[c-nsp] ASR901 to ME3600X xconnect

Aaron aaron1 at gvtc.com
Fri Mar 1 00:00:17 EST 2013


Looks like the attachment circuit is down on the me3600 (int g0/11 not up up
?).  That will cause the pw to not come up as I recall

Aaron



-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Pshem Kowalczyk
Sent: Thursday, February 28, 2013 3:35 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] ASR901 to ME3600X xconnect

Hi,

I'm testing an asr901. We're looking at using for l2vpn termination.
For some reason the xconnect refuses to stand up between asr901 and me3600x.
Similar setup between two 3600x works fine.

Relevant config on the asr901:

!
hostname asr901A
!

boot system flash:/asr901-universalk9-mz.152-2.SNH1.bin



mpls label protocol ldp
mpls ldp discovery targeted-hello accept mpls traffic-eng tunnels
bridge-domain 2

l2 router-id 10.123.129.3
!
interface Loopback0
 ip address 10.123.129.3 255.255.255.255 !
interface Tunnel3000
 ip unnumbered Loopback0
 mpls ip
 tunnel mode mpls traffic-eng
 tunnel destination 10.123.129.1
 tunnel mpls traffic-eng autoroute announce  tunnel mpls traffic-eng
path-option 1 dynamic  tunnel mpls traffic-eng record-route  tunnel mpls
traffic-eng fast-reroute !
interface GigabitEthernet0/0
 duplex full
 no negotiation auto
 service instance 1 ethernet
  encapsulation dot1q 17
  rewrite ingress tag pop 1 symmetric
  xconnect 10.123.29.1 4321 encapsulation mpls
   mtu 1500
 !
!
interface Vlan2
 mtu 9216
 description to me3600x
 ip address 10.123.29.6 255.255.255.252
 ip router isis vc-core
 mpls traffic-eng tunnels
 clns mtu 9083
 isis network point-to-point
 isis metric 10
!
router isis vc-core
 net 49.0001.0101.2312.9003.00
 is-type level-2-only
 ispf level-2
 metric-style wide
 set-overload-bit on-startup wait-for-bgp  spf-interval 5 50 200
prc-interval 5 50 200  lsp-gen-interval 5 50 200  log-adjacency-changes
passive-interface default  no passive-interface Vlan2  mpls traffic-eng
router-id Loopback0  mpls traffic-eng level-2


on the ME3600X the xconnect looks like this:

interface GigabitEthernet0/11
 description not in use
 switchport trunk allowed vlan none
 switchport mode trunk
 mtu 9100
 service-policy output PM-INT-1G-OUT
 service instance 17 ethernet
  encapsulation dot1q 4094
  rewrite ingress tag pop 1 symmetric
  xconnect 10.123.29.3 4321 encapsulation mpls
   mtu 1500

I can see the ISIS and LDP up between asr901 and me3600x:

asr901A#sh mpls ldp neighbor
    Peer LDP Ident: 10.123.129.1:0; Local LDP Ident 10.123.129.3:0
        TCP connection: 10.123.129.1.646 - 10.123.129.3.26629
        State: Oper; Msgs sent/rcvd: 1207/1201; Downstream
        Up time: 17:22:15
        LDP discovery sources:
          Targeted Hello 10.123.129.3 -> 10.123.129.1, active, passive
          Targeted Hello 10.123.129.3 -> 10.123.29.1, active
        Addresses bound to peer LDP Ident:
          10.123.129.1    10.123.29.5     10.123.29.1

asr901A#sh isis neighbors

Tag vc-core:
System Id      Type Interface   IP Address      State Holdtime Circuit Id
accr01cgr      L2   Vl2         10.123.29.5     UP    24       01


Yet the actual vc doesn't come up:

