[c-nsp] MPLS routed pseudowire between ASR9k and 7600 with LAN cards

[Aivars]

Just a little additional information.

Debug on 7600 shows:

XCL2 Failed to find session for peer 192.168.0.2, vcid 555

ASR is running 4.3.0 and 7600 122-33.SRE7a.

So far I have not succeeded to bring up a working remote L2VPN session
on ASR (also without L3 interface). Even if it shows up at both ends, it does not mean that it is
working.


 Aivars

> Hi,

>  

> There is a need to extend L2 connections from an existing 7600 with
> LAN cards to a new ASR9001 and configure IP address on that connection.

>  

> If we look for link redundancy and rule out conventional switching and
> spanning tree, to my understanding this looks something like "Pseudowire Headend".

>  

>  

> ASR9k:

> l2vpn

> xconnect group test

> p2p test

> interface PW-Ether555

>  neighbor 192.168.0.1 pw-id 555

>  

> interface PW-Ether555

> mtu 9216

> vrf MGMT

> ipv4 address 172.30.2.1 255.255.255.252

> attach generic-interface-list test

>  

> generic-interface-list test

> interface Bundle-Ether1

> interface TenGigE0/0/0/1

>  

> 7600:

> interface TenGigabitEthernet3/4.555

> encapsulation dot1Q 555

>  xconnect 192.168.0.2 555 encapsulation mpls

> mtu 9202

>  

> The problem here is that ASR thinks that everything is fine:

>  

> Group test, XC test, state is up; Interworking none

> AC: PW-Ether555, state is up

> Type PW-Ether

> Interface-list: test

> Replicate status:

> Te0/0/0/1: success

> BE1: success

> MTU 9202; interworking none

> Internal label: 16020

> Statistics:

> packets: received 0, sent 60

> bytes: received 0, sent 2532

> PW: neighbor 

> 192.168.0.1 

> , PW ID 555, state is up ( established )

> PW class not set, XC ID 0xc0000001

> Encapsulation MPLS, protocol LDP

> Source address 172.30.0.2

> PW type Ethernet, control word disabled, interworking none

> PW backup disable delay 0 sec

> Sequencing not set

>  

> PW Status TLV in use

> MPLS Local Remote 

> ------------ ------------------------------ -----------------------------

> Label 16021 45 

> Group ID 0x160 0x0 

> Interface PW-Ether555 unknown 

> MTU 9202 9202 

> Control word disabled disabled 

> PW type Ethernet Ethernet 

> VCCV CV type 0x2 0x2 

> (LSP ping verification) (LSP ping verification) 

> VCCV CC type 0x6 0x6 

> (router alert label) (router alert label) 

> (TTL expiry) (TTL expiry) 

> ------------ ------------------------------ -----------------------------

> Incoming Status (PW Status TLV):

> Status code: 0x0 (Up) in Notification message

> Outgoing Status (PW Status TLV):

> Status code: 0x0 (Up) in Notification message

> MIB cpwVcIndex: 3221225473

> Create time: 19/02/2013 08:51:23 (07:59:29 ago)

> Last time status changed: 19/02/2013 16:50:00 (00:00:52 ago)

> Last time PW went down: 19/02/2013 09:05:10 (07:45:42 ago)

> Statistics:

> packets: received 0, sent 60

> bytes: received 0, sent 2532

>  

> However at the same time 7600 is unhappy:

>  

> BIP-STO1#sh xconnect int te3/4.555 detail 

> Legend: XC ST=Xconnect State S1=Segment1 State S2=Segment2 State

> UP=Up DN=Down AD=Admin Down IA=Inactive

> SB=Standby HS=Hot Standby RV=Recovering NH=No Hardware

>  

> XC ST Segment 1 S1 Segment 2 S2

> ------+---------------------------------+--+---------------------------------+--

> DN ac Te3/4.555:555(Eth VLAN) UP mpls 192.168.0.2:555 DN

> Interworking: ethernet Local VC label 45 

> Remote VC label 16021

>  

> What am I missing here? Is this even the right approach to reach the goal?

>  

> I succeeded in a similar task where there was HP 5800 at the other
> end of L2 circuit. I used bridge domain, VPLS and BVI interface in that case. Unfortunately
> VPLS is not an option for 7600 with LAN cards.  

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