OSPF, BGP and BFD Session Establishments via Cross-connect
The following configuration example will illustrate OSPF, BFD and BGP session establishments via Cross-connect.
Topology
Figure 1-1: Session establishments via Cross-connect
R1
#configure terminal | Enter configure mode |
(config)#hostname R1 | Configure the host name |
(config)#interface xe1/1 | Enter into interface level |
(config-if)#ip address 10.10.10.1/24 | Configure IP address to the interface |
(config-if)#exit | Exiting from interface level |
(config)#interface xe32/1 | Enter into interface mode |
(config-if)#ip address 20.20.20.1/24 | Configure ip address to the interface |
(config-if)#exit | Exiting from interface level |
(config)#interface lo | Enter into loop-back interface |
(config-if)#ip address 1.1.1.1/24 secondary | Configuring secondary IP address |
(config-if)#exit | Exiting the loop-back interface level |
(config)#bfd interval 3 minrx 3 multiplier 3 | Configuring BFD options |
(config)#router ospf 10 | Configuring OSPF process |
(config-router)#router-id 1.1.1.1 | Configuring router-id |
(config-router)#network 10.10.10.0 0.0.0.255 area 0 | Configuring Network id and Area ID |
(config-router)#redistribute connected | Configuring redistribute connected |
(config-router)#bfd all-interfaces | Configuring bfd on all-interfaces |
(config-router)#exit | Exiting the OSPF process |
(config)#router bgp 100 | Configuring BGP process |
(config-router)#neighbor 10.10.10.2 remote-as 200 | Configuring neighbor details |
(config-router)#commit | Commit the configuration |
XC_node1
#configure terminal | Enter configure mode |
(config)#hostname Xc Node-1 | Configuring the hostname |
(config)#coherent-module 7 | Entering into coherent-module |
(config-module)#enable | Enabling the coherent module |
(config-module)#exit | Exiting the coherent module |
(config)#interface ce29 | Entering into interface level |
(config-if)#switchport | Configuring switchport |
(config-if)#exit | Exiting the interface level |
(config)#interface ce11/1 | Entering the interface level |
(config-if)#switchport | Configuring the switchport |
(config-if)#exit | Exiting the interface level |
(config)#cross-connect OSPF_BFD_BGP | Configuring the Cross-connect |
(config-XC)#ep1 ce11/1 ep2 ce29 | Creating endpoints |
(config-XC)#commit | Commit the configuration |
XC_node2
#configure terminal | Enter configure mode |
(config)#hostname Xc Node-2 | Configuring the hostname |
(config)#coherent-module 1 | Entering into coherent-module |
(config-module)#enable | Enabling the coherent module |
(config-module)#exit | Exiting the coherent module |
(config)#interface ce17 | Entering into interface level |
(config-if)#switchport | Configuring switchport |
(config-if)#exit | Exiting the interface level |
(config)#interface ce11/1 | Entering the interface level |
(config-if)#switchport | Configuring the switchport |
(config-if)#exit | Exiting the interface level |
(config)#cross-connect OSPF_BFD_BGP-1 | Configuring the Cross-connect |
(config-XC)#ep1 ce17 ep2 ce11/1 | Creating endpoints |
(config-XC)#commit | Commit the configuration |
R2
#configure terminal | Enter configure mode |
(config)#hostname R2 | Configure the host name |
(config)#interface xe49/1 | Enter into interface level |
(config-if)#ip address 10.10.10.2/24 | Configure IP address to the interface |
(config-if)#exit | Exiting from interface level |
(config)#interface xe45 | Enter into interface mode |
(config-if)#ip address 30.30.30.1/24 | Configure ip address to the interface |
(config-if)#exit | Exiting from interface level |
(config)#interface lo | Enter into loop-back interface |
(config-if)#ip address 2.2.2.2/24 secondary | Configuring secondary IP address |
(config-if)#exit | Exiting the loop-back interface level |
(config)#bfd interval 3 minrx 3 multiplier 3 | Configuring BFD options |
(config)#router ospf 10 | Configuring OSPF process |
(config-router)#router-id 2.2.2.2 | Configuring router-id |
(config-router)#network 10.10.10.0 0.0.0.255 area 0 | Configuring Network id and Area ID |
(config-router)#redistribute connected | Configuring redistribute connected |
(config-router)#bfd all-interfaces | Configuring bfd on all-interfaces |
(config-router)#exit | Exiting the OSPF process |
(config)#router bgp 200 | Configuring BGP process |
(config-router)#neighbor 10.10.10.1 remote-as 100 | Configuring neighbor details |
(config-router)#commit | Commit the configuration |
Validation
Coherent-module Summary Validation
XC_node1#show coherent-module 7
---------------------------------------------------------------
SLOT-ID : 7
---------------------------------------------------------------
Module Type : DCO
Admin-Status : UP
Oper-Status : Ready
Vendor-name : Acacia Comm Inc.
