[c-nsp] OTV between couple of CSRs 1000v and dot1q TAG rewriting
Mohammad Khalil
eng_mssk at hotmail.com
Tue Sep 1 06:15:21 EDT 2015
Hi all
I got interested in your mail and tried to simulate the feature using GNS3 , please find below my configurations and outputs
Topology:
R1 -- ASR1 -- R3 -- ASR2 -- R2
I have connected the cloud routers to an intermediate router as I cannot connect directly between the clouds
Configurations:
ASR1
hostname ASR1
otv site bridge-domain 1
otv site-identifier 0000.0000.0001
interface Loopback0
ip address 1.1.1.1 255.255.255.255
interface Overlay1
no ip address
otv join-interface GigabitEthernet1
otv use-adjacency-server 192.168.13.1 unicast-only
otv adjacency-server unicast-only
service instance 50 ethernet
encapsulation dot1q 100
bridge-domain 200
service instance 51 ethernet
encapsulation dot1q 101
bridge-domain 201
service instance 52 ethernet
encapsulation dot1q 33
bridge-domain 202
interface GigabitEthernet1
mtu 4470
ip address 192.168.13.1 255.255.255.0
negotiation auto
interface GigabitEthernet2
no ip address
negotiation auto
service instance 1 ethernet
encapsulation untagged
bridge-domain 1
service instance 50 ethernet
encapsulation dot1q 100
bridge-domain 200
service instance 51 ethernet
encapsulation dot1q 101
bridge-domain 201
service instance 52 ethernet
encapsulation dot1q 13
rewrite ingress tag translate 1-to-1 dot1q 33 symmetric
bridge-domain 202
router ospf 1
router-id 1.1.1.1
network 1.1.1.1 0.0.0.0 area 0
network 192.168.13.1 0.0.0.0 area 0
ASR2
hostname ASR2
otv site bridge-domain 1
otv site-identifier 0000.0000.0002
interface Loopback0
ip address 2.2.2.2 255.255.255.255
interface Overlay1
no ip address
otv join-interface GigabitEthernet1
otv use-adjacency-server 192.168.13.1 unicast-only
service instance 50 ethernet
encapsulation dot1q 100
bridge-domain 200
service instance 51 ethernet
encapsulation dot1q 101
bridge-domain 201
service instance 52 ethernet
encapsulation dot1q 33
bridge-domain 202
interface GigabitEthernet1
mtu 4470
ip address 192.168.23.2 255.255.255.0
negotiation auto
interface GigabitEthernet2
no ip address
negotiation auto
service instance 1 ethernet
encapsulation untagged
bridge-domain 1
service instance 50 ethernet
encapsulation dot1q 100
bridge-domain 200
service instance 51 ethernet
encapsulation dot1q 101
bridge-domain 201
service instance 52 ethernet
encapsulation dot1q 33
bridge-domain 202
router ospf 1
router-id 2.2.2.2
network 2.2.2.2 0.0.0.0 area 0
network 192.168.23.2 0.0.0.0 area 0
R1
interface Vlan100
ip address 192.168.100.11 255.255.255.0
interface Vlan101
ip address 192.168.101.11 255.255.255.0
interface Vlan13
ip address 192.168.133.1 255.255.255.0
interface FastEthernet1/0
switchport mode trunk
R2
interface Vlan100
ip address 192.168.100.12 255.255.255.0
interface Vlan101
ip address 192.168.101.12 255.255.255.0
interface Vlan33
ip address 192.168.133.3 255.255.255.0
interface FastEthernet1/0
switchport mode trunk
Outputs:
R1#ping 192.168.100.12
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.100.12, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/265/692 ms
R1#ping 192.168.101.12
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.101.12, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/115/272 ms
R1#ping 192.168.133.3 source vlan 13
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.133.3, timeout is 2 seconds:
Packet sent with a source address of 192.168.133.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/44/80 ms
ASR1# show otv
Overlay Interface Overlay1
VPN name : None
VPN ID : 1
State : UP
Fwd-capable : Yes
Fwd-ready : Yes
AED-Server : Yes
Backup AED-Server : No
AED Capable : Yes
Join interface(s) : GigabitEthernet1
Join IPv4 address : 192.168.13.1
Tunnel interface(s) : Tunnel0
Encapsulation format : GRE/IPv4
Site Bridge-Domain : 1
Capability : Unicast-only
Is Adjacency Server : Yes
Adj Server Configured : Yes
Prim/Sec Adj Svr(s) : 192.168.13.1
ASR1# show otv route vlan 100
Codes: BD - Bridge-Domain, AD - Admin-Distance,
SI - Service Instance, * - Backup Route
OTV Unicast MAC Routing Table for Overlay1
Inst VLAN BD MAC Address AD Owner Next Hops(s)
----------------------------------------------------------
0 100 200 c201.1ea0.0000 40 BD Eng Gi2:SI50
0 100 200 c202.1ce4.0000 50 ISIS ASR2
2 unicast routes displayed in Overlay1
