Saturday, June 30, 2012

PW Down, VSI Down, Layer-2 Circuit Down

Migration of Cisco CRS-1 to Huawei NE40E-X16 was performed few days ago & all goes well. After a day we received complaint about few sites from customer that they are not able to reach our backbone :(, while checking the related configuration for that customer, we notice that the Pseduowire is down, although we notice that vsi is down for that customer. migration was done on aggregator node. You can issue following command to see the status:

PE-AggX16-RegionName-2222-1 -- display vsi name Vlan8888 verbose

***VSI Name : Vlan8888
Administrator VSI : no
Isolate Spoken : disable
VSI Index : 28
PW Signaling : ldp
Member Discovery Style : static
PW MAC Learn Style : unqualify
Encapsulation Type : ethernet
MTU : 1500
VSI State : down
..................................................output Omitted

VSI ID : 8888
*Peer Router ID : 192.168.98.21
primary or secondary : primary
ignore-standby-state : no
VC Label : 5461
Peer Type : dynamic
State : down
.................................................output Omitted

**PW Information:

*Peer Ip Address : 192.168.98.21
PW State : down
Local VC Label : 5461
Remote VC Label : 28751
PW Type : label
.................................................output Omitted

After checking the configuration and logs we find out that at Agg-222, PW under VSI Vlan8888 was down. We found vsi id under vsi Vlan8888 was 8888 while at the peer Edge-333 that VSI ID was configured under different VSI. So we changed VSI-id at aggregator to 1880. At edge there was no vsi Vlan8888, so we create it & define same vsi-id under it whis is 1880.

Second, We also notice that Interface vlan 8888 was not bind to Vsi Vlan8888 at both Agg-222 and Edge-333, so we bind it to the interface vlan 8888 and then VSI came up.

Configuration done on both Aggreegator and Edge are:

Edge - 2222 Configuration:
==========================

vsi Vlan1058 static
pwsignal ldp
vsi-id 1880
peer 192.168.xx.xx
encapsulation ethernet
tnl-policy loadbalance

#
interface Vlanif8888
l2 binding vsi Vlan8888
#


Agg-2222 Configuration:
=======================

vsi Vlan1058 static
pwsignal ldp
vsi-id 1880
peer 192.168.xx.xx
encapsulation ethernet
tnl-policy loadbalance
#
interface Vlanif8888
l2 binding vsi Vlan8888


Verification:

PE-AggX16-RegionName-2222-1 -- dis vsi name Vlan8888
Vsi Mem PW Mac Encap Mtu Vsi
Name Disc Type Learn Type Value State
--------------------------------------------------------------------------
Vlan1058 static ldp unqualify ethernet 1500 up


PE-AggX16-RegionName-2222-1 -- display vsi name Vlan8888 verbose

***VSI Name : Vlan8888
Administrator VSI : no
Isolate Spoken : disable
VSI Index : 28
PW Signaling : ldp
Member Discovery Style : static
PW MAC Learn Style : unqualify
Encapsulation Type : ethernet
MTU : 1500
Diffserv Mode : uniform
Service Class : --
Color : --
DomainId : 255
Domain Name :
Tunnel Policy Name : loadbalance
Ignore AcState : disable
P2P VSI : disable
Create Time : 0 days, 0 hours, 26 minutes, 18 seconds
VSI State : up

VSI ID : 1880
*Peer Router ID : 192.168.xx.xx
primary or secondary : primary
ignore-standby-state : no
VC Label : 5461
Peer Type : dynamic
Session : up
Tunnel ID : 0x60036ed9
Broadcast Tunnel ID : 0x60036ed9
Broad BackupTunnel ID : 0x0
CKey : 69
NKey : 66
StpEnable : 0
PwIndex : 0

Interface Name : Vlanif8888
State : up
Access Port : false
Last Up Time : 2012/06/26 21:04:41
Total Up Time : 0 days, 0 hours, 10 minutes, 33 seconds

**PW Information:

*Peer Ip Address : 192.168.xx.xx
PW State : up
Local VC Label : 5461
Remote VC Label : 28751
PW Type : label
Tunnel ID : 0x60036ed9
Broadcast Tunnel ID : 0x60036ed9
Broad BackupTunnel ID : 0x0
Ckey : 0x45
Nkey : 0x42
Main PW Token : 0x40007e66
Slave PW Token : 0x40007e67
Tnl Type : LSP
OutInterface : Tunnel0/0/3000
Backup OutInterface :
Stp Enable : 0
Mac Flapping : 0
PW Last Up Time : 2012/06/26 21:04:41
PW Total Up Time : 0 days, 0 hours, 10 minutes, 33 seconds

I Hope this will be informative for you !

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