Vendor-SN : 203066225
Vendor-FW-Version : 38.5
Network-Interfaces : 1
Host-Interfaces : 2
CFP2 Vendor-name : Acacia Comm Inc.
CFP2 Vendor-OUI : 0x0
CFP2 Vendor-Part : AC200-D23-005
CFP2 Vendor-SN : 203066225
CFP2 Vendor-FW-Version : 38.5
CFP2 Temperature : 48.60 °C
CFP2 Power Supply : 3.322 V
---------------------------------------------------------------
SLOT-ID : 7 NETIF : 0
---------------------------------------------------------------
OperStatus : ready
DSP-OperStatus : ready
Modulation-format : dp-16-qam
FEC Mode : 15per-denali
Differential Encoding : FALSE
Pulseshaping-Rx :
Pulseshaping-Tx : TRUE
Loopback-type : none
PRBS-type : none
Losi-Enabled :
PRBS-IN-SYNC : FALSE
Current PRBS BER : nan
Current BER Period : 1000 ms
Current PRE FEC BER : 1.115706e-03
Current POST FEC BER :
Current Chromatic Dispersion : -1 ps/nm
Current Differential Group Delay : 3 ps
Tx-Disable : FALSE
TX-Output-Power : 0.00 dBm
TX-Laser-freq : 193500000.000000 MHz
Min-LaserFreq : 191250000.000000 MHz
Max-LaserFreq : 196100000.000000 MHz
Current TX Laser Freq : 193500000.000000 MHz
Grid-Spacing : 6.25-ghz
Laser-Grid : 50-ghz 12.5-ghz 6.25-ghz
Current Output Power : 0.04 dBm
Current Input Power : -4.36 dBm
Current Post VOA Power :
Current Prov~ Chnl Power : -3.78 dBm
Current Post VOA Prov~ Chnl Power : -3.78 dBm
Current OSNR Estimate : 34.30 dB
Current Q-Margin : 2.80 dB
Current Uncorrected Block-count : 0
Laser Age : 0 %
---------------------------------------------------------------
SLOT-ID : 7 HOSTIF : 0
---------------------------------------------------------------
Fec-type : none
Loopback-type : none
Current PRE FEC BER : nan
---------------------------------------------------------------
SLOT-ID : 7 HOSTIF : 1
---------------------------------------------------------------
Fec-type : none
Loopback-type : none
Current PRE FEC BER : nan
XC_node2#sh coherent-module 1
---------------------------------------------------------------
SLOT-ID : 1
---------------------------------------------------------------
Module Type : DCO
Admin-Status : UP
Oper-Status : Ready
Vendor-name : LUMENTUM
Vendor-SN : VCD19310002
Vendor-FW-Version : 0.52
Network-Interfaces : 1
Host-Interfaces : 2
CFP2 Vendor-name : LUMENTUM
CFP2 Vendor-OUI : 0xF00200
CFP2 Vendor-Part : TRB200DAA-01
CFP2 Vendor-SN : VCD19310002
CFP2 Vendor-FW-Version : 0.52
CFP2 Temperature : 69.02 °C
CFP2 Power Supply : 3.340 V
---------------------------------------------------------------
SLOT-ID : 1 NETIF : 0
---------------------------------------------------------------
OperStatus : ready
DSP-OperStatus : ready
Modulation-format : dp-16-qam
FEC Mode : 15per-denali
Differential Encoding : FALSE
Pulseshaping-Rx :
Pulseshaping-Tx : TRUE
Loopback-type : none
PRBS-type : none
Losi-Enabled :
PRBS-IN-SYNC : FALSE
Current PRBS BER : nan
Current BER Period : 1000 ms
Current PRE FEC BER : 4.560457e-04
Current POST FEC BER :
Current Chromatic Dispersion : 5 ps/nm
Current Differential Group Delay : 6 ps
Tx-Disable : FALSE
TX-Output-Power : 0.00 dBm
TX-Laser-freq : 193500000.000000 MHz
Min-LaserFreq : 191150000.000000 MHz
Max-LaserFreq : 196100000.000000 MHz
Current TX Laser Freq : 193500000.000000 MHz
Grid-Spacing : 6.25-ghz
Laser-Grid : 100-ghz 50-ghz 25-ghz 12.5-ghz 6.25-ghz
Current Output Power : -0.18 dBm
Current Input Power : -1.79 dBm
Current Post VOA Power :
Current Prov~ Chnl Power : -2.44 dBm
Current Post VOA Prov~ Chnl Power : -2.44 dBm
Current OSNR Estimate : 25.00 dB
Current Q-Margin : 3.50 dB
Current Uncorrected Block-count : 0
Laser Age : 0 %
---------------------------------------------------------------
SLOT-ID : 1 HOSTIF : 0
---------------------------------------------------------------
Fec-type : none
Loopback-type : none
Current PRE FEC BER : nan
---------------------------------------------------------------
SLOT-ID : 1 HOSTIF : 1
---------------------------------------------------------------
Fec-type : none
Loopback-type : none
Current PRE FEC BER : nan
XC_node2#sh run interface ce17
!
