LAB9: BGP – IPv6
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LAB 9: Diagram
Note: This Lab was developed on Cisco IOS Version15.2(4) M1 ADVENTERPRISEK9-M.
LAB 9: Configure BGP FOR IPv6:
Task 1: Configure IPv6 BGP process for Autonomous
In the configuration mode of router configure IPv6 BGP Process by following command:
R1:
router bgp 65100 ! (Initiate BGP process for AS 65100)
neighbor 22:0:1::2 remote-as 65000 ! (Creates a IPv6 BGP peer group)
neighbor 22:0:1::2 ebgp-multihop 5
neighbor 22:0:1::2 update- loopback 1 ! (To form loop to loop indirect peering
address-family ipv6 ! (Enable address family IPv6)
neighbor 22:0:1::2 activate ! (Enables the exchange of information
neighbor 22:0:1::2 soft-reconfiguration inboundwith IPv6 BGP neighboring router)
exit
R2:
router bgp 65000
neighbor 11:0:1::1 remote-as 65100
neighbor 11:0:1::1 ebgp-multihop 5 ! (IPv6 BGP connections to external
neighbor 11:0:1::1 update-source loopback 1 peers residing on networks that are not
neighbor 33:0:1::3 remote-as 65000 directly connected.)
neighbor 33:0:1::3 update-source loopback 1
address-family ipv6
neighbor 11:0:1::1 activate
neighbor 11:0:1::1 soft-reconfiguration inbound ! (To store fresh incoming updated
neighbor 33:0:1::3 activate from neighbor.)
neighbor 33:0:1::3 soft-reconfiguration inbound
exit
R3:
router bgp 65000
neighbor 44:0:1::4 remote-as 65200
neighbor 44:0:1::4 ebgp-multihop 5
neighbor 44:0:1::4 update-source loopback 1
neighbor 22:0:1::2 remote-as 65000
neighbor 22:0:1::2 update-source loopback 1
address-family ipv6
neighbor 44:0:1::4 activate
neighbor 44:0:1::4 soft-reconfiguration inbound
neighbor 22:0:1::2 activate
neighbor 22:0:1::2 soft-reconfiguration inbound
exit
R4:
router bgp 65200
neighbor 33:0:1::3 remote-as 65000
neighbor 33:0:1::3 ebgp-multihop 5
neighbor 33:0:1::3 update-source loopback 1
address-family ipv6
neighbor 33:0:1::3 activate
neighbor 33:0:1::3 soft-reconfiguration inbound
exit
In the configuration mode of router configure IPv4 OSPF Process by following command:
R1:
ipv6 router ospf 1 ! (Initiate IPv6 OSPF process with process id 1)
interface serial 2/0
ipv6 ospf 1 area 0
interface loopback 1
ipv6 ospf 1 area 0
interface loopback 2
ipv6 ospf 1 area 0
interface loopback 3
ipv6 ospf 1 area 0
exit
R2:
ipv6 router ospf 1
interface serial 2/0
ipv6 ospf 1 area 0
interface ethernet 0/0
ipv6 ospf 1 area 0
interface loopback 1
ipv6 ospf 1 area 0
interface loopback 2
ipv6 ospf 1 area 0
interface loopback 3
ipv6 ospf 1 area 0
exit
R3:
ipv6 router ospf 1
interface serial2/0
ipv6 ospf 1 area 0
interface ethernet 0/0
ipv6 ospf 1 area 0
interface loopback 1
ipv6 ospf 1 area 0
interface loopback 2
ipv6 ospf 1 area 0
interface loopback 3
ipv6 ospf 1 area 0
exit
R4:
ipv6 router ospf 1
interface serial 2/0
ipv6 ospf 1 area 0
interface loopback 1
ipv6 ospf 1 area 0
interface loopback 2
ipv6 ospf 1 area 0
interface loopback 3
ipv6 ospf 1 area 0
exit
Announce the network in BGP Process
R1:
router bgp 65100
address-family ipv6 ! (Enable address family for IPv6 BGP.)
network 11:0:1::0/64 ! (Announce the network in BGP process.)
