Hi Sakthivel
Thanks for reply .. One problem gone .. One still pending ( "no bgp
default ipv4-unicast " helped in bring session UP)
I am once again posting my config ..... My session comes up ..
But somehow IPV6 routes advertised by CE are not received on PE
R1 (CE)
======
R1(config)#do sh run | sec router bgp
router bgp 100
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor 10.0.0.2 remote-as 200
!
address-family ipv4
no synchronization
no auto-summary
exit-address-family
!
address-family ipv6
no synchronization
network 2001::1/128
neighbor 10.0.0.2 activate
exit-address-family
R1(config)#
R2 (PE)
======
R2(config)#do sh run | sec router bgp
router bgp 200
no bgp default ipv4-unicast
bgp log-neighbor-changes
!
address-family ipv4 vrf TEST
no synchronization
exit-address-family
!
address-family ipv6 vrf TEST
no synchronization
neighbor 10.0.0.1 remote-as 100
neighbor 10.0.0.1 activate
exit-address-family
R2(config)#
R2#sh bgp vpnv4 unicast vrf TEST summary
R2#sh ipv6 route vr
R2#sh ipv6 route vrf TEST
IPv6 Routing Table - TEST - 3 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
B - BGP, R - RIP, I1 - ISIS L1, I2 - ISIS L2
IA - ISIS interarea, IS - ISIS summary, D - EIGRP, EX - EIGRP
external
ND - Neighbor Discovery
O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
C 2001:12::/64 [0/0]
via FastEthernet1/0, directly connected
L 2001:12::2/128 [0/0]
via FastEthernet1/0, receive
L FF00::/8 [0/0]
via Null0, receive
R2#
PLease let me know if more configs are desired.
Thanks
Gaurav Madan
On Fri, Jan 20, 2012 at 10:47 AM, Sakthivel <sakthi.cloud_at_gmail.com> wrote:
> Gaurav
>
>
>
> I have tested and works, the problem i think is that in your R5 router
> configuration since you have not used *no bgp default ipv4 unicast* and
> you have activated IPV4 under IPV6 address family which is right R5
> router trying to use Global ipv4 BGP config to negotiate capability
> obliviously there are 2 different capability and it will not form neighbor
>
>
> Try using no BGP default IPV4 unicast , if you still face problem please
> send us the debug
>
> Thansk and regards
> Sakthivel , CCIE # 7675 (R&S and SP V3)
>
>
>
>
>
> On Fri, Jan 20, 2012 at 12:01 AM, Brian McGahan <bmcgahan_at_ine.com> wrote:
>
>> Post your "debug ip bgp". This will show what the error is during the
>> capabilities exchange.
>>
>> Brian McGahan, CCIE #8593 (R&S/SP/Security)
>> bmcgahan_at_INE.com<mailto:bmcgahan_at_INE.com>
>>
>>
>> Internetwork Expert, Inc.
>> http://www.INE.com
>>
>>
>> From: GAURAV MADAN [mailto:gauravmadan1177_at_gmail.com]
>> Sent: Thursday, January 19, 2012 12:01 PM
>> To: Brian McGahan
>> Cc: Cisco certification
>> Subject: Re: BGP for address-family ipv6 issue
>>
>> I think this is i did Brian ..
>>
>> Forget next-hop for BGP learned routes .. my PE-CE session is giving
>> following
>> error :
>>
>> *Jan 18 22:51:34.291: %BGP-3-NOTIFICATION: received from neighbor 40.0.0.1
>> active 2/8 (no supported AFI/SAFI) 3 bytes 000101 (timer expired)
>>
>> What address-family is mismatched ..
>>
>> My configs are in earlier email ..
>>
>> Thnx
>> Gaurav MAdan
>> On Thu, Jan 19, 2012 at 11:26 PM, Brian McGahan
>> <bmcgahan_at_ine.com<mailto:bmcgahan_at_ine.com>> wrote:
>> If you use IPv4 as the transport you need to manually set the next-hop of
>> the
>> BGP learned routes to an IPv6 address. Here is an example config from my
>> CCIE
>> SPv3 Advanced Technologies Class. The topology is:
>>
>> R1--R2---MPLS---XR1--XR2
>>
>> R1 and XR2 are the CEs, R2 and XR1 are the PEs running 6VPE. Note that
>> on IOS
>> XR you don't need to change the next-hop to IPv6, it fixes this
>> automatically.
>>
>> R1:
>> ip cef
>> ipv6 unicast-routing
>> ipv6 cef
>> !
>> interface Loopback0
>> ip address 10.1.1.1 255.255.255.255
>> ipv6 address 2001:10:1:1::1/128
>> !