interface ce17
!
Cross-Connect Validation
XC_node1# sh cross-connect
Codes: EP - Endpoint, Bkp_EP - Backup endpoint
* - Active Endpoint, none - not configured Cross-connect name : OSPF_BFD_BGP
EP1:ce11/1 EP2:ce29 Revertive:No Bkp_EP1:None Bkp_EP2:None Admin Status:UP Oper Status:UP
+======================================================================================
============================+
| EP | OVID | IVID | Rx packets | Rx bytes | Tx packets |Tx bytes
|Interface Status|
+======================================================================================
============================+
| EP1*
|UP | -
| | - |0 |0 |0 |0
| EP2*
|UP | -
| | - |0 |0 |0 |0
+======================================================================================
============================+
cross-connect summary Total XC : 1
Admin Up : 1
Admin Down : 0
Total Rules : 1
XC_node1#show running-config cross-connect
cross-connect OSPF_BFD_BGP
ep1 ce11/1 ep2 ce29
XC_node2# sh cross-connect
Codes: EP - Endpoint, Bkp_EP - Backup endpoint
* - Active Endpoint, none - not configured Cross-connect name : OSPF_BFD_BGP-1
EP1:ce17 EP2:ce11/1 Revertive:No Bkp_EP1:None Bkp_EP2:None Admin Status:UP Oper Status:UP
+======================================================================================
============================+
| EP | OVID | IVID | Rx packets | Rx bytes | Tx packets |Tx bytes
|Interface Status|
+======================================================================================
============================+
| EP1*
|UP | -
| | - |0 |0 |0 |0
| EP2*
|UP | -
| | - |0 |0 |0 |0
+======================================================================================
============================+
cross-connect summary Total XC : 1
Admin Up : 1
Admin Down : 0
Total Rules : 1
XC_node2#show running-config cross-connect
cross-connect OSPF_BFD_BGP-1
ep1 ce17 ep2 ce11/1
OSPF Validation
R1#show ip ospf neighbor
Total number of full neighbors: 1
OSPF process 10 VRF(default):
Neighbor ID Pri State Dead Time Address Interface
Instance ID
2.2.2.2 1 Full/Backup 00:00:37 10.10.10.2 xe1/1
0
R2#show ip ospf neighbor
Total number of full neighbors: 1
OSPF process 10 VRF(default):
Neighbor ID Pri State Dead Time Address Interface
Instance ID
1.1.1.1 1 Full/Backup 00:00:38 10.10.10.1 xe49/1
0
BFD Validation
R1#show bfd interface xe1/1
Interface: xe1/1 ifindex: 10001 state: UP
Interface level configuration: NO ECHO, NO SLOW TMR
Min Tx: 3 Min Rx: 3 Multiplier: 3
R1#show bfd session
BFD process for VRF: (DEFAULT VRF)
================================================================================
=====
Sess-Idx Remote-Disc Lower-Layer Sess-Type Sess-State UP-Time Interface
Down-Reason Remote-Addr
1 1 IPv4 Single-Hop Up 00:02:54 xe1/1
NA 10.10.10.2/32
Number of Sessions: 1
R1#show bfd session
BFD process for VRF: (DEFAULT VRF)
================================================================================
=====
Sess-Idx Remote-Disc Lower-Layer Sess-Type Sess-State UP-Time Interface
Down-Reason Remote-Addr
1 1 IPv4 Single-Hop Up 00:02:54 xe1/1
NA 10.10.10.2/32
Number of Sessions: 1
R1#show bfd session detail
BFD process for VRF: (DEFAULT VRF)
================================================================================
====
Session Interface Index : 10001 Interface name :xe1/1
Session Index : 1
Lower Layer : IPv4 Version : 1
Session Type : Single Hop Session State : Up
Local Discriminator : 1 Local Address : 10.10.10.1/32
Remote Discriminator : 1 Remote Address : 10.10.10.2/32
Local Port : 49152 Remote Port : 3784
Options :
Diagnostics : None
Timers in Milliseconds :
Min Tx: 3 Min Rx: 3 Multiplier: 3
