MPLS L2VPN, tunneling routing protocols

mrboogieman · ‎11-25-2013

Hello could somebody help me here ? .. I´m trying to figure out if there is any way to connect a CE --- PE1 --- L2VPN --- PE2 , the CE is going to be configured using eigrp or ospf and then the PE2 recieve the CE connection as if the CE is directly connected through a Vlan and a dot1q subint. I was trying to use a BVI and then attach this bvi to a L2VPN , but at the same time i don´t know what kind of "xconnect" i should use to connect to the PE1 how could I handle the PW transport-mode since the bvi encap is ARPA, should i use a l2transport on the PE then bind it to the bvi then create a bridge group under the lsvpn conf and then do the xconnect .. I´m a little confused

The picture shows kind of the thing that i would like to do. The main idea is to set this Pseudowire across the mpls and on PE2 (ASR9000), have ths l2interface that is used to do the PW but at the same time I would need a routing interface (vrf aware) attached to the same domain as the l2interface in order to allow CE to have IP conectivity with ASR9000, thus allwing eigrp to work.

Sandip Rathod · ‎11-25-2013

Hi Fabian

This blog might answer your question

https://supportforums.cisco.com/docs/DOC-15556

Let me know if need further clarification

Regards,

Sandip

mrboogieman · ‎11-28-2013

Hey Sandip

Thanks for your answer, sorry for the delay. Well I saw that information before and was actually trying to do something with evc, specifically bvi interfaces since I read that you could create a bridge group then include a l2 and l3 interface.

Regarding the problem I posted before, I´ve been working on two different aproaches to face the problem; evc (using bvi and l2transport interface) and Pseudowire Headend. Finnally I tried both and the one I was looking for was the bridge group with irb and xconnect to the first PE. My configuration looks something like this (on PE ASR900)

!

bridge group group1

bridge-domain bdomain1

mtu 1560

interface Bundle-Ether1.66

!

neighbor 3.3.3.30 pw-id 1234567890

!

routed interface BVI65

!

And the satus of the tunnel looks like this

RP/0/RSP0/CPU0:PE5-BNG-ASR9K#show l2vpn bridge-domain detail
Thu Nov 28 18:11:07.335 UTC
Legend: pp = Partially Programmed.
Bridge group: group1, bridge-domain: bdomain1, id: 0, state: up, ShgId: 0, MSTi: 0
Coupled state: disabled
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
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
IGMP Snooping profile: none
MLD Snooping profile: none
Storm Control: disabled
Bridge MTU: 1560
MIB cvplsConfigIndex: 1
Filter MAC addresses:
Create time: 21/11/2013 17:54:45 (1w0d ago)
No status change since creation
ACs: 2 (1 up), VFIs: 0, PWs: 1 (1 up), PBBs: 0 (0 up)
List of ACs:
AC: BVI65, state is up
Type Routed-Interface
MTU 1574; XC ID 0x80000005; interworking none
BVI MAC address:
c062.6bb3.684d
AC: Bundle-Ether1.66, state is unresolved
MAC learning: enabled
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
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
IGMP Snooping profile: none
MLD Snooping profile: none
Storm Control: disabled
Static MAC addresses:
List of Access PWs:
PW: neighbor 3.3.3.30, PW ID 1234567890, state is up ( established )
PW class not set, XC ID 0xc0000008
Encapsulation MPLS, protocol LDP
Source address 5.5.5.5
PW type Ethernet, control word disabled, interworking none
PW backup disable delay 0 sec
Sequencing not set

MPLS         Local                          Remote
------------ ------------------------------ ---------------------------
Label        16029                          4669
Group ID     0x0                            0x0
Interface    Access PW                      unknown
MTU          1560                           1560
Control word disabled                       disabled
PW type      Ethernet                       Ethernet
VCCV CV type 0x2                            0xa
(LSP ping verification)        (LSP ping verification)
(BFD PW FD/AC status)
VCCV CC type 0x6                            0x6
(router alert label)           (router alert label)
(TTL expiry)                   (TTL expiry)
------------ ------------------------------ ---------------------------
MIB cpwVcIndex: 3221225480
Create time: 28/11/2013 14:08:39 (04:02:27 ago)
Last time status changed: 28/11/2013 14:08:39 (04:02:27 ago)
MAC withdraw messages: sent 0, received 0
Static MAC addresses:
Statistics:
packets: received 275, sent 32
bytes: received 18120, sent 67684
Storm control drop counters:
packets: broadcast 0, multicast 0, unknown unicast 0
bytes: broadcast 0, multicast 0, unknown unicast 0
MAC learning: enabled
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
MAC port down flush: enabled
MAC Secure: disabled, Logging: disabled
Split Horizon Group: none
DHCPv4 snooping: disabled
IGMP Snooping profile: none
MLD Snooping profile: none
Storm Control: disabled

I´m going to use this solution because is the one that can support our requeriments, Pseudowire Headend work fine, really easy, but the problem is that today with IOS XR 4.3.0 the pw-eth doesn´t dynamic routing protocols like eigrp, ospf, etc... just plain L3 routing.

Thanks for your support

Fabian