asr901A#sh mpls l2transport vc detail
Local interface: Gi0/0 up, line protocol up, Eth VLAN 17 up
  Destination address: 10.123.29.1, VC ID: 4321, VC status: down
    Last error: Local peer access circuit is down
    Output interface: none, imposed label stack {}
    Preferred path: not configured
    Default path: no route
    No adjacency
  Create time: 00:17:34, last status change time: 00:13:54
  Signaling protocol: LDP, peer 10.123.129.1:0 up
    Targeted Hello: 10.123.129.3(LDP Id) -> 10.123.29.1, LDP is DOWN, no
binding
    Status TLV support (local/remote)   : enabled/None (no remote binding)
      LDP route watch                   : disabled
      Label/status state machine        : local ready, LruRnd
      Last local dataplane   status rcvd: No fault
      Last BFD dataplane     status rcvd: Not sent
      Last BFD peer monitor  status rcvd: No fault
      Last local AC  circuit status rcvd: No fault
      Last local AC  circuit status sent: Not sent
      Last local LDP TLV     status sent: No fault
      Last remote LDP TLV    status rcvd: None (no remote binding)
      Last remote LDP ADJ    status rcvd: None (no remote binding)
    MPLS VC labels: local 16, remote unassigned
    Group ID: local 0, remote unknown
    MTU: local 1500, remote unknown
    Remote interface description:
  Sequencing: receive disabled, send disabled
  Control Word: On (configured: autosense)
  Dataplane:
    SSM segment/switch IDs: 0/0 (used), PWID: 2
  VC statistics:
    transit packet totals: receive 0, send 0
    transit byte totals:   receive 0, send 0
    transit packet drops:  receive 0, seq error 0, send 0

The error 'Local peer access circuit is down' is all I get on the 901, on
the me3600x I get:
accr01cgr#sh mpls l2transport vc 4321 detail Local interface: Gi0/11 up,
line protocol up, Eth VLAN 4094 down
  Destination address: 10.123.29.3, VC ID: 4321, VC status: down
    Last error: Local peer access circuit is down
    Output interface: none, imposed label stack {}
    Preferred path: not configured
    Default path: no route
    No adjacency
  Create time: 17:49:18, last status change time: 1w3d
    Last label FSM state change time: 17:06:57
  Signaling protocol: LDP, peer unknown
    Targeted Hello: 10.123.129.1(LDP Id) -> 10.123.29.3, LDP is DOWN, no
binding
    Status TLV support (local/remote)   : enabled/None (no remote binding)
      LDP route watch                   : enabled
      Label/status state machine        : local standby, AC-ready, LnuRnd
      Last local dataplane   status rcvd: No fault
      Last BFD dataplane     status rcvd: Not sent
      Last BFD peer monitor  status rcvd: No fault
      Last local AC  circuit status rcvd: No fault
      Last local AC  circuit status sent: Not sent
      Last local PW i/f circ status rcvd: No fault
      Last local LDP TLV     status sent: No status
      Last remote LDP TLV    status rcvd: None (no remote binding)
      Last remote LDP ADJ    status rcvd: None (no remote binding)
    MPLS VC labels: local 21, remote unassigned
    Group ID: local 0, remote unknown
    MTU: local 1500, remote unknown
    Remote interface description:
  Sequencing: receive disabled, send disabled
  Control Word: On (configured: autosense)
  Dataplane:
    SSM segment/switch IDs: 0/0 (used), PWID: 6
  VC statistics:
    transit packet totals: receive 0, send 0
    transit byte totals:   receive 0, send 0
    transit packet drops:  receive 0, seq error 0, send 0

Ethernet VLAN is down and the same error message 'Local peer access circuit
is down'  shows up.

Debug on the ASR901 reveals the following:
*Mar  1 04:02:29.779: AToM[10.123.29.1, 4321]: Receive status update *Mar  1
04:02:29.779: AToM[10.123.29.1, 4321]: . Receive AC STATUS(DOWN AC(rx/tx
faults)) *Mar  1 04:02:29.779: AToM[10.123.29.1, 4321]: .. AC status DOWN
AC(rx/tx faults) *Mar  1 04:02:29.779: AToM[10.123.29.1, 4321]: ... Local
peer access circuit is down *Mar  1 04:02:29.779: AToM[10.123.29.1, 4321]:
.... S:Evt local down in LndRnd *Mar  1 04:02:29.779: AToM[10.123.29.1,
4321]: ..... NMS: VC oper state:  DOWN
*Mar  1 04:02:29.783: AToM[10.123.29.1, 4321]: ..... NMS:     err
codes:    loc-ac-rx-err
*Mar  1 04:02:29.783: AToM[10.123.29.1, 4321]: ..... NMS:
:  + loc-ac-tx-err
*Mar  1 04:02:29.783: AToM[10.123.29.1, 4321]: ..... SYSLOG: VC is DOWN, Loc
AC Err *Mar  1 04:02:29.783: AToM[10.123.29.1, 4321]: ... Local ready *Mar
1 04:02:29.783: AToM[10.123.29.1, 4321]: ... Local service is ready; send a
label

I have no idea why I get those errors on the AC.
Any hints will be greatly appreciated.

kind regards
Pshem
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