Neg Tx: 3 Neg Rx: 3 Neg detect mult: 3
Min echo Tx: 1000 Min echo Rx: 1000 Neg echo intrvl: 0
Storage type : 2
Sess down time : 00:00:00
Sess Down Reason : NA
Bfd GTSM Disabled
Bfd Authentication Disabled
Counters values:
Pkt In : 00000000000000117138 Pkt Out : 00000000000000117172
Pkts Drop : 00000000000000000000 Auth Pkts Drop : 00000000000000000000
Echo Out : 00000000000000000000 IPv6 Echo Out : 00000000000000000000
IPv6 Pkt In : 00000000000000000000 IPv6 Pkt Out : 00000000000000000000
UP Count : 1 UPTIME : 00:05:42
Protocol Client Info:
OSPF-> Client ID: 4 Flags: 4
----------------------------------------------------------
Number of Sessions: 1
R2#show bfd interface xe49/1
Interface: xe49/1 ifindex: 10049 state: UP
Interface level configuration: NO ECHO, NO SLOW TMR
Min Tx: 3 Min Rx: 3 Multiplier: 3
R2#show bfd session
BFD process for VRF: (DEFAULT VRF)
================================================================================
=====
Sess-Idx Remote-Disc Lower-Layer Sess-Type Sess-State UP-Time Interface
Down-Reason Remote-Addr
1 1 IPv4 Single-Hop Up 00:04:12 xe49/1
NA 10.10.10.1/32
Number of Sessions: 1
R2#sh bfd session detail
BFD process for VRF: (DEFAULT VRF)
================================================================================
====
Session Interface Index : 10049 Interface name :xe49/1
Session Index : 1
Lower Layer : IPv4 Version : 1
Session Type : Single Hop Session State : Up
Local Discriminator : 1 Local Address : 10.10.10.2/32
Remote Discriminator : 1 Remote Address : 10.10.10.1/32
Local Port : 49152 Remote Port : 3784
Options :
Diagnostics : None
Timers in Milliseconds :
Min Tx: 3 Min Rx: 3 Multiplier: 3
Neg Tx: 3 Neg Rx: 3 Neg detect mult: 3
Min echo Tx: 1000 Min echo Rx: 1000 Neg echo intrvl: 0
Storage type : 2
Sess down time : 00:00:00
Sess Down Reason : NA
Bfd GTSM Disabled
Bfd Authentication Disabled
Counters values:
Pkt In : 00000000000000044905 Pkt Out : 00000000000000044905
Pkts Drop : 00000000000000000000 Auth Pkts Drop : 00000000000000000000
Echo Out : 00000000000000000000 IPv6 Echo Out : 00000000000000000000
IPv6 Pkt In : 00000000000000000000 IPv6 Pkt Out : 00000000000000000000
UP Count : 1 UPTIME : 00:02:11
Protocol Client Info:
OSPF-> Client ID: 4 Flags: 4
----------------------------------------------------------
Number of Sessions: 1
BGP Vaildation
R1#sh bgp neighbors
BGP neighbor is 10.10.10.2, remote AS 200, local AS 100, external link
BGP version 4, local router ID 10.10.10.1, remote router ID 2.2.2.2
BGP state = Established, up for 00:04:00
Last read 00:00:08, hold time is 90, keepalive interval is 30 seconds
Neighbor capabilities:
Route refresh: advertised and received (old and new)
Address family IPv4 Unicast: advertised and received
Received 11 messages, 0 notifications, 0 in queue
Sent 12 messages, 0 notifications, 0 in queue
Route refresh request: received 0, sent 0
Minimum time between advertisement runs is 30 seconds
For address family: IPv4 Unicast
BGP table version 1, neighbor version 1
Index 1, Offset 0, Mask 0x2
Community attribute sent to this neighbor (both)
0 accepted prefixes
0 announced prefixes
Connections established 1; dropped 0
Local host: 10.10.10.1, Local port: 179
Foreign host: 10.10.10.2, Foreign port: 58033
Nexthop: 10.10.10.1
Nexthop global: ::
Nexthop local: ::
BGP connection: non shared network
R2#sh ip bgp neighbors
BGP neighbor is 10.10.10.1, remote AS 100, local AS 200, external link
BGP version 4, local router ID 2.2.2.2, remote router ID 10.10.10.1
BGP state = Established, up for 00:00:03
Last read 00:00:03, hold time is 90, keepalive interval is 30 seconds
Neighbor capabilities:
