Configuring OSPF ensures that user-end provider edges (UPEs) and superstratum provider edges (SPEs) can be reached through public network routes.
The following uses the configuration of Core_SPE1 on the core ring as an example. The configurations of Core_SPE2 and Core_SPE3 are similar to the configuration of Core_SPE1, and are not mentioned here.
router id 172.16.0.5 //Configure a router ID. # interface Eth-Trunk4 ospf network-type p2p //Set the OSPF network type to P2P on the interfaces using IP addresses with 31-bit subnet masks. # interface Eth-Trunk5 ospf network-type p2p # interface Eth-Trunk17 ospf network-type p2p # interface XGigabitEthernet6/0/4 ospf network-type p2p # ospf 1 silent-interface all //Prohibit all interfaces from receiving and sending OSPF packets. undo silent-interface Eth-Trunk4 //Allow interfaces to receive and send OSPF packets. undo silent-interface Eth-Trunk5 undo silent-interface Eth-Trunk17 undo silent-interface XGigabitEthernet6/0/4 spf-schedule-interval millisecond 10 //Set the route calculation interval to 10 ms to speed up route convergence. lsa-originate-interval 0 //Set the LSA update interval to 0. lsa-arrival-interval 0 //Set the interval for receiving LSAs to 0 so that topology or route changes can be immediately detected to speed up route convergence. graceful-restart period 600 //Enable OSPF GR. flooding-control //Enable flooding-control to stabilize neighbor relationships. area 0.0.0.0 authentication-mode md5 1 cipher %^%#NInJJ<oF9VXb:BS~~9+JT'suROXkVHNG@8+*3FyB%^%# //Set the authentication mode and password for the OSPF area. network 172.16.0.5 0.0.0.0 network 172.17.4.2 0.0.0.0 network 172.17.4.8 0.0.0.0 network 172.17.4.10 0.0.0.0 network 172.17.10.2 0.0.0.0 #
The following uses the configuration of Site1_UPE1 as an example. The configurations of Site1_UPE2, Site2_UPE3, Site2_UPE4, Site3_UPE5, and Site3_UPE6 are similar to the configuration of Site1_UPE1, and are not mentioned here.
router id 172.16.2.51
#
interface Eth-Trunk7
ospf network-type p2p
#
interface Eth-Trunk17
ospf network-type p2p
#
ospf 1
silent-interface all
undo silent-interface Eth-Trunk7
undo silent-interface Eth-Trunk17
graceful-restart period 600
bandwidth-reference 100000 //Set the bandwidth reference value used by the system to calculate the interface cost based on a formula.
flooding-control
area 0.0.0.0
authentication-mode md5 1 cipher %^%#nU!dUe#c'J!;/%*WtZxQ<gP:'zx_E2OQnML]q;s#%^%#
network 172.16.2.51 0.0.0.0
network 172.17.4.11 0.0.0.0
network 172.17.4.14 0.0.0.0
#
Run the display ospf peer command to check OSPF neighbor information. Using Core_SPE1 as an example, if the value of State is Full, OSPF neighbor relationships have set up successfully.
[Core_SPE1]display ospf peer
OSPF Process 1 with Router ID 172.16.0.5
Neighbors
Area 0.0.0.0 interface 172.17.4.8(Eth-Trunk4)'s neighbors
Router ID: 172.16.0.3 Address: 172.17.4.9 GR State: Normal
State: Full Mode:Nbr is Slave Priority: 1
DR: None BDR: None MTU: 0
Dead timer due in 40 sec
Retrans timer interval: 4
Neighbor is up for 00:53:42
Authentication Sequence: [ 0 ]
Neighbors
Area 0.0.0.0 interface 172.17.4.2(Eth-Trunk5)'s neighbors
Router ID: 172.16.0.4 Address: 172.17.4.3 GR State: Normal
State: Full Mode:Nbr is Master Priority: 1
DR: None BDR: None MTU: 0
Dead timer due in 37 sec
Retrans timer interval: 4
Neighbor is up for 00:53:22
Authentication Sequence: [ 0 ]
Neighbors
Area 0.0.0.0 interface 172.17.4.10(Eth-Trunk17)'s neighbors
Router ID: 172.16.2.51 Address: 172.17.4.11 GR State: Normal
State: Full Mode:Nbr is Slave Priority: 1
DR: None BDR: None MTU: 0
Dead timer due in 31 sec
Retrans timer interval: 4
Neighbor is up for 00:53:34
Authentication Sequence: [ 0 ]
Neighbors
Area 0.0.0.0 interface 172.17.10.2(XGigabitEthernet6/0/4)'s neighbors
Router ID: 172.16.2.86 Address: 172.17.10.3 GR State: Normal
State: Full Mode:Nbr is Master Priority: 1
DR: None BDR: None MTU: 0
Dead timer due in 32 sec
Retrans timer interval: 5
Neighbor is up for 00:53:42
Authentication Sequence: [ 0 ]