Hi,
we are at our wits end with an mpls based pseudowire we are trying to setup
between a 6504/Sup720 and a 6509/Sup2T.
Both switches are setup as Vss clusters.
We have a trunk port on both ends with vlan 21 being the specific vlan we want
to pass over the xconnect.
Vlan 21 is specifically not in the vlan database because of the limitations of
the sup720/pfc3 based platform without special wan line cards.
Mpls Layr3 vpns are working fine between the two boxes so we assume that our
mpls setup is ok.
We have configured following (first two octets of the ips replaced to 192.168):
6509-sup2t
----------
interface Port-channel7
switchport
switchport trunk allowed vlan 21,40-49,100,3000-3499
switchport mode trunk
!
interface Port-channel7.21
encapsulation dot1Q 21
xconnect 192.168.80.6 21 encapsulation mpls
!
6504-sup720
-----------
interface GigabitEthernet2/2/6
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 21,50,2000,2040,2041
switchport mode trunk
spanning-tree portfast edge trunk
!
interface GigabitEthernet2/2/6.21
encapsulation dot1Q 21
xconnect 192.168.80.5 21 encapsulation mpls
!
We do see the xconnect coming up on both sides:
6509-sup2t#show xconnect 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 Po7.21:21(Eth VLAN) UP mpls 192.168.80.6:21
UP
6504-sup720#show xconnect 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 ac Gi2/2/6.21:21(Eth VLAN) UP mpls 192.168.80.5:21
UP
Looking at "show mpls l2transport vc 21 detail" we see packets going in and out
on the sup720 but no received packets on the sup2t side.
We are also missing the "LDP is UP" part on the sup2t but we are puzzled as to
why the xconnect might come up.
6509-sup2t#show mpls l2transport vc 21 detail
Local interface: Po7.21 up, line protocol up, Eth VLAN 21 up
Interworking type is Ethernet
Destination address: 192.168.80.6, VC ID: 21, VC status: up
Output interface: Vl50, imposed label stack {44}
Preferred path: not configured
Default path: active
Next hop: 192.168.81.6
Create time: 1d02h, last status change time: 1d02h
Signaling protocol: LDP, peer 192.168.80.6:0 up
Targeted Hello: 192.168.80.5(LDP Id) -> 192.168.80.6
Status TLV support (local/remote) : enabled/not supported
Label/status state machine : established, LruRru
Last local dataplane status rcvd: no fault
Last local SSS circuit status rcvd: no fault
Last local SSS circuit status sent: no fault
Last local LDP TLV status sent: no fault
Last remote LDP TLV status rcvd: not sent
MPLS VC labels: local 49, remote 44
Group ID: local 0, remote 0
MTU: local 1500, remote 1500
Remote interface description: Vpls zu cr01
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 0, send 145832
byte totals: receive 0, send 10532878
packet drops: receive 0, send 0
6504-sup720#show mpls l2transport vc 21 detail
Local interface: Gi2/2/6.21 up, line protocol up, Eth VLAN 21 up
Interworking type is Ethernet
Destination address: 192.168.80.5, VC ID: 21, VC status: up
Output interface: Vl50, imposed label stack {49}
Preferred path: not configured
Default path: active
Next hop: 192.168.81.5
Load Balance: none
Flow Label: Disabled
Create time: 1d02h, last status change time: 1d02h
Signaling protocol: LDP, peer 192.168.80.5:0 up
Targeted Hello: 192.168.80.6(LDP Id) -> 192.168.80.5, LDP is UP
Status TLV support (local/remote) : enabled/not supported
LDP route watch : enabled
Label/status state machine : established, LruRru
Last local dataplane status rcvd: No fault
Last local SSS circuit status rcvd: No fault
Last local SSS circuit status sent: No fault
Last local LDP TLV status sent: No fault
Last remote LDP TLV status rcvd: Not sent
Last remote LDP ADJ status rcvd: No fault
MPLS VC labels: local 44, remote 49
Group ID: local 0, remote 0
MTU: local 1500, remote 1500
Remote interface description:
Sequencing: receive disabled, send disabled
Control Word: On (configured: autosense)
VC statistics:
transit packet totals: receive 97473, send 90961
transit byte totals: receive 7047328, send 6185360
transit packet drops: receive 0, send 0
I am 50/50 split that this is an issue either in the mpls forwarding or
something magic on the sup2t platform that we need to enable.
Also not sure if this might be related to using a port-channel on the sup2t
side.
Any tips on what we might try next or what to look for in specific ?
Greetings
Christian Kratzer
CK Software GmbH
--
Christian Kratzer CK Software GmbH
Email: [email protected] Wildberger Weg 24/2
Phone: +49 7032 893 997 - 0 D-71126 Gaeufelden
Fax: +49 7032 893 997 - 9 HRB 245288, Amtsgericht Stuttgart
Web: http://www.cksoft.de/ Geschaeftsfuehrer: Christian Kratzer
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