network 11:0:2::0/64
network 11:0:3::0/64
exit
R2:
router bgp 65000
address-family ipv6
network 22:0:1::0/64
network 22:0:2::0/64
network 22:0:3::0/64
exit
R3:
router bgp 65000
address-family ipv6
network 33:0:1::0/64
network 33:0:2::0/64
network 33:0:3::0/64
exit
R4:
router bgp 65200
address-family ipv6
network 44:0:1::0/64
network 44:0:2::0/64
network 44:0:3::0/64
exit
Task 2: Verification:
Verify IPv6 OSPF routes by following command:
R2#show ipv6 route
! (Shows router’s routing table and IPv6 routes entries.)
IPv6 Routing Table - default - 30 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP
H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea
IS - ISIS summary, D - EIGRP, EX - EIGRP external, NM - NEMO
ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect
O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2, l - LISP
B 11:0:1::/64 [20/0]
via 11:0:1::1
O 11:0:1::1/128 [110/64]
via FE80::A8BB:CCFF:FE00:100, Serial2/0
B 11:0:2::/64 [20/0]
via 11:0:1::1
O 11:0:2::1/128 [110/64]
via FE80::A8BB:CCFF:FE00:100, Serial2/0
B 11:0:3::/64 [20/0]
via 11:0:1::1
O 11:0:3::1/128 [110/64]
via FE80::A8BB:CCFF:FE00:100, Serial2/0
C 12::/64 [0/0]
via Serial2/0, directly connected
L 12::A8BB:CCFF:FE00:200/128 [0/0]
via Serial2/0, receive
C 22:0:1::/64 [0/0]
via Loopback1, directly connected
L 22:0:1::2/128 [0/0]
via Loopback1, receive
C 22:0:2::/64 [0/0]
via Loopback2, directly connected
L 22:0:2::2/128 [0/0]
via Loopback2, receive
C 22:0:3::/64 [0/0]
via Loopback3, directly connected
L 22:0:3::2/128 [0/0]
via Loopback3, receive
C 23::/64 [0/0]
via Ethernet0/0, directly connected
L 23::A8BB:CCFF:FE00:200/128 [0/0]
via Ethernet0/0, receive
B 33:0:1::/64 [200/0]
via 33:0:1::3
O 33:0:1::3/128 [110/10]
via FE80::A8BB:CCFF:FE00:300, Ethernet0/0
B 33:0:2::/64 [200/0]
via 33:0:1::3
O 33:0:2::3/128 [110/10]
via FE80::A8BB:CCFF:FE00:300, Ethernet0/0
B 33:0:3::/64 [200/0]
via 33:0:1::3
O 33:0:3::3/128 [110/10]
via FE80::A8BB:CCFF:FE00:300, Ethernet0/0
O 34::/64 [110/74]
via FE80::A8BB:CCFF:FE00:300, Ethernet0/0
B 44:0:1::/64 [200/0]
via 44:0:1::4
O 44:0:1::4/128 [110/74]
via FE80::A8BB:CCFF:FE00:300, Ethernet0/0
B 44:0:2::/64 [200/0]
via 44:0:1::4
O 44:0:2::4/128 [110/74]
via FE80::A8BB:CCFF:FE00:300, Ethernet0/0
B 44:0:3::/64 [200/0]
via 44:0:1::4
O 44:0:3::4/128 [110/74]
via FE80::A8BB:CCFF:FE00:300, Ethernet0/0
L FF00::/8 [0/0]
via Null0, receive
Verify IPv6 BGP neighborship and its details by following command:
BGP neighbor states:
Idle – TCP connectivity issue
Active – Command configuration issue
Established – TCP connectivity established
R2#show bgp ipv6 unicast neighbor
! (show details of IPv6bgp neighbor)
BGP neighbor is 11:0:1::1, remote AS 65100, external link
BGP version 4, remote router ID 11.0.3.1
BGP state = Established, up for 00:00:54
Last read 00:00:02, last write 00:00:02, hold time is 180, keepalive interval is 60 seconds
Neighbor sessions:
1 active, is not multisession capable (disabled)
Neighbor capabilities:
Route refresh: advertised and received(new)
Four-octets ASN Capability: advertised and received
Address family IPv6 Unicast: advertised and received
Enhanced Refresh Capability: advertised and received
