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ether3al
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Posts: 42
Joined: Tue Jan 19, 2010 3:23 am

MT & Cisco EoMPLS Config

Fri Nov 02, 2012 7:03 am

Hi All,

We currently have a network running Cisco MPLS core with Mikrotik PE for handing off EoMPLS (VPLS) pseudo wires. At our major POIs I would like to move away from MikroTik to have a Cisco 3750ME or Cisco 6500 as our PE.

I have followed this guide: http://wiki.mikrotik.com/wiki/Manual:EoMPLS_vs_Cisco
whilst testing between a MT 2011 & Cisco 3750-ME however cannot get the tunnel to come up.

Config:

Cisco 3750-ME
pseudowire-class l2vpn
 encapsulation mpls
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.255
!
interface GigabitEthernet1/1/1
 no switchport
 ip address 172.16.1.1 255.255.255.252
 ip ospf network point-to-point
 speed auto 1000
!
interface GigabitEthernet1/1/2
 no switchport
 no ip address
 speed auto 1000
 xconnect 2.2.2.2 173 pw-class l2vpn
!
router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes
 network 1.1.1.1 0.0.0.0 area 0
 network 172.16.1.0 0.0.0.3 area 0
!
!
mpls ldp router-id Loopback0 force
RB2011
/interface bridge add name=lo0
!
/ip address add address=2.2.2.2/32 interface=lo0
/ip address add address=172.16.1.2/30 interface=ether1
!
/routing ospf area add name=Area0 area-id=0.0.0.0 instance=ospf1
/routing ospf instance add name=ospf1 router-id=2.2.2.2 redistribute-connected=as-type-2
/routing ospf interface add interface=ether1 network-type=point-to-point
/routing ospf network add network=2.2.2.2 area=Area0
/routing ospf network add network=172.16.1.0/30 area=Area0
!
/mpls ldp "enabled=yes, lsr-id=2.2.2.2, transport-address=2.2.2.2"
/mpls ldp interface add interface=ether1 disabled=no
!
/interface vpls add name=vpls1 mtu=1500 remote-peer=1.1.1.1 cisco-style=yes cisco-style-id=173 advertised-l2mtu=1500 disabled=no
[admin@MikroTik] > interface vpls monitor 0
remote-label: 19
local-label: 37
remote-status:
transport: 1.1.1.1/32
transport-nexthop: 172.16.1.1
imposed-labels: 19

Switch#sh mpls l2transport vc detail
Local interface: Gi1/1/2 up, line protocol up, Ethernet up
Destination address: 2.2.2.2, VC ID: 173, VC status: down
Output interface: none, imposed label stack {}
Preferred path: not configured
Default path: active
No adjacency
Create time: 00:00:50, last status change time: 00:00:00
Signaling protocol: LDP, peer 2.2.2.2:0 up
MPLS VC labels: local 19, remote 37
Group ID: local 0, remote 0
MTU: local 1500, remote 1500
Remote interface description:
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 0, send 0
byte totals: receive 0, send 0
packet drops: receive 0, send 0
 
samsung172
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Re: MT & Cisco EoMPLS Config

Sat Nov 03, 2012 12:59 am

how about your mtu?
 
ether3al
newbie
Topic Author
Posts: 42
Joined: Tue Jan 19, 2010 3:23 am

Re: MT & Cisco EoMPLS Config

Sat Nov 03, 2012 1:54 am

Currently just 1500, I have tried using 1526 and 1998. When increasing the system MTU on the Cisco 3750 I kept getting an MTU mismatch error which from memory i was able to resolve by changing the MTU setting of the VPLS interface on the MT.

Would have to get the info when I am back in the office.
 
samsung172
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Re: MT & Cisco EoMPLS Config

Sat Nov 03, 2012 8:28 am

Try to have l2mtu to 1600 or higher. Put mpls mtu to ... 1560, and have the vpls mtu at 1500
 
ether3al
newbie
Topic Author
Posts: 42
Joined: Tue Jan 19, 2010 3:23 am

Re: MT & Cisco EoMPLS Config

Mon Nov 12, 2012 5:52 am

Hi,

I believe it is a restriction of the current IOS version I have on the 3750ME switch.

Currently trying to get my hands on the correct version. Will post an update once I make more progress.

Thanks

Ether3al
 
ether3al
newbie
Topic Author
Posts: 42
Joined: Tue Jan 19, 2010 3:23 am

Re: MT & Cisco EoMPLS Config

Fri Nov 16, 2012 4:42 am

I have made some progress, but still not getting a usable link:
20:48:51: %LDP-5-NBRCHG: LDP Neighbor 2.2.2.2:0 (1) is DOWN (TCP connection closed by peer)
20:49:03: %LDP-5-NBRCHG: LDP Neighbor 2.2.2.2:0 (1) is UP
20:49:03: MPLS peer 2.2.2.2 vcid 173, VC UP, VC state UP

Switch#sho xconnect all detail
Legend:    XC ST=Xconnect State  S1=Segment1 State  S2=Segment2 State
  UP=Up       DN=Down            AD=Admin Down      IA=Inactive
  SB=Standby  RV=Recovering      NH=No Hardware

XC ST  Segment 1                         S1 Segment 2                         S2
------+---------------------------------+--+---------------------------------+--
DN     ac   Gi1/1/2(Ethernet)            UP mpls 2.2.2.2:173                  DN
            Interworking: none                   Local VC label 18
                                                 Remote VC label 53
                                                 pw-class:
Switch#show mpls l2transport vc detail
Local interface: Gi1/1/2 up, line protocol up, Ethernet up
  Destination address: 2.2.2.2, VC ID: 173, VC status: down
    Output interface: none, imposed label stack {}
    Preferred path: not configured
    Default path: no route
    No adjacency
  Create time: 00:02:32, last status change time: 00:00:09
  Signaling protocol: LDP, peer 2.2.2.2:0 up
    Targeted Hello: 1.1.1.1(LDP Id) -> 2.2.2.2
    Status TLV support (local/remote)   : enabled/not supported
      Label/status state machine        : activating, LruRruD
      Last local dataplane   status rcvd: DOWN(PW-tx-fault)
      Last local SSS circuit status rcvd: no fault
      Last local SSS circuit status sent: DOWN(PW-rx-fault)
      Last local  LDP TLV    status sent: DOWN(PW-tx-fault)
      Last remote LDP TLV    status rcvd: not sent
    MPLS VC labels: local 18, remote 53
    Group ID: local 0, remote 0
    MTU: local 1598, remote 1598
    Remote interface description:
  Sequencing: receive disabled, send disabled
  VC statistics:
    packet totals: receive 0, send 0
    byte totals:   receive 0, send 0
    packet drops:  receive 0, send 0

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