BVI interface not coming up

[josephd2020]

Hi, I created a BVI interface but its not coming up

RP#show l2vpn bridge-domain detail
Thu Nov 5 02:46:14.610 UTC
Legend: pp = Partially Programmed.
Bridge group: vlans, bridge-domain: vlan100, id: 0, state: up, ShgId: 0, MSTi: 0
Coupled state: disabled
VINE state: BVI Resolved
MAC learning: enabled
MAC withdraw: enabled
MAC withdraw for Access PW: enabled
MAC withdraw sent on: bridge port up
MAC withdraw relaying (access to access): disabled
Flooding:
Broadcast & Multicast: enabled
Unknown unicast: enabled
MAC aging time: 300 s, Type: inactivity
MAC limit: 4000, Action: none, Notification: syslog
MAC limit reached: no, threshold: 75%
MAC port down flush: enabled
MAC Secure: disabled, Logging: disabled
Split Horizon Group: none
Dynamic ARP Inspection: disabled, Logging: disabled
IP Source Guard: disabled, Logging: disabled
DHCPv4 Snooping: disabled
DHCPv4 Snooping profile: none
IGMP Snooping: disabled
IGMP Snooping profile: none
MLD Snooping profile: none
Storm Control: disabled
Bridge MTU: 1500
MIB cvplsConfigIndex: 1
Filter MAC addresses:
P2MP PW: disabled
Create time: 04/11/2020 22:54:59 (03:51:15 ago)
No status change since creation
ACs: 4 (0 up), VFIs: 0, PWs: 0 (0 up), PBBs: 0 (0 up), VNIs: 0 (0 up)
List of ACs:
AC: BVI100, state is down (Segment-down)
Type Routed-Interface
MTU 1514; XC ID 0x80000003; interworking none
Error: Need at least 1 bridge port up
BVI MAC address:
00b8.b36e.980b
Split Horizon Group: Access
AC: Bundle-Ether3, state is unresolved
MAC learning: enabled
Flooding:
Broadcast & Multicast: enabled
Unknown unicast: enabled
MAC aging time: 300 s, Type: inactivity
--More--

here is my L2VPN config

l2vpn
bridge group vlans
bridge-domain vlan100
interface Bundle-Ether3
!
interface TenGigE0/0/2/2
!
interface TenGigE0/0/0/0/1.100
!
routed interface BVI100
!
!
!

!
!

[balaji.bandi]

can you provide more information, what is the device mode / version of code, how your network connected.

AC: Bundle-Ether3, state is unresolved  - Looking at this error we are not able to figure out how this was configured and transport you using.

reference if you like to know more information as example :

https://www.cisco.com/c/en/us/td/docs/iosxr/ncs5000/vpn/60x/b-ncs5000-l2vpn-configuration-guide-60x/b-ncs5000-l2vpn-configuration-guide-60x_chapter_0100.html

[josephd2020]

BE3 is not significant. I just tried adding it, The interface that is important is nterface TenGigE0/0/0/0/1.100, this is not an NCS router, its a ASR9K

I am not sure what this error means 

Error: Need at least 1 bridge port up

I thought as long as TenGige0/0/01.100 is up it should be good?

Thanks

[tkarnani]

did you add l2transport on the configuration of your attachment circuits?

[josephd2020]

I just have this

interface TenGigE0/0/0/1.100 l2transport
encapsulation dot1q 100
rewrite ingress tag pop 1 symmetric

[tkarnani]

is there a typo? in the config you have interface TenGigE0/0/0/0/1.100  << but you provided TenGigE0/0/0/1.100 <<  extra 0 in the bridge domain?

[josephd2020]

Yeah, I got it to work now, so now I can see BVI is up on both my ASK9k and NCS5500 but I am unable to ping the BVI addresses from one box to the other..

Also, how would I test this that vlan100 is being transported on this link?

thanks

[tkarnani]

BVI does not understand vlans. so we will need to ensure that this command is under both physical interfaces "rewrite ingress tag pop 1 symmetric"

i would clear counters on both sides.

perform a ping with timeout 0

then check show interface for each physical interface to ensure we are sending out / receiving.

Thanks

[josephd2020]

Hi Tkarnani,

I can't add that command on the physical interface since it has sub interfaces, I get the error below when I try it.

!!% Subinterface or Layer 2 configuration conflicts with existing configuration, or configuration in this commit: Cannot configure an interface as L2 when it has sub interfaces
!

[tkarnani]

Hi I was talking about the subinterfaces, not the main interfaces.

put "rewrite ingress tag pop 1 symmetric" on both sides

ping, check the counters on each interface to see if the pings are being sent out and received

Thanks

[josephd2020 · Accepted solution]

HI TKarnani,

I have modified my config to the below... Now the Bundle Ethernet and BVI doesnt come up

!

interface Bundle-Ether2
mtu 9216
!
interface Bundle-Ether2.999 l2transport
encapsulation dot1q 100
rewrite ingress tag pop 1 symmetric
!

l2vpn
bridge group 999
bridge-domain BD999
interface Bundle-Ether2
!
routed interface BVI100
!

int Te0/0/0/30
Bundle id 2 mode active

Any ideas? I was expecting BVI and BE2 to come up once I have a member on BE2 (Te0/0/30) but it doesnt seem to work