การคอนฟิก BGP Option C ด้วย BGP-LU, ISIS-SR, OSPF-SR บนอุปกรณ์ ZTE
Concept
PE1 กับ PE2 จะรัน ISIS-SR โดยคอนฟิก iBGP peer หากันโดยใช้ Loopback. อาศัย BGP-LU ในการประกาศ loopback + label
PE2 กับ PE3 จะมีไม่รัน IGP และไม่ได้ enable LDP, RSVP . MPLS จะมีแค่ BGP-LU. จะมีการทำ route-map เพื่อ set label. คอนฟิก eBGP peer หากันโดยใช้ IP WAN
PE3 กับ PE4 จะเหมือนกันกับ PE1,PE2 ต่างกันแค่เปลี่ยน IGP เป็น OSPF-SR
PE3 กับ PE4 จะเหมือนกันกับ PE1,PE2 ต่างกันแค่เปลี่ยน IGP เป็น OSPF-SR
PE1 กับ PE4 จะคอนฟิก MP-EBGP peer หากัน enable address family vpn4. ไม่ต้อง enable label unicast
PE1 กับ CE1 ที่ PE1 config vrf ใส่ ip ตามปกติ. CE1 ก็คอนฟิกใส่ IP ไม่จำเป็นต้องมี vrf. และคอนฟิก static route เพื่อให้รู้จักวงที่ฝั่ง CE2
PE4 กับ CE2 เหมือนกันกับฝั่ง PE1 กับ CE1
PE4 กับ CE2 เหมือนกันกับฝั่ง PE1 กับ CE1
อ้างอิง ตัวอย่างจาก Huawei
log file config, show status ต่างๆ และผล capture traffic เอาไว้ดู label stack
ตัวอย่าง show status ที่อยู่ใน log file
##------ PE1 verify command ---------------- terminal length 0 show running-config show interface description show ip interface brief show isis adjacency show ip forwarding route show mpls forwarding-table show mpls label manage ping mpls ipv4 10.10.10.2 32 source 10.10.10.1 ping mpls ipv4 10.10.10.3 32 source 10.10.10.1 ping mpls ipv4 10.10.10.4 32 source 10.10.10.1 show segment-routing ipv4-mpls prefix-sid local show segment-routing ipv4-mpls prefix-sid remote show segment-routing ipv4-mpls adjacency-sid remote show segment-routing ipv4-mpls adjacency-sid local show ip bgp labels show bgp all summary show bgp ipv4 unicast summary show bgp vpnv4 unicast summary show bgp ipv4 unicast neighbor 10.10.10.2 show bgp ipv4 unicast neighbor in 10.10.10.2 show bgp ipv4 unicast neighbor out 10.10.10.2 show bgp vpnv4 unicast neighbor 10.10.10.4 show bgp vpnv4 unicast neighbor in 10.10.10.4 show bgp vpnv4 unicast neighbor out 10.10.10.4 show ip bgp route detail 10.10.10.2 32 show ip bgp route detail 10.10.10.3 32 show ip bgp route detail 10.10.10.4 32 show ip forwarding route vrf Cotton
PE1 Config
hostname PE1
ip vrf Cotton
rd 1:1
address-family ipv4
route-target import 1:1
route-target export 1:1
$
$
interface loopback0
ip address 10.10.10.1 255.255.255.255
$
interface xxvgei-1/1/0/2
description To_PE2
ip address 192.168.12.1 255.255.255.0
$
interface xxvgei-1/1/0/3
description To_CE1
$
interface xxvgei-1/1/0/3.100
description To_CE1_VLAN100
ip vrf forwarding Cotton
ip address 100.1.1.1 255.255.255.0
$
vlan-configuration
interface xxvgei-1/1/0/3.100
encapsulation-dot1q 100
$
$
segment-routing
ipv4-mpls prefix-sid 10.10.10.1/32 index 10001 node-flag
$
router bgp 100
bgp router-id 10.10.10.1
network 10.10.10.1 255.255.255.255
neighbor 10.10.10.2 remote-as 100
neighbor 10.10.10.2 activate
neighbor 10.10.10.2 send-label
neighbor 10.10.10.2 update-source loopback0
neighbor 10.10.10.4 remote-as 200
neighbor 10.10.10.4 activate disable
neighbor 10.10.10.4 ebgp-multihop ttl 3
neighbor 10.10.10.4 update-source loopback0
address-family vpnv4
neighbor 10.10.10.4 activate
$
address-family ipv4 vrf Cotton
redistribute connected
$
$
router isis 1
area 49.0001
system-id 0100.1001.0001
router-id 10.10.10.1
is-type level-2-only
metric-style wide
segment-routing mpls enable
interface loopback0
circuit-type level-2-only
ip router isis
passive-mode
$
interface xxvgei-1/1/0/2
circuit-type level-2-only
ip router isis
network point-to-point
$
$
PE2 Config
hostname PE2
interface xxvgei-1/1/0/1
description To_PE2
ip address 192.168.23.2 255.255.255.0
$
interface xxvgei-1/1/0/2
description To_PE1
ip address 192.168.12.2 255.255.255.0
$