>> interface FastEthernet0/0
>> ip address 10.1.2.1 255.255.255.0
>> ipv6 address 2001:10:1:2::1/64
>> !
>> router bgp 1
>> network 10.1.1.1 mask 255.255.255.255
>> neighbor 10.1.2.2 remote-as 100
>> !
>> address-family ipv6
>> network 2001:10:1:1::1/128
>> neighbor 10.1.2.2 activate
>> neighbor 10.1.2.2 route-map 6VPE in
>> exit-address-family
>> !
>> route-map 6VPE permit 10
>> set ipv6 next-hop 2001:10:1:2::2
>>
>> R2:
>> vrf definition A
>> rd 100:1
>> !
>> address-family ipv4
>> route-target export 100:1
>> route-target import 100:1
>> exit-address-family
>> !
>> address-family ipv6
>> route-target export 100:1
>> route-target import 100:1
>> exit-address-family
>> !
>> ip cef
>> ipv6 unicast-routing
>> ipv6 cef
>> !
>> interface Loopback0
>> ip address 20.2.2.2 255.255.255.255
>> !
>> interface FastEthernet1/0
>> vrf forwarding A
>> ip address 10.1.2.2 255.255.255.0
>> ipv6 address 2001:10:1:2::2/64
>> !
>> router bgp 100
>> no bgp default ipv4-unicast
>> neighbor 10.1.2.1 remote-as 1
>> neighbor 20.19.19.19 remote-as 100
>> neighbor 20.19.19.19 update-source Loopback0
>> !
>> address-family vpnv4
>> neighbor 20.19.19.19 activate
>> neighbor 20.19.19.19 send-community extended
>> exit-address-family
>> !
>> address-family vpnv6
>> neighbor 20.19.19.19 activate
>> neighbor 20.19.19.19 send-community extended
>> exit-address-family
>> !
>> address-family ipv4 vrf A
>> neighbor 10.1.2.1 remote-as 1
>> neighbor 10.1.2.1 activate
>> exit-address-family
>> !
>> address-family ipv6 vrf A
>> neighbor 10.1.2.1 remote-as 1
>> neighbor 10.1.2.1 activate
>> neighbor 10.1.2.1 route-map 6VPE in
>> exit-address-family
>> !
>> route-map 6VPE permit 10
>> set ipv6 next-hop 2001:10:1:2::1
>>
>> XR1:
>> vrf A
>> address-family ipv4 unicast
>> import route-target
>> 100:1
>> !
>> export route-target
>> 100:1
>> !
>> !
>> address-family ipv6 unicast
>> import route-target
>> 100:1
>> !
>> export route-target
>> 100:1
>> !
>> !
>> !
>> interface Loopback0
>> ipv4 address 20.19.19.19 255.255.255.255
>> !
>> interface GigabitEthernet0/1/0/2
>> vrf A
>> ipv4 address 10.19.20.19 255.255.255.0
>> ipv6 address 2001:10:19:20::19/64
>> !
>> route-policy PASS
>> pass
>> end-policy
>> !
>> router bgp 100
>> address-family vpnv4 unicast
>> !
>> address-family vpnv6 unicast
>> !
>> neighbor 20.2.2.2
>> remote-as 100
>> update-source Loopback0
>> address-family vpnv4 unicast
>> !
>> address-family vpnv6 unicast
>> !
>> !
>> vrf A
>> rd 100:1
>> address-family ipv4 unicast
>> !
>> address-family ipv6 unicast
>> !
>> neighbor 10.19.20.20
>> remote-as 20
>> address-family ipv4 unicast
>> route-policy PASS in
>> route-policy PASS out
>> !
>> address-family ipv6 unicast
>> route-policy PASS in
>> route-policy PASS out
>> !
>> !
>> !
>> !
>>
>> XR2:
>> interface Loopback0
>> ipv4 address 10.20.20.20 255.255.255.255
>> ipv6 address 2001:10:20:20::20/128
>> !
>> interface GigabitEthernet0/4/0/2
>> ipv4 address 10.19.20.20 255.255.255.0
>> ipv6 address 2001:10:19:20::20/64
>> !
>> route-policy PASS
>> pass
>> end-policy
>> !
>> router bgp 20
>> address-family ipv4 unicast
>> network 10.20.20.20/32<http://10.20.20.20/32>
>>
>> !
>> address-family ipv6 unicast
>> network 2001:10:20:20::20/128
>> !
>> neighbor 10.19.20.19
>> remote-as 100
>> address-family ipv4 unicast
>> route-policy PASS in
>> route-policy PASS out
>> !