Route refresh: advertised and received (old and new)
Address family IPv4 Unicast: advertised and received
Received 2 messages, 0 notifications, 0 in queue
Sent 2 messages, 0 notifications, 0 in queue
Route refresh request: received 0, sent 0
Minimum time between advertisement runs is 30 seconds
For address family: IPv4 Unicast
BGP table version 1, neighbor version 1
Index 1, Offset 0, Mask 0x2
Community attribute sent to this neighbor (both)
0 accepted prefixes
0 announced prefixes
Connections established 1; dropped 0
Local host: 10.10.10.2, Local port: 58033
Foreign host: 10.10.10.1, Foreign port: 179
Nexthop: 10.10.10.2
Nexthop global: ::
Nexthop local: ::
BGP connection: non shared network
Show interface counters
R1#sh interface counters rate gbps
+-------------------+--------------+-------------+--------------+-------------+
| Interface | Rx gbps | Rx pps | Tx gbps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
xe1/1 6.91 13082945 6.91 13082949
xe32/1 6.91 13082325 6.91 13082325
XC_node1#sh interface counters rate gbps
+-------------------+--------------+-------------+--------------+-------------+
| Interface | Rx gbps | Rx pps | Tx gbps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
ce11/1 6.91 13082437 6.91 13082437
ce29 6.91 13082457 6.91 13082458
XC_node1# sh cross-connect
Codes: EP - Endpoint, Bkp_EP - Backup endpoint
* - Active Endpoint, none - not configured Cross-connect name : OSPF_BFD_BGP
EP1:ce11/1 EP2:ce29 Revertive:No Bkp_EP1:None Bkp_EP2:None Admin Status:UP Oper Status:UP
+======================================================================================
============================+
| EP | OVID | IVID | Rx packets | Rx bytes | Tx packets |Tx bytes
|Interface Status|
+======================================================================================
============================+
| EP1*
|UP | -
| | - |13082437 |1674551936 |13082437 |1674551936
| EP2*
|UP | -
| | - |13082457 |1674554496 |13082457 |1674554496
+======================================================================================
============================+
cross-connect summary Total XC : 1
Admin Up : 1
Admin Down : 0
Total Rules : 1
XC_node2#sh interface counters rate gbps
+-------------------+--------------+-------------+--------------+-------------+
| Interface | Rx gbps | Rx pps | Tx gbps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
ce11/1 6.91 13082428 6.91 13082429
ce17 6.91 13082381 6.91 13082378
XC_node2# sh cross-connect
Codes: EP - Endpoint, Bkp_EP - Backup endpoint
* - Active Endpoint, none - not configured Cross-connect name : OSPF_BFD_BGP-1
EP1:ce17 EP2:ce11/1 Revertive:No Bkp_EP1:None Bkp_EP2:None Admin Status:UP Oper Status:UP
+======================================================================================
============================+
| EP | OVID | IVID | Rx packets | Rx bytes | Tx packets |Tx bytes
|Interface Status|
+======================================================================================
============================+
| EP1*
|UP | -
| | - |13082428 |1674550784 |13082429 |1674550784
| EP2*
|UP | -
| | - |13082381 |1674544768 |13082381 |1674544768
+======================================================================================
============================+
cross-connect summary Total XC : 1
Admin Up : 1
Admin Down : 0
Total Rules : 1
R2#sh interface counters rate gbps
+-------------------+--------------+-------------+--------------+-------------+
| Interface | Rx gbps | Rx pps | Tx gbps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
xe45 6.91 13081988 6.91 13081988
xe49/1 6.91 13082339 6.91 13082339
Last modified date: 06-28-2023