interface loopback0
ip address 10.10.10.2 255.255.255.255
$
route-map ebgp_apply_label permit 10
set mpls-label
$
route-map ibgp_apply_label permit 10
match mpls-label
set mpls-label
$
segment-routing
ipv4-mpls prefix-sid 10.10.10.2/32 index 10002 node-flag
$
router bgp 100
bgp router-id 10.10.10.2
network 10.10.10.2 255.255.255.255
neighbor 10.10.10.1 remote-as 100
neighbor 10.10.10.1 activate
neighbor 10.10.10.1 next-hop-self all
neighbor 10.10.10.1 send-label
neighbor 10.10.10.1 update-source loopback0
neighbor 10.10.10.1 route-map ibgp_apply_label out
neighbor 192.168.23.3 remote-as 200
neighbor 192.168.23.3 activate
neighbor 192.168.23.3 send-label
neighbor 192.168.23.3 route-map ebgp_apply_label out
$
router isis 1
area 49.0001
system-id 0100.1001.0002
router-id 10.10.10.2
is-type level-2-only
metric-style wide
segment-routing mpls enable
interface loopback0
circuit-type level-2-only
ip router isis
passive-mode
$
interface xxvgei-1/1/0/2
circuit-type level-2-only
ip router isis
network point-to-point
$
$
PE3 Config
hostname PE3
interface xxvgei-1/1/0/1
description To_PE2
ip address 192.168.23.3 255.255.255.0
$
interface xxvgei-1/1/0/2
description To_PE4
ip address 192.168.34.3 255.255.255.0
$
interface loopback0
ip address 10.10.10.3 255.255.255.255
$
route-map ebgp_apply_label permit 10
set mpls-label
$
route-map ibgp_apply_label permit 10
match mpls-label
set mpls-label
$
segment-routing
ipv4-mpls prefix-sid 10.10.10.3/32 index 10003 node-flag
$
router bgp 200
bgp router-id 10.10.10.3
network 10.10.10.3 255.255.255.255
neighbor 10.10.10.4 remote-as 200
neighbor 10.10.10.4 activate
neighbor 10.10.10.4 next-hop-self all
neighbor 10.10.10.4 send-label
neighbor 10.10.10.4 update-source loopback0
neighbor 10.10.10.4 route-map ibgp_apply_label out
neighbor 192.168.23.2 remote-as 100
neighbor 192.168.23.2 activate
neighbor 192.168.23.2 send-label
neighbor 192.168.23.2 route-map ebgp_apply_label out
$
router ospf 1
router-id 10.10.10.3
area 0.0.0.0
interface loopback0
passive
$
interface xxvgei-1/1/0/2
network point-to-point
$
$
segment-routing mpls enable
$
PE4 Config
hostname PE4
ip vrf Cotton
rd 1:1
address-family ipv4
route-target import 1:1
route-target export 1:1
$
$
interface xxvgei-1/1/0/2
description To_PE3
ip address 192.168.34.4 255.255.255.0
$
interface xxvgei-1/1/0/3
description To_CE2
$
interface xxvgei-1/1/0/3.100
description To_CE2_VLAN100
ip vrf forwarding Cotton
ip address 100.2.2.1 255.255.255.0
$
interface loopback0
ip address 10.10.10.4 255.255.255.255
$
vlan-configuration
interface xxvgei-1/1/0/3.100
encapsulation-dot1q 100
$
$
segment-routing
ipv4-mpls prefix-sid 10.10.10.4/32 index 10004 node-flag
$
router bgp 200
bgp router-id 10.10.10.4
network 10.10.10.4 255.255.255.255
neighbor 10.10.10.1 remote-as 100
neighbor 10.10.10.1 activate disable
neighbor 10.10.10.1 ebgp-multihop ttl 3
neighbor 10.10.10.1 update-source loopback0
neighbor 10.10.10.3 remote-as 200
neighbor 10.10.10.3 activate
neighbor 10.10.10.3 send-label
neighbor 10.10.10.3 update-source loopback0
address-family vpnv4
neighbor 10.10.10.1 activate
$
address-family ipv4 vrf Cotton
redistribute connected
$
$
router ospf 1
router-id 10.10.10.4
area 0.0.0.0
interface loopback0
passive
$
interface xxvgei-1/1/0/2
network point-to-point
$
$
segment-routing mpls enable
$
CE1 Config
hostname CE1
interface xxvgei-1/1/0/3
description To_PE1
$
interface xxvgei-1/1/0/3.100
description To_PE1_VLAN100
ip address 100.1.1.2 255.255.255.0
$
vlan-configuration
interface xxvgei-1/1/0/3.100
encapsulation-dot1q 100
$
$
ip route 100.2.2.0 255.255.255.0 xxvgei-1/1/0/3.100 100.1.1.1 name CE2
