to LU peer. Is there a way to check whether the static label binding is installed in the route table before advertising into BGP.

Regards,
Thiruvazhiyan L

-----Original Message-----
From: Renato Westphal [mailto:renato at opensourcerouting.org]
Sent: Monday, July 9, 2018 2:59 PM
To: Thiruvazhiyan Lakshmanan
Cc: frog at lists.frrouting.org
Subject: Re: [FROG] BGP state shows NoNeg for IPv4 LU neighbor

Hi,

The NoNeg issue was fixed by this PR: https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FFRRouting%2Ffrr%2Fpull%2F2494&data=02%7C01%7Ckaramalla%40vmware.com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636670054970851853&sdata=h4qCNdUpSPYWDnL%2BUhO1FH0mP2Ra4TdqOo4zznvp%2BrE%3D&reserved=0

To advertise local BGP-LU routes, I believe you must create static MPLS bindings in zebra first. Example:

  mpls label global-block 1000 2000
  mpls label bind network 10.0.0.0/8 1001

Hope it helps,
Renato.

On Mon, Jul 9, 2018 at 3:50 PM, Thiruvazhiyan Lakshmanan <TL0041926 at techmahindra.com> wrote:
> Hi,
>
> I am trying to use FRR in my VM for BGP 3107 functionality. While 
> configuring the BGP neighbor with address family “ipv4 
> labeled-unicast”, the neighbor state shows NoNeg. But the peer side 
> router shows established. I also noticed the routes are learnt in FRR 
> from peer router and installed in the route table. But, I am trying to 
> advertise my VM loopback to the LU neighbor, which is not happening. Can someone help me on this?
>
>
>
> Below is the VM details,
>
> root at ubuntu4-4-VM2:~# uname -r
>
> 4.16.18-041618-generic
>
> root at ubuntu4-4-VM2:~# lsb_release -a
>
> No LSB modules are available.
>
> Distributor ID: Ubuntu
>
> Description:    Ubuntu 16.04.4 LTS
>
> Release:        16.04
>
> Codename:       xenial
>
> root at ubuntu4-4-VM2:~#
>
>
>
> FRR version:
>
> Total number of neighbors 1
>
> ubuntu4-4-VM2# show version
>
> FRRouting 5.0 (ubuntu4-4-VM2).
>
> Copyright 1996-2005 Kunihiro Ishiguro, et al.
>
> configured with:
>
>      '--build=x86_64-linux-gnu' '--prefix=/usr'
> '--includedir=${prefix}/include' '--mandir=${prefix}/share/man'
> '--infodir=${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var'
> '--disable-silent-rules' '--libexecdir=${prefix}/lib/frr'
> '--disable-maintainer-mode' '--disable-dependency-tracking'
> '--enable-exampledir=/usr/share/doc/frr/examples/'
> '--localstatedir=/var/run/frr' '--sbindir=/usr/lib/frr'
> '--sysconfdir=/etc/frr' '--disable-snmp' '--enable-ospfapi=yes'
> '--enable-multipath=256' '--enable-ldpd' '--disable-tcp-zebra'
> '--enable-fpm' '--enable-user=frr' '--enable-group=frr'
> '--enable-vty-group=frrvty' '--enable-configfile-mask=0640'
> '--enable-logfile-mask=0640' '--enable-werror' '--with-libpam'
> '--enable-systemd=yes' '--enable-poll=yes' '--enable-cumulus=no'
> '--enable-pimd' '--enable-dependency-tracking' '--enable-bgp-vnc=yes'
> '--disable-rpki' 'CFLAGS=-g -O2 -fPIE -fstack-protector-strong 
> -Wformat -Werror=format-security' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2'
> 'CXXFLAGS=-g -O2 -fPIE -fstack-protector-strong -Wformat 
> -Werror=format-security' 'FCFLAGS=-g -O2 -fPIE -fstack-protector-strong'
> 'FFLAGS=-g -O2 -fPIE -fstack-protector-strong' 'GCJFLAGS=-g -O2 -fPIE 
> -fstack-protector-strong' 'LDFLAGS=-Wl,-Bsymbolic-functions -fPIE -pie 
> -Wl,-z,relro -Wl,-z,now' 'OBJCFLAGS=-g -O2 -fPIE 
> -fstack-protector-strong -Wformat -Werror=format-security'
> 'OBJCXXFLAGS=-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security'
> 'build_alias=x86_64-linux-gnu'
>
> ubuntu4-4-VM2#
>
>
>
> FRR configuration,
>
> ubuntu4-4-VM2# sh running-config
>
> Building configuration...
>
>
>
> Current configuration:
>
> !
>
> frr version 5.0
>
> frr defaults traditional
>
> hostname ubuntu4-4-VM2
>
> log syslog informational
>
> no ip forwarding
>
> no ipv6 forwarding
>
> service integrated-vtysh-config
>
> username cumulus nopassword
>
> !
>
> interface lo
>
> ip address 10.10.100.11/32 label lo:10