>> address-family ipv6 unicast
>> route-policy PASS in
>> route-policy PASS out
>> !
>> !
>> !
>>
>> HTH,
>>
>> Brian McGahan, CCIE #8593 (R&S/SP/Security)
>> bmcgahan_at_INE.com<mailto:bmcgahan_at_INE.com>
>>
>>
>> Internetwork Expert, Inc.
>> http://www.INE.com
>>
>>
>> -----Original Message-----
>> From: nobody_at_groupstudy.com<mailto:nobody_at_groupstudy.com>
>> [mailto:nobody_at_groupstudy.com<mailto:nobody_at_groupstudy.com>] On Behalf Of
>> GAURAV MADAN
>> Sent: Thursday, January 19, 2012 11:35 AM
>> To: Cisco certification
>> Subject: Re: BGP for address-family ipv6 issue
>>
>> Thnx to all who responded ..
>>
>> This is a part of 6VPE thing that I am doing and I think that what I am
>> doing
>> is right .
>>
>> We can have a either IPV4 neighbor relationship between a PE and CE and
>> advertise a IPV6 prefix from CE Or We can have a IPV6 neighbor
>> relationship
>> between PE and a CE and advertise a IPV6 prefix from CE
>>
>> Option B work for me .. However Option A is giving problems
>>
>> Any comments
>>
>> Thnx in advance
>> Gaurav Madan
>>
>> On Thu, Jan 19, 2012 at 11:24 AM, GAURAV MADAN
>> <gauravmadan1177_at_gmail.com<mailto:gauravmadan1177_at_gmail.com>>wrote:
>>
>>
>> > Any idea experts ..?
>> >
>> >
>> >
>> > ---------- Forwarded message ----------
>> > From: GAURAV MADAN
>> <gauravmadan1177_at_gmail.com<mailto:gauravmadan1177_at_gmail.com>>
>> > Date: Wed, Jan 18, 2012 at 10:56 PM
>> > Subject: BGP for address-family ipv6 issue
>> > To: Cisco certification
>> <ccielab_at_groupstudy.com<mailto:ccielab_at_groupstudy.com>>
>> >
>> >
>> > Hi All
>> >
>> > I have a very simple setup as follows . My intent is to let BGP form a
>> > transport session using IPV4 reachability and then using
>> > address-family
>> > IPV6 .. I am advertising route from R5 to R4 :
>> >
>> >
>> > R4 f/1(VRF) (40.0.0.1)---------------------------- (40.0.0.2) f1/0 R5
>> >
>> > R4 in AS 200
>> > R5 in AS 100
>> >
>> > R4 config
>> > =========
>> >
>> > R4#sh run | sec router bgp
>> > router bgp 200
>> > no synchronization
>> > bgp log-neighbor-changes
>> > no auto-summary
>> > !
>> > address-family ipv4 vrf TEST
>> > no synchronization
>> > exit-address-family
>> > !
>> > address-family ipv6 vrf TEST
>> > no synchronization
>> > neighbor 40.0.0.2 remote-as 100
>> > neighbor 40.0.0.2 activate
>> > exit-address-family
>> >
>> >
>> >
>> > R4#sh run int f1/1
>> > Building configuration...
>> >
>> > Current configuration : 142 bytes
>> > !
>> > interface FastEthernet1/1
>> > vrf forwarding TEST
>> > ip address 40.0.0.1 255.255.255.0
>> > speed auto
>> > duplex auto
>> > ipv6 address 2001:54::4/64
>> > end
>> >
>> >
>> > R5 Config
>> > ==========
>> > R5(config)#do sh run | sec router bgp
>> > router bgp 100
>> > no synchronization
>> > bgp log-neighbor-changes
>> > neighbor 40.0.0.1 remote-as 200
>> > no auto-summary
>> > !
>> > address-family ipv6
>> > no synchronization
>> > network 2001::5/128
>> > neighbor 40.0.0.1 activate
>> > exit-address-family
>> > R5(config)#
>> >
>> >
>> > Following is error message :
>> >
>> > *Jan 18 22:51:34.291: %BGP-3-NOTIFICATION: received from neighbor
>> > 40.0.0.1 active 2/8 (no supported AFI/SAFI) 3 bytes 000101 (timer
>> > expired)
>> >
>> > I feel that i have properly configured the address family to form IPV6
>> > neighbors .
>> > Please let me know where am i missing .
>> >
>> > Thanks
>> > Gaurav Madan
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
Received on Fri Jan 20 2012 - 22:52:32 ART
This archive was generated by hypermail 2.2.0 : Thu Feb 02 2012 - 11:52:51 ART