CE2 Config
hostname CE2
interface xxvgei-1/1/0/3
description To_PE4
$
interface xxvgei-1/1/0/3.100
description To_PE4_VLAN100
ip address 100.2.2.2 255.255.255.0
$
vlan-configuration
interface xxvgei-1/1/0/3.100
encapsulation-dot1q 100
$
$
ip route 100.1.1.0 255.255.255.0 xxvgei-1/1/0/3.100 100.2.2.1 name CE1
CE1 Ping test
CE1#ping 100.2.2.2 source 100.1.1.2 sending 5,100-byte ICMP echo(es) to 100.2.2.2,timeout is 2 second(s). !!!!! Success rate is 100 percent(5/5),round-trip min/avg/max= 60/75/97 ms. [finish] CE1#
PE1 verify status
PE1#show isis adjacency
Process ID: 1
Interface System id State Lev Holds SNPA(802.2) Pri MT NSF AF
xxvgei-1/1/0/2 PE2 UP L2 29 PPP - Disable IPv4
PE1#
PE1#show ip forwarding route
IPv4 Routing Table:
Status codes: *valid, >best, R: Relay;
Dest Gw Interface Owner Pri Metric
*> 10.10.10.1/32 10.10.10.1 loopback0 Address 0 0
*> 10.10.10.2/32 192.168.12.2 xxvgei-1/1/0/2 ISIS-L2 115 10
*> 10.10.10.3/32 10.10.10.2 xxvgei-1/1/0/2 BGP 200 0
*> 10.10.10.4/32 10.10.10.2 xxvgei-1/1/0/2 BGP 200 0
*> 192.168.12.0/24 192.168.12.1 xxvgei-1/1/0/2 Direct 0 0
*> 192.168.12.1/32 192.168.12.1 xxvgei-1/1/0/2 Address 0 0
PE1#
PE1#show mpls forwarding-table
Local Outgoing Prefix or Outgoing Next Hop M/S
label label Lspname interface
910001 Untagged 10.10.10.1/32 loopback0 10.10.10.1 M
910002 910002 10.10.10.2/32 xxvgei-1/1/0/2 192.168.12.2 M
PE1#
PE1#ping mpls ipv4 10.10.10.4 32 source 10.10.10.1
sending 5,120-byte MPLS echo(es) to 10.10.10.4,timeout is 2 second(s).
!!!!!
Success rate is 100 percent(5/5),round-trip min/avg/max= 36/39/43 ms.
PE1#
PE1#show segment-routing ipv4-mpls prefix-sid remote
Codes: N = Node-flag; E = Explicit-null; I = Implicit-null; NH = Next-hop;
Marks: * = valid; > = best; I = ISIS; O = OSPF;
*>I 10.10.10.2/32 SID:10002 SID-Flag:N
Via:192.168.12.2 Router-ID:10.10.10.2
NH-SID:10002 NH-SID-Flag:N
PE1#
PE1#show ip bgp labels
Network Next Hop In Label/Out Label
10.10.10.1/32 10.10.10.1 notag/notag
10.10.10.2/32 10.10.10.2 notag/492018
10.10.10.3/32 10.10.10.2 notag/492020
10.10.10.4/32 10.10.10.2 notag/492019
PE1#
PE1#show bgp all summary
BGP router ID : 10.10.10.1
Local AS : 100
All peers : 2
Established : 2
Neighbor Ver As MsgRcvd MsgSend Up/Down State
10.10.10.2 4 100 77 73 01:05:15 Established
10.10.10.4 4 200 46 46 00:38:52 Established
PE1#
PE1#show bgp ipv4 unicast neighbor in 10.10.10.2
Routes Learned From This Neighbor:
Status codes: * valid, < last valid, i - internal, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router ID 10.10.10.1, Local AS 100, Local port 20052
Remote router ID 10.10.10.2, Remote AS 100, Remote port 179
Total number of routes: 3
Valid routes : 3
Invalid routes : 0
Network Next Hop Metric LocPrf RtPrf Path
* i 10.10.10.2/32 10.10.10.2 100 200 i
* i 10.10.10.3/32 10.10.10.2 100 200 200 i
* i 10.10.10.4/32 10.10.10.2 100 200 200 i
PE1#
PE1#show bgp ipv4 unicast neighbor out 10.10.10.2
Routes Sent To This Neighbor:
Origin codes: i - IGP, e - EGP, ? - incomplete
Total number of routes: 1
Network Next Hop From Metric LocPrf Path
10.10.10.1/32 10.10.10.1 100 i
PE1#
PE1#show bgp vpnv4 unicast neighbor in 10.10.10.4
Routes Learned From This Neighbor:
Status codes: * valid, < last valid, i - internal, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router ID 10.10.10.1, Local AS 100, Local port 20054
Remote router ID 10.10.10.4, Remote AS 200, Remote port 179
Total number of routes: 1
Valid routes : 1
Invalid routes : 0
Dest Next Hop Metric LocPrf InTag Path
Route Distinguisher:1:1 (default for vrf Cotton)
* 100.2.2.0/24 10.10.10.4 27684 200 ?