>
> !
>
> router bgp 7018
>
> neighbor 10.10.101.1 remote-as 7018
>
> !
>
> address-family ipv4 unicast
>
>   network 10.0.0.0/8 label-index 3
>
>   no neighbor 10.10.101.1 activate
>
> exit-address-family
>
> !
>
> address-family ipv4 labeled-unicast
>
>   neighbor 10.10.101.1 activate
>
>   neighbor 10.10.101.1 next-hop-self
>
>   neighbor 10.10.101.1 route-map ADV_Lo10 out
>
> exit-address-family
>
> !
>
> route-map ADV_Lo10 permit 10
>
> match ip address 10.10.100.11/32
>
> match source-protocol connected
>
> !
>
> line vty
>
> !
>
> end
>
> ubuntu4-4-VM2# sh ip bg sum
>
>
>
> IPv4 Labeled Unicast Summary:
>
> BGP router identifier 10.10.100.11, local AS number 7018 vrf-id 0
>
> BGP table version 0
>
> RIB entries 0, using 0 bytes of memory
>
> Peers 1, using 20 KiB of memory
>
>
>
> Neighbor        V         AS MsgRcvd MsgSent   TblVer  InQ OutQ  Up/Down
> State/PfxRcd
>
> 10.10.101.1     4       7018    9337    8553        0    0    0 2d23h15m
> NoNeg
>
>
>
> Total number of neighbors 1
>
> ubuntu4-4-VM2#
>
> ubuntu4-4-VM2# show ip bgp ipv4 labeled-unicast neighbors 10.10.101.1 
> advertised-routes
>
> % No such neighbor or address family
>
> ubuntu4-4-VM2# show ip bgp ipv4 labeled-unicast neighbors 10.10.101.1 
> received-routes
>
> % No such neighbor or address family
>
> ubuntu4-4-VM2#
>
> Displayed  26 routes and 26 total paths
>
> ubuntu4-4-VM2# sh ip route
>
> Codes: K - kernel route, C - connected, S - static, R - RIP,
>
>        O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
>
>        T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
>
>        F - PBR,
>
>        > - selected route, * - FIB route
>
>
>
> K>* 0.0.0.0/0 [0/0] via 135.21.13.161, ens3, 2d23h58m
>
> B>* 10.10.100.1/32 [200/0] via 10.10.101.1, bond0.11, label 306384, 
> B>2d23h58m
>
> B>* 10.10.100.10/32 [200/0] via 10.10.101.1, bond0.11, label 306416,
> 2d23h58m
>
> C>* 10.10.100.11/32 is directly connected, lo, 2d23h58m
>
> C>* 10.10.101.0/30 is directly connected, bond0.11, 2d23h58m
>
> C>* 10.10.101.32/30 is directly connected, bond0.12, 2d23h58m
>
> B>* 10.10.101.36/30 [200/0] via 10.10.101.1, bond0.11, label 306432,
> 2d23h58m
>
> B>* 10.10.101.40/30 [200/0] via 10.10.101.1, bond0.11, label 306368,
> 2d23h58m
>
> B>* 10.10.252.1/32 [200/0] via 10.10.101.1, bond0.11, label 306048, 
> B>2d23h58m
>
> B>* 10.10.252.2/32 [200/0] via 10.10.101.1, bond0.11, label 306064, 
> B>2d23h58m
>
>
>
> Regards,
> Thiruvazhiyan L
>
>
>
> ======================================================================
> ======================================================
>
> Disclaimer:  This message and the information contained herein is 
> proprietary and confidential and subject to the Tech Mahindra policy 
> statement, you may review the policy at 
> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.te
> chmahindra.com%2FDisclaimer.html&data=02%7C01%7Ckaramalla%40vmware
> .com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd
> 62f0%7C1%7C0%7C636670054970851853&sdata=LrZOKo21Z9Dhlmb5mvITcbmYdV
> vbj2Gh2LEp3kEmuBE%3D&reserved=0 externally 
> https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftim.te
> chmahindra.com%2Ftim%2Fdisclaimer.html&data=02%7C01%7Ckaramalla%40vmware.com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636670054970851853&sdata=s8O8Bd%2FNgevNSFwQo167xQzpQVL2GjqFRhbcvuQ%2FNso%3D&reserved=0 internally within TechMahindra.
>
> ======================================================================
> ======================================================
>
>
> _______________________________________________
> frog mailing list
> frog at lists.frrouting.org
> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists
> .frrouting.org%2Flistinfo%2Ffrog&data=02%7C01%7Ckaramalla%40vmware
> .com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd
> 62f0%7C1%7C0%7C636670054970851853&sdata=CZ%2BglaorkVRdVMfsHOfSt7hU
> SKAAR%2FtE%2FmX41zq8OOQ%3D&reserved=0
>



