[c-nsp] ASR 901 MPLS issues

[Jerry Bacon]

I _am_ doing a service instance on the ASR, but not on the 6500 (it 
doesn't support them - SUP720).

-- 

Jerry Bacon
Senior Network Engineer
StarTouch, Inc.
http://www.startouch.com
360-543-5679 ext. 111
Microwave - Fiber Optics - Internet Services

On 1/25/2018 2:17 PM, Bryan Tabb wrote:
> On our asr920's we use service instances to match the specific vlans.  Can't recall exact reason but there was something with ge0/1.subinterface not behaving the same as the asr1ks.
>
> E.g.
>
> interface GigabitEthernet0/0/0
> !
>   service instance 49 ethernet
>     encapsulation dot1q 2
>    xconnect 10.0.0.1 49 encapsulation mpls pw-class pw-l2vpn-encap-mpls
>     mtu 1550
>   !
>
> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jerry Bacon
>
> I'm trying to get an ASR 901 (IOS 15.4(2)S1) to do simple EoMPLS with a
> 6500 (IOS 15.1(2)SY).
>
> A port level xconnect works just fine. However, when I try to do a VLAN xconnect, I only get traffic (actually just MACs) in one direction, from the ASR to the 6500. It doesn't appear that I get anything back at all, even though the xconnect comes up and all looks normal there. Any ideas?
>
> 6500
>
> interface GigabitEthernet2/1
>    description to switch 2 (handoff)
>    switchport
>    switchport trunk encapsulation dot1q
>    switchport trunk allowed vlan none
>    switchport mode trunk
>    switchport nonegotiate
>    mtu 9216
>
> interface GigabitEthernet2/1.100
>    description vlan100
>    encapsulation dot1Q 100
>    xconnect 10.100.102.1 100 encapsulation mpls
>
> new_switch#sh xcon all
> 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
> ------+---------------------------------+--+---------------------------------+--
> UP     ac   Gi2/1.100:100(Eth VLAN)      UP mpls
> 10.100.102.1:100             UP
>
> ASR 901
>
> interface GigabitEthernet0/0
>    description trunk in
>    no ip address
>    negotiation auto
>    cdp enable
>    service instance 1 ethernet
>     description test1
>     encapsulation dot1q 100
>     xconnect 10.100.101.1 100 encapsulation mpls
>      mtu 9216
>
> new_router#sh xcon all
> 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
> ------+---------------------------------+--+---------------------------------+--
> UP pri   ac Gi0/0:100(Eth VLAN)          UP mpls
> 10.100.101.1:100             UP
>