PE1#
PE1#show bgp vpnv4 unicast neighbor out 10.10.10.4
Routes Sent To This Neighbor:
Origin codes: i - IGP, e - EGP, ? - incomplete
Total number of routes: 1
Network Next Hop From Metric LocPrf Tag Path
Route Distinguisher:1:1 (default for vrf Cotton)
100.1.1.0/24 10.10.10.1 339776 100 ?
PE1#
PE1#show ip bgp route detail 10.10.10.4 32
BGP routing table entry for 10.10.10.4/32
02:32:53(Age 00:39:00) received from 10.10.10.2 (10.10.10.2), path-id 0
Origin i, nexthop 10.10.10.2(metric 10), localpref 100, weight 0, rtpref 200, best, selected,
As path [200]
Received label 492019(0x781f3)
PE1#
PE1#show ip forwarding route vrf Cotton
Routes: 3 Route-paths: 3
IPv4 Routing Table:
Headers: Dest: Destination, Gw: Gateway, Pri: Priority;
Codes : BROADC: Broadcast, USER-I: User-ipaddr, USER-S: User-special,
MULTIC: Multicast, USER-N: User-network, DHCP-D: DHCP-DFT,
ASBR-V: ASBR-VPN, STAT-V: Static-VRF, DHCP-S: DHCP-static,
GW-FWD: PS-BUSI, NAT64: Stateless-NAT64, LDP-A: LDP-area,
GW-UE: PS-USER, P-VRF: Per-VRF-label, TE: RSVP-TE, NAT-M : NAT-mask
BP: BRAS-pool, HAGP: Hybrid-access-gateway-protocol;
Status codes: *valid, >best, R: Relay;
Dest Gw Interface Owner Pri Metric
*> 100.1.1.0/24 100.1.1.1 xxvgei-1/1/0/3.100 Direct 0 0
*> 100.1.1.1/32 100.1.1.1 xxvgei-1/1/0/3.100 Address 0 0
*> 100.2.2.0/24 10.10.10.4 xxvgei-1/1/0/2 BGP 20 0
PE1#
PE2 verify status
PE2#show isis adjacency
Process ID: 1
Interface System id State Lev Holds SNPA(802.2) Pri MT NSF AF
xxvgei-1/1/0/2 PE1 UP L2 27 PPP - Disable IPv4
PE2#
PE2#show ip forwarding route
IPv4 Routing Table:
Status codes: *valid, >best, R: Relay;
Dest Gw Interface Owner Pri Metric
*> 10.10.10.1/32 192.168.12.1 xxvgei-1/1/0/2 ISIS-L2 115 10
*> 10.10.10.2/32 10.10.10.2 loopback0 Address 0 0
*> 10.10.10.3/32 192.168.23.3 xxvgei-1/1/0/1 BGP 20 0
*> 10.10.10.4/32 192.168.23.3 xxvgei-1/1/0/1 BGP 20 0
*> 192.168.12.0/24 192.168.12.2 xxvgei-1/1/0/2 Direct 0 0
*> 192.168.12.2/32 192.168.12.2 xxvgei-1/1/0/2 Address 0 0
*> 192.168.23.0/24 192.168.23.2 xxvgei-1/1/0/1 Direct 0 0
*> 192.168.23.2/32 192.168.23.2 xxvgei-1/1/0/1 Address 0 0
PE2#
PE2#show mpls forwarding-table
Local Outgoing Prefix or Outgoing Next Hop M/S
label label Lspname interface
910001 910001 10.10.10.1/32 xxvgei-1/1/0/2 192.168.12.1 M
910002 Untagged 10.10.10.2/32 loopback0 10.10.10.2 M
PE2#
PE2#show segment-routing ipv4-mpls prefix-sid remote
Codes: N = Node-flag; E = Explicit-null; I = Implicit-null; NH = Next-hop;
Marks: * = valid; > = best; I = ISIS; O = OSPF;
*>I 10.10.10.1/32 SID:10001 SID-Flag:N
Via:192.168.12.1 Router-ID:10.10.10.1
NH-SID:10001 NH-SID-Flag:N
PE2#
PE2#show ip bgp labels
Network Next Hop In Label/Out Label
10.10.10.1/32 10.10.10.1 492021/notag
10.10.10.2/32 10.10.10.2 492018/notag
10.10.10.3/32 192.168.23.3 492020/687931
10.10.10.4/32 192.168.23.3 492019/687932
PE2#
PE2#show bgp all summary
BGP router ID : 10.10.10.2
Local AS : 100
All peers : 2
Established : 2
Neighbor Ver As MsgRcvd MsgSend Up/Down State
10.10.10.1 4 100 78 2 01:08:54 Established
192.168.23.3 4 200 132 8 01:53:15 Established
PE2#
PE2#show bgp ipv4 unicast neighbor in 10.10.10.1
Routes Learned From This Neighbor:
Status codes: * valid, < last valid, i - internal, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router ID 10.10.10.2, Local AS 100, Local port 179
Remote router ID 10.10.10.1, Remote AS 100, Remote port 20052
Total number of routes: 1
Valid routes : 1
Invalid routes : 0
Network Next Hop Metric LocPrf RtPrf Path
* i 10.10.10.1/32 10.10.10.1 100 200 i
PE2#
PE2#show bgp ipv4 unicast neighbor out 10.10.10.1
Routes Sent To This Neighbor:
Origin codes: i - IGP, e - EGP, ? - incomplete
Total number of routes: 3
Network Next Hop From Metric LocPrf Path
10.10.10.2/32 10.10.10.2 100 i
10.10.10.3/32 10.10.10.2 192.168.23.3 100 200 i
10.10.10.4/32 10.10.10.2 192.168.23.3 100 200 i
PE2#
PE2#show bgp ipv4 unicast neighbor in 192.168.23.3
Routes Learned From This Neighbor:
Status codes: * valid, < last valid, i - internal, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router ID 10.10.10.2, Local AS 100, Local port 179
Remote router ID 10.10.10.3, Remote AS 200, Remote port 20012
Total number of routes: 2
Valid routes : 2
Invalid routes : 0
Network Next Hop Metric LocPrf RtPrf Path
* 10.10.10.3/32 192.168.23.3 20 200 i
* 10.10.10.4/32 192.168.23.3 20 200 i
PE2#
PE2#show bgp ipv4 unicast neighbor out 192.168.23.3
Routes Sent To This Neighbor:
Origin codes: i - IGP, e - EGP, ? - incomplete
Total number of routes: 2
Network Next Hop From Metric LocPrf Path
10.10.10.1/32 192.168.23.2 10.10.10.1 100 i
10.10.10.2/32 192.168.23.2 100 i
PE2#
PE2#show ip bgp route detail 10.10.10.1 32
BGP routing table entry for 10.10.10.1/32
02:32:49(Age 00:42:34) received from 10.10.10.1 (10.10.10.1), path-id 0
Origin i, nexthop 10.10.10.1(metric 10), localpref 100, weight 0, rtpref 200,
As path
Received label notag
Bgp-rib-only due to next-hop-loop
02:32:49(Age 00:42:34) advertised to UpdateGroup Index: 3,
To 1 peer(s): 192.168.23.3
Origin i,
As path(to 192.168.23.3) [100]
Sent label 492021(0x781f5)
PE2#
PE2#show ip bgp route detail 10.10.10.4 32
BGP routing table entry for 10.10.10.4/32
01:58:18(Age 01:17:05) received from 192.168.23.3 (10.10.10.3), path-id 0
Origin i, nexthop 192.168.23.3(metric 0), weight 0, rtpref 20, best, selected,
As path [200]
Received label 687932(0xa7f3c)
02:06:29(Age 01:08:54) advertised to UpdateGroup Index: 5,
To 1 peer(s): 10.10.10.1
Origin i, localpref 100,
As path(to 10.10.10.1) [200]
Sent label 492019(0x781f3)
PE2#
PE3 verify status
PE3#show ip ospf neighbor
Codes: *: Multi-Area Interface
OSPF Router with ID (10.10.10.3) (Process ID 1)
Neighbor ID Pri State DeadTime Address Interface
10.10.10.4 1 FULL/-- 00:00:38 192.168.34.4 xxvgei-1/1/0/2
PE3#
PE3#show ip forwarding route
IPv4 Routing Table:
Status codes: *valid, >best, R: Relay;
Dest Gw Interface Owner Pri Metric
*> 10.10.10.1/32 192.168.23.2 xxvgei-1/1/0/1 BGP 20 0
*> 10.10.10.2/32 192.168.23.2 xxvgei-1/1/0/1 BGP 20 0
*> 10.10.10.3/32 10.10.10.3 loopback0 Address 0 0
*> 10.10.10.4/32 192.168.34.4 xxvgei-1/1/0/2 OSPF 110 1
*> 192.168.23.0/24 192.168.23.3 xxvgei-1/1/0/1 Direct 0 0
*> 192.168.23.3/32 192.168.23.3 xxvgei-1/1/0/1 Address 0 0
*> 192.168.34.0/24 192.168.34.3 xxvgei-1/1/0/2 Direct 0 0
*> 192.168.34.3/32 192.168.34.3 xxvgei-1/1/0/2 Address 0 0
PE3#
PE3#show mpls forwarding-table