--
Renato Westphal
============================================================================================================================

Disclaimer:  This message and the information contained herein is proprietary and confidential and subject to the Tech Mahindra policy statement, you may review the policy at https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.techmahindra.com%2FDisclaimer.html&data=02%7C01%7Ckaramalla%40vmware.com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636670054970851853&sdata=LrZOKo21Z9Dhlmb5mvITcbmYdVvbj2Gh2LEp3kEmuBE%3D&reserved=0 <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.techmahindra.com%2FDisclaimer.html&data=02%7C01%7Ckaramalla%40vmware.com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636670054970851853&sdata=LrZOKo21Z9Dhlmb5mvITcbmYdVvbj2Gh2LEp3kEmuBE%3D&reserved=0> externally https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftim.techmahindra.com%2Ftim%2Fdisclaimer.html&data=02%7C01%7Ckaramalla%40vmware.com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636670054970851853&sdata=s8O8Bd%2FNgevNSFwQo167xQzpQVL2GjqFRhbcvuQ%2FNso%3D&reserved=0 <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftim.techmahindra.com%2Ftim%2Fdisclaimer.html&data=02%7C01%7Ckaramalla%40vmware.com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636670054970851853&sdata=s8O8Bd%2FNgevNSFwQo167xQzpQVL2GjqFRhbcvuQ%2FNso%3D&reserved=0> internally within TechMahindra.

============================================================================================================================
_______________________________________________
frog mailing list
frog at lists.frrouting.org
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.frrouting.org%2Flistinfo%2Ffrog&data=02%7C01%7Ckaramalla%40vmware.com%7Cc7b07b8449bc4616832808d5e80aaf37%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636670054970861857&sdata=2ZQZMgIMtkg%2Bu4p9qXiYKqk8le%2FIjaKfjOtyzI9P1G0%3D&reserved=0


More information about the frog mailing list