09-08-2021 07:26 AM
Simpified schema is like this:
Client_2(100.100.1.2/24)----vlan_98----TenGigE0/0/0/27.98_on_NCS1----MPLS/PW---NCS2_on_Bundle-Ether2.98----vlan_98-----Cleint1(100.100.1.1/24)
Configuration of l2vpn is symmetric on both routers:
NCS1:
interface TenGigE0/0/0/27.98 l2transport
encapsulation dot1q 98 exact
!
l2vpn
xconnect group XCON
p2p 98
interface TenGigE0/0/0/27.98
neighbor ipv4 10.200.200.72 pw-id 98
pw-class MPLS
!
l2vpn
pw-class MPLS
encapsulation mpls
protocol ldp
!NCS2:
interface Bundle-Ether2.98 l2transport
encapsulation dot1q 98 exact
!
l2vpn
xconnect group XCON
p2p 98
interface Bundle-Ether2.98
neighbor ipv4 10.200.200.71 pw-id 98
pw-class MPLS
!
l2vpn
pw-class MPLS
encapsulation mpls
protocol ldp
!PW is in UP state but the traffic (pings) doesn't go through it.
NCS540-1#sh l2vpn xconnect pw-id 98 detail
Wed Sep 8 17:16:27.674 MSK
Group XCONN, XC 98, state is up; Interworking none
AC: TenGigE0/0/0/27.98, state is up
Type VLAN; Num Ranges: 1
Rewrite Tags: []
VLAN ranges: [98, 98]
MTU 9220; XC ID 0x18; interworking none
Statistics:
packets: received 0, sent 0
bytes: received 0, sent 0
drops: illegal VLAN 0, illegal length 0
PW: neighbor 10.200.200.72, PW ID 98, state is up ( established )
PW class MPLS, XC ID 0xc0000002
Encapsulation MPLS, protocol LDP
Source address 10.200.200.71
PW type Ethernet, control word disabled, interworking none
PW backup disable delay 0 sec
Sequencing not set
Ignore MTU mismatch: Disabled
Transmit MTU zero: Disabled
LSP : Up
PW Status TLV in use
MPLS Local Remote
------------ ------------------------------ -----------------------------
Label 24001 24024
Group ID 0x60 0x8004014
Interface TenGigE0/0/0/27.98 Bundle-Ether2.98
MTU 9220 9220
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: 3221225474
Create time: 07/09/2021 16:34:43 (1d00h ago)
Last time status changed: 08/09/2021 17:16:23 (00:00:05 ago)
Last time PW went down: 08/09/2021 16:11:17 (01:05:10 ago)
Statistics:
packets: received 0, sent 0
bytes: received 0, sent 0And If I reconfigure PW to bridge-domain all becоmes fine - clients can ping each other.
Have anyone an idea what can be wrong?
Thaks in advance!
Solved! Go to Solution.
10-07-2021 01:19 AM
The problem was in bug - https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv76274
Ethernet frames are not forwarded to psedo-wire if DST mac-address begins with 4.
The workaround is to add control-word to pw-class on bouth sides of pseudo-wire.
10-07-2021 01:19 AM
The problem was in bug - https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv76274
Ethernet frames are not forwarded to psedo-wire if DST mac-address begins with 4.
The workaround is to add control-word to pw-class on bouth sides of pseudo-wire.
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