Local Outgoing Prefix or Outgoing Next Hop M/S
label label Lspname interface
910003 Untagged 10.10.10.3/32 loopback0 10.10.10.3 M
910004 910004 10.10.10.4/32 xxvgei-1/1/0/2 192.168.34.4 M
PE3#
PE3#show segment-routing ipv4-mpls adjacency-sid remote
Codes: L- = Local-; R- = Remote-; * = ID;
L-Router-ID L-Description R-Router-ID R-Description SID
10.10.10.4 192.168.34.4 10.10.10.3 192.168.34.3 965536
PE3#
PE3#show ip bgp labels
Network Next Hop In Label/Out Label
10.10.10.1/32 192.168.23.2 687933/492021
10.10.10.2/32 192.168.23.2 687934/492018
10.10.10.3/32 10.10.10.3 687931/notag
10.10.10.4/32 10.10.10.4 687932/notag
PE3#
PE3#show bgp all summary
BGP router ID : 10.10.10.3
Local AS : 200
All peers : 2
Established : 2
Neighbor Ver As MsgRcvd MsgSend Up/Down State
10.10.10.4 4 200 95 98 01:21:51 Established
192.168.23.2 4 100 142 137 01:58:01 Established
PE3#
PE3#show bgp ipv4 unicast neighbor in 10.10.10.4
Routes Learned From This Neighbor:
Status codes: * valid, < last valid, i - internal, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router ID 10.10.10.3, Local AS 200, Local port 179
Remote router ID 10.10.10.4, Remote AS 200, Remote port 20007
Total number of routes: 1
Valid routes : 1
Invalid routes : 0
Network Next Hop Metric LocPrf RtPrf Path
* i 10.10.10.4/32 10.10.10.4 100 200 i
PE3#
PE3#show bgp ipv4 unicast neighbor out 10.10.10.4
Routes Sent To This Neighbor:
Origin codes: i - IGP, e - EGP, ? - incomplete
Total number of routes: 3
Network Next Hop From Metric LocPrf Path
10.10.10.1/32 10.10.10.3 192.168.23.2 100 100 i
10.10.10.2/32 10.10.10.3 192.168.23.2 100 100 i
10.10.10.3/32 10.10.10.3 100 i
PE3#
PE3#show bgp ipv4 unicast neighbor in 192.168.23.2
Routes Learned From This Neighbor:
Status codes: * valid, < last valid, i - internal, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router ID 10.10.10.3, Local AS 200, Local port 20012
Remote router ID 10.10.10.2, Remote AS 100, Remote port 179
Total number of routes: 2
Valid routes : 2
Invalid routes : 0
Network Next Hop Metric LocPrf RtPrf Path
* 10.10.10.1/32 192.168.23.2 20 100 i
* 10.10.10.2/32 192.168.23.2 20 100 i
PE3#
PE3#show bgp ipv4 unicast neighbor out 192.168.23.2
Routes Sent To This Neighbor:
Origin codes: i - IGP, e - EGP, ? - incomplete
Total number of routes: 2
Network Next Hop From Metric LocPrf Path
10.10.10.3/32 192.168.23.3 200 i
10.10.10.4/32 192.168.23.3 10.10.10.4 200 i
PE3#
PE3#show ip bgp route detail 10.10.10.1 32
BGP routing table entry for 10.10.10.1/32
02:32:47(Age 00:47:20) received from 192.168.23.2 (10.10.10.2), path-id 0
Origin i, nexthop 192.168.23.2(metric 0), weight 0, rtpref 20, best, selected,
As path [100]
Received label 492021(0x781f5)
02:32:47(Age 00:47:20) advertised to UpdateGroup Index: 4,
To 1 peer(s): 10.10.10.4
Origin i, localpref 100,
As path(to 10.10.10.4) [100]
Sent label 687933(0xa7f3d)
PE3#
PE3#show ip bgp route detail 10.10.10.4 32
BGP routing table entry for 10.10.10.4/32
01:58:16(Age 01:21:51) received from 10.10.10.4 (10.10.10.4), path-id 0
Origin i, nexthop 10.10.10.4(metric 1), localpref 100, weight 0, rtpref 200,
As path
Received label notag
Bgp-rib-only due to next-hop-loop