----------------------------------------------------------
2 Total Unicast Routes Displayed
ASR1# show otv route vlan 101
Codes: BD - Bridge-Domain, AD - Admin-Distance,
SI - Service Instance, * - Backup Route
OTV Unicast MAC Routing Table for Overlay1
Inst VLAN BD MAC Address AD Owner Next Hops(s)
----------------------------------------------------------
0 101 201 c201.1ea0.0000 40 BD Eng Gi2:SI51
0 101 201 c202.1ce4.0000 50 ISIS ASR2
2 unicast routes displayed in Overlay1
----------------------------------------------------------
2 Total Unicast Routes Displayed
ASR1# show otv route vlan 13
Failed to find VLAN 13 in any Overlay
ASR1# show otv route vlan 33
Codes: BD - Bridge-Domain, AD - Admin-Distance,
SI - Service Instance, * - Backup Route
OTV Unicast MAC Routing Table for Overlay1
Inst VLAN BD MAC Address AD Owner Next Hops(s)
----------------------------------------------------------
0 33 202 c201.1ea0.0000 40 BD Eng Gi2:SI52
0 33 202 c202.1ce4.0000 50 ISIS ASR2
2 unicast routes displayed in Overlay1
----------------------------------------------------------
2 Total Unicast Routes Displayed
ASR2#show otv route vlan 100
Codes: BD - Bridge-Domain, AD - Admin-Distance,
SI - Service Instance, * - Backup Route
OTV Unicast MAC Routing Table for Overlay1
Inst VLAN BD MAC Address AD Owner Next Hops(s)
----------------------------------------------------------
0 100 200 0000.0c07.ac0a 50 ISIS ASR1
0 100 200 c201.1ea0.0000 50 ISIS ASR1
0 100 200 c202.1ce4.0000 40 BD Eng Gi2:SI50
3 unicast routes displayed in Overlay1
----------------------------------------------------------
3 Total Unicast Routes Displayed
ASR2#show otv route vlan 101
Codes: BD - Bridge-Domain, AD - Admin-Distance,
SI - Service Instance, * - Backup Route
OTV Unicast MAC Routing Table for Overlay1
Inst VLAN BD MAC Address AD Owner Next Hops(s)
----------------------------------------------------------
0 101 201 c201.1ea0.0000 50 ISIS ASR1
0 101 201 c202.1ce4.0000 40 BD Eng Gi2:SI51
2 unicast routes displayed in Overlay1
----------------------------------------------------------
2 Total Unicast Routes Displayed
ASR2#show otv route vlan 33
Codes: BD - Bridge-Domain, AD - Admin-Distance,
SI - Service Instance, * - Backup Route
OTV Unicast MAC Routing Table for Overlay1
Inst VLAN BD MAC Address AD Owner Next Hops(s)
----------------------------------------------------------
0 33 202 c201.1ea0.0000 50 ISIS ASR1
0 33 202 c202.1ce4.0000 40 BD Eng Gi2:SI52
2 unicast routes displayed in Overlay1
----------------------------------------------------------
2 Total Unicast Routes Displayed
ASR1#show otv vlan
Key: SI - Service Instance, NA - Non AED, NFC - Not Forward Capable.
Overlay 1 VLAN Configuration Information
Inst VLAN BD Auth ED State Site If(s)
0 33 202 *ASR1 active Gi2:SI52
0 100 200 *ASR1 active Gi2:SI50
0 101 201 *ASR1 active Gi2:SI51
Total VLAN(s): 3
ASR2#show otv vlan
Key: SI - Service Instance, NA - Non AED, NFC - Not Forward Capable.
Overlay 1 VLAN Configuration Information
Inst VLAN BD Auth ED State Site If(s)
0 33 202 *ASR2 active Gi2:SI52
0 100 200 *ASR2 active Gi2:SI50
0 101 201 *ASR2 active Gi2:SI51
Total VLAN(s): 3
I enabled capture as well to see the hello messages
ip access-list extended CAPTURE
permit udp host 192.168.13.1 host 192.168.23.2 eq 8472
permit udp host 192.168.23.2 host 192.168.13.1 eq 8472
monitor capture 1 buffer circular access-list CAPTURE interface g1 both
ASR1#show monitor capture 1 buffer brief
-------------------------------------------------------------
# size timestamp source destination protocol
-------------------------------------------------------------
0 150 0.000000 192.168.13.1 -> 192.168.23.2 UDP
1 1464 0.133040 192.168.23.2 -> 192.168.13.1 UDP
2 110 0.907002 192.168.13.1 -> 192.168.23.2 UDP
3 1464 1.300039 192.168.13.1 -> 192.168.23.2 UDP
4 1464 4.041990 192.168.13.1 -> 192.168.23.2 UDP
5 1464 7.110046 192.168.13.1 -> 192.168.23.2 UDP
6 150 8.562019 192.168.13.1 -> 192.168.23.2 UDP
7 110 9.149046 192.168.13.1 -> 192.168.23.2 UDP
8 1464 9.670015 192.168.13.1 -> 192.168.23.2 UDP
9 1464 9.773006 192.168.23.2 -> 192.168.13.1 UDP
10 1464 12.425032 192.168.13.1 -> 192.168.23.2 UDP
11 1464 15.151044 192.168.13.1 -> 192.168.23.2 UDP
Thanks
BR,
Mohammad Khalil
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