Multisession Capability:
Stateful switchover support enabled: NO for session 1
Message statistics:
InQ depth is 0
OutQ depth is 0
Sent Rcvd
Opens: 1 1
Notifications: 0 0
Updates: 0 2
Keepalives: 2 2
Route Refresh: 0 0
Total: 3 5
Default minimum time between advertisement runs is 30 seconds
For address family: IPv6 Unicast
Session: 11:0:1::1
BGP table version 1, neighbor version 1/0
Output queue size : 0
Index 1, Advertise bit 0
1 update-group member
Slow-peer detection is disabled
Slow-peer split-update-group dynamic is disabled
Sent Rcvd
Prefix activity: ---- ----
Prefixes Current: 0 3 (Consumes 264 bytes)
Prefixes Total: 0 3
Implicit Withdraw: 0 0
Explicit Withdraw: 0 0
Used as bestpath: n/a 0
Used as multipath: n/a 0
Outbound Inbound
Local Policy Denied Prefixes: -------- -------
Total: 0 0
Number of NLRIs in the update sent: max 0, min 0
Last detected as dynamic slow peer: never
Dynamic slow peer recovered: never
Refresh Epoch: 1
Last Sent Refresh Start-of-rib: never
Last Sent Refresh End-of-rib: never
Last Received Refresh Start-of-rib: never
Last Received Refresh End-of-rib: never
Sent Rcvd
Refresh activity: ---- ----
Refresh Start-of-RIB 0 0
Refresh End-of-RIB 0 0
Address tracking is enabled, the RIB does have a route to 11:0:1::1
Connections established 1; dropped 0
Last reset never
External BGP neighbor may be up to 5 hops away.
Transport(tcp) path-mtu-discovery is enabled
Graceful-Restart is disabled
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 5
Local host: 22:0:1::2, Local port: 38536
Foreign host: 11:0:1::1, Foreign port: 179
Connection tableid (VRF): 0
Maximum output segment queue size: 50
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)
Event Timers (current time is 0x138C7):
Timer Starts Wakeups Next
Retrans 4 0 0x0
TimeWait 0 0 0x0
AckHold 3 0 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 1 0 0x98CA5
DeadWait 0 0 0x0
Linger 0 0 0x0
ProcessQ 0 0 0x0
iss: 535224739 snduna: 535224835 sndnxt: 535224835
irs: 2503198340 rcvnxt: 2503198559
sndwnd: 16289 scale: 0 maxrcvwnd: 16384
rcvwnd: 16166 scale: 0 delrcvwnd: 218
SRTT: 413 ms, RTTO: 3205 ms, RTV: 2792 ms, KRTT: 0 ms
minRTT: 9 ms, maxRTT: 1000 ms, ACK hold: 200 ms
Status Flags: active open
Option Flags: nagle, path mtu capable
IP Precedence value : 6
Datagrams (max data segment is 1440 bytes):
Rcvd: 8 (out of order: 0), with data: 4, total data bytes: 218
Sent: 7 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 7, total data bytes: 383
Packets received in fast path: 0, fast processed: 0, slow path: 0
fast lock acquisition failures: 0, slow path: 0
TCP Semaphore 0xB2CF0E64 FREE
BGP neighbor is 33:0:1::3, remote AS 65000, internal link
BGP version 4, remote router ID 33.0.3.3
BGP state = Established, up for 00:00:16
Last read 00:00:16, last write 00:00:16, hold time is 180, keepalive interval is 60 seconds
Neighbor sessions:
1 active, is not multisession capable (disabled)
Neighbor capabilities:
Route refresh: advertised and received(new)
Four-octets ASN Capability: advertised and received
Address family IPv6 Unicast: advertised and received
Enhanced Refresh Capability: advertised and received
Multisession Capability:
Stateful switchover support enabled: NO for session 1
Message statistics:
InQ depth is 0
OutQ depth is 0
Sent Rcvd
Opens: 1 1
Notifications: 0 0
Updates: 0 0
Keepalives: 1 1
Route Refresh: 0 0
Total: 2 2
Default minimum time between advertisement runs is 0 seconds
For address family: IPv6 Unicast
Session: 33:0:1::3
BGP table version 1, neighbor version 1/0
Output queue size : 0
Index 2, Advertise bit 1
2 update-group member
Slow-peer detection is disabled
Slow-peer split-update-group dynamic is disabled
Sent Rcvd
Prefix activity: ---- ----
Prefixes Current: 0 0
Prefixes Total: 0 0
Implicit Withdraw: 0 0
Explicit Withdraw: 0 0
Used as bestpath: n/a 0
Used as multipath: n/a 0
Outbound Inbound
Local Policy Denied Prefixes: -------- -------
Total: 0 0
Number of NLRIs in the update sent: max 0, min 0
Last detected as dynamic slow peer: never
Dynamic slow peer recovered: never
Refresh Epoch: 1
Last Sent Refresh Start-of-rib: never
Last Sent Refresh End-of-rib: never
Last Received Refresh Start-of-rib: never
Last Received Refresh End-of-rib: never
Sent Rcvd
Refresh activity: ---- ----
Refresh Start-of-RIB 0 0
Refresh End-of-RIB 0 0
Address tracking is enabled, the RIB does have a route to 33:0:1::3
Connections established 1; dropped 0
Last reset never
Transport(tcp) path-mtu-discovery is enabled
Graceful-Restart is disabled
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 255
Local host: 22:0:1::2, Local port: 54981
Foreign host: 33:0:1::3, Foreign port: 179
Connection tableid (VRF): 0
Maximum output segment queue size: 50
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)
Event Timers (current time is 0x138C8):
Timer Starts Wakeups Next
Retrans 3 0 0x0
TimeWait 0 0 0x0
AckHold 2 0 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 1 0 0xA2119
DeadWait 0 0 0x0
Linger 0 0 0x0
ProcessQ 0 0 0x0
iss: 3435553471 snduna: 3435553548 sndnxt: 3435553548
irs: 180299801 rcvnxt: 180299878
sndwnd: 16308 scale: 0 maxrcvwnd: 16384
rcvwnd: 16308 scale: 0 delrcvwnd: 76
SRTT: 330 ms, RTTO: 3159 ms, RTV: 2829 ms, KRTT: 0 ms
minRTT: 0 ms, maxRTT: 1000 ms, ACK hold: 200 ms
Status Flags: active open
Option Flags: nagle, path mtu capable
IP Precedence value : 6
Datagrams (max data segment is 1440 bytes):
Rcvd: 5 (out of order: 0), with data: 2, total data bytes: 76
Sent: 5 (retransmit: 0, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 5, total data bytes: 284
Packets received in fast path: 0, fast processed: 0, slow path: 0
fast lock acquisition failures: 0, slow path: 0
TCP Semaphore 0xB3C42AC4 FREE
Verify IPv6 BGP routes and its details by following command:
R2#show bgp ipv6 unicast
! (Shows IPv6 BGP table where “>” shows best path.)
BGP table version is 13, local router ID is 22.0.3.2
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
*> 11:0:1::/64 11:0:1::1 0 0 65100 i
*> 11:0:2::/64 11:0:1::1 0 0 65100 i
*> 11:0:3::/64 11:0:1::1 0 0 65100 i
*> 22:0:1::/64 :: 0 32768 i
*> 22:0:2::/64 :: 0 32768 i
*> 22:0:3::/64 :: 0 32768 i
*>i 33:0:1::/64 33:0:1::3 0 100 0 i
*>i 33:0:2::/64 33:0:1::3 0 100 0 i
*>i 33:0:3::/64 33:0:1::3 0 100 0 i
*>i 44:0:1::/64 44:0:1::4 0 100 0 65200 i
*>i 44:0:2::/64 44:0:1::4 0 100 0 65200 i
*>i 44:0:3::/64 44:0:1::4 0 100 0 65200 i