01:58:16(Age 01:21:51) advertised to UpdateGroup Index: 2,
To 1 peer(s): 192.168.23.2
Origin i,
As path(to 192.168.23.2) [200]
Sent label 687932(0xa7f3c)
PE3#
PE4 verify status
PE4#show ip ospf neighbor
Codes: *: Multi-Area Interface
OSPF Router with ID (10.10.10.4) (Process ID 1)
Neighbor ID Pri State DeadTime Address Interface
10.10.10.3 1 FULL/-- 00:00:34 192.168.34.3 xxvgei-1/1/0/2
PE4#
PE4#show ip forwarding route
IPv4 Routing Table:
Status codes: *valid, >best, R: Relay;
Dest Gw Interface Owner Pri Metric
*> 10.10.10.1/32 10.10.10.3 xxvgei-1/1/0/2 BGP 200 0
*> 10.10.10.2/32 10.10.10.3 xxvgei-1/1/0/2 BGP 200 0
*> 10.10.10.3/32 192.168.34.3 xxvgei-1/1/0/2 OSPF 110 1
*> 10.10.10.4/32 10.10.10.4 loopback0 Address 0 0
*> 192.168.34.0/24 192.168.34.4 xxvgei-1/1/0/2 Direct 0 0
*> 192.168.34.4/32 192.168.34.4 xxvgei-1/1/0/2 Address 0 0
PE4#
PE4#show mpls forwarding-table
Local Outgoing Prefix or Outgoing Next Hop M/S
label label Lspname interface
910003 910003 10.10.10.3/32 xxvgei-1/1/0/2 192.168.34.3 M
910004 Untagged 10.10.10.4/32 loopback0 10.10.10.4 M
PE4#
PE4#ping mpls ipv4 10.10.10.1 32 source 10.10.10.4
sending 5,120-byte MPLS echo(es) to 10.10.10.1,timeout is 2 second(s).
!!!!!
Success rate is 100 percent(5/5),round-trip min/avg/max= 36/39/43 ms.
PE4#
PE4#show segment-routing ipv4-mpls adjacency-sid remote
Codes: L- = Local-; R- = Remote-; * = ID;
L-Router-ID L-Description R-Router-ID R-Description SID
10.10.10.3 192.168.34.3 10.10.10.4 192.168.34.4 965536
PE4#
PE4#show ip bgp labels
Network Next Hop In Label/Out Label
10.10.10.1/32 10.10.10.3 notag/687933
10.10.10.2/32 10.10.10.3 notag/687934
10.10.10.3/32 10.10.10.3 notag/687931
10.10.10.4/32 10.10.10.4 notag/notag
PE4#
PE4#show bgp all summary
BGP router ID : 10.10.10.4
Local AS : 200
All peers : 2
Established : 2
Neighbor Ver As MsgRcvd MsgSend Up/Down State
10.10.10.1 4 100 60 2 00:49:47 Established
10.10.10.3 4 200 102 4 01:24:20 Established
PE4#
PE4#show bgp ipv4 unicast neighbor in 10.10.10.3
Routes Learned From This Neighbor:
Status codes: * valid, < last valid, i - internal, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router ID 10.10.10.4, Local AS 200, Local port 20007
Remote router ID 10.10.10.3, Remote AS 200, Remote port 179
Total number of routes: 3
Valid routes : 3
Invalid routes : 0
Network Next Hop Metric LocPrf RtPrf Path
* i 10.10.10.1/32 10.10.10.3 100 200 100 i
* i 10.10.10.2/32 10.10.10.3 100 200 100 i
* i 10.10.10.3/32 10.10.10.3 100 200 i
PE4#
PE4#show bgp ipv4 unicast neighbor out 10.10.10.3
Routes Sent To This Neighbor:
Origin codes: i - IGP, e - EGP, ? - incomplete
Total number of routes: 1
Network Next Hop From Metric LocPrf Path
10.10.10.4/32 10.10.10.4 100 i
PE4#
PE4#show bgp vpnv4 unicast neighbor in 10.10.10.1
Routes Learned From This Neighbor:
Status codes: * valid, < last valid, i - internal, s - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Local router ID 10.10.10.4, Local AS 200, Local port 179
Remote router ID 10.10.10.1, Remote AS 100, Remote port 20054
Total number of routes: 1
Valid routes : 1
Invalid routes : 0
Dest Next Hop Metric LocPrf InTag Path
Route Distinguisher:1:1 (default for vrf Cotton)
* 100.1.1.0/24 10.10.10.1 339776 100 ?
PE4#
PE4#show bgp vpnv4 unicast neighbor out 10.10.10.1
Routes Sent To This Neighbor:
Origin codes: i - IGP, e - EGP, ? - incomplete
Total number of routes: 1
Network Next Hop From Metric LocPrf Tag Path
Route Distinguisher:1:1 (default for vrf Cotton)
100.2.2.0/24 10.10.10.4 27684 200 ?
PE4#
PE4#show ip bgp route detail 10.10.10.1 32
BGP routing table entry for 10.10.10.1/32
02:32:54(Age 00:49:48) received from 10.10.10.3 (10.10.10.3), path-id 0
Origin i, nexthop 10.10.10.3(metric 1), localpref 100, weight 0, rtpref 200, best, selected,
As path [100]
Received label 687933(0xa7f3d)
PE4#
PE4#show ip forwarding route vrf Cotton
Routes: 3 Route-paths: 3
IPv4 Routing Table:
Headers: Dest: Destination, Gw: Gateway, Pri: Priority;
Codes : BROADC: Broadcast, USER-I: User-ipaddr, USER-S: User-special,
MULTIC: Multicast, USER-N: User-network, DHCP-D: DHCP-DFT,
ASBR-V: ASBR-VPN, STAT-V: Static-VRF, DHCP-S: DHCP-static,
GW-FWD: PS-BUSI, NAT64: Stateless-NAT64, LDP-A: LDP-area,
GW-UE: PS-USER, P-VRF: Per-VRF-label, TE: RSVP-TE, NAT-M : NAT-mask
BP: BRAS-pool, HAGP: Hybrid-access-gateway-protocol;
Status codes: *valid, >best, R: Relay;
Dest Gw Interface Owner Pri Metric
*> 100.1.1.0/24 10.10.10.1 xxvgei-1/1/0/2 BGP 20 0
*> 100.2.2.0/24 100.2.2.1 xxvgei-1/1/0/3.100 Direct 0 0
*> 100.2.2.1/32 100.2.2.1 xxvgei-1/1/0/3.100 Address 0 0
PE4#
ดู label stack จาก capture traffic ด้วย wireshark
ผมลืมกด capture traffic ที่ HOP3 ใช้ HOP1 เทียบผลเอานะครับ
HOP1 PE1 -> PE2
Frame 22: 126 bytes on wire (1008 bits), 126 bytes captured (1008 bits) Ethernet II, Src: Xensource_64:39:01 (00:16:3e:64:39:01), Dst: Xensource_64:3f:01 (00:16:3e:64:3f:01) MultiProtocol Label Switching Header, Label: 910002, Exp: 0, S: 0, TTL: 254 MultiProtocol Label Switching Header, Label: 492019, Exp: 0, S: 0, TTL: 254 MultiProtocol Label Switching Header, Label: 27684, Exp: 0, S: 1, TTL: 254 Internet Protocol Version 4, Src: 100.1.1.2, Dst: 100.2.2.2 Internet Control Message Protocol
HOP1 PE2 -> PE1
Frame 23: 122 bytes on wire (976 bits), 122 bytes captured (976 bits) Ethernet II, Src: Xensource_64:3f:01 (00:16:3e:64:3f:01), Dst: Xensource_64:39:01 (00:16:3e:64:39:01) MultiProtocol Label Switching Header, Label: 910001, Exp: 0, S: 0, TTL: 252 MultiProtocol Label Switching Header, Label: 339776, Exp: 0, S: 1, TTL: 254 Internet Protocol Version 4, Src: 100.2.2.2, Dst: 100.1.1.2 Internet Control Message Protocol
HOP2 PE2 -> PE3
Frame 7: 122 bytes on wire (976 bits), 122 bytes captured (976 bits) Ethernet II, Src: Xensource_64:3f:01 (00:16:3e:64:3f:01), Dst: Xensource_64:40:01 (00:16:3e:64:40:01) MultiProtocol Label Switching Header, Label: 687932, Exp: 0, S: 0, TTL: 253 MultiProtocol Label Switching Header, Label: 27684, Exp: 0, S: 1, TTL: 254 Internet Protocol Version 4, Src: 100.1.1.2, Dst: 100.2.2.2 Internet Control Message Protocol
HOP2 PE3 -> PE2
Frame 8: 122 bytes on wire (976 bits), 122 bytes captured (976 bits) Ethernet II, Src: Xensource_64:40:01 (00:16:3e:64:40:01), Dst: Xensource_64:3f:01 (00:16:3e:64:3f:01) MultiProtocol Label Switching Header, Label: 492021, Exp: 0, S: 0, TTL: 253 MultiProtocol Label Switching Header, Label: 339776, Exp: 0, S: 1, TTL: 254 Internet Protocol Version 4, Src: 100.2.2.2, Dst: 100.1.1.2 Internet Control Message Protocol
