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Mapping multiple VLANs to EoMPLS tunnel between S6720

Publication Date:  2017-11-22 Views:  470 Downloads:  0
Issue Description

Customer would like to map multiple VLANs on a subinterface to EoMPLS tunnel on a S6720EI switch. Customer setup the topology below involving two S6720EI and a CISCO device working as CPE. Customer cannot ping between devices in VLAN 10 and also between devices on VLAN 20.

Software version is V200R010c00SPC600


BA configuration:

#

mpls ldp remote-peer SE

 remote-ip x.0.0.9

#

vlan 10

 name TEST1

vlan 20

 name TEST2

#

interface LoopBack0

 description ### Routing loopback ###

 ipv6 enable

 ip address x.0.0.1 255.255.255.255

 ipv6 address x::1/128

 ospfv3 100 area 0.0.0.0

 ospf cost 1

 ospf enable 100 area 0.0.0.0

#

interface Vlanif10

 description ### TEST ###

 ip address 10.35.29.1 255.255.255.0

 statistic enable both

#

interface Vlanif20

 description ### TEST ###

 ip address 10.35.28.1 255.255.255.0

 statistic enable both

#

interface XGigabitEthernet0/0/27

 undo portswitch

 description ### SL ###

 mtu 9216

 mpls l2vc x.0.0.9 123456 tagged

#

interface XGigabitEthernet0/0/28

 description ### SL ###

 port link-type trunk

 port trunk allow-pass vlan 10 to 20

#

SE Configuration:

#

mpls ldp remote-peer ba-rs-mil11

 remote-ip x.0.0.1

#

interface LoopBack0

 description ### Routing loopback ###

 ipv6 enable

 ip address x.0.0.9 255.255.255.255

 ipv6 address x::9/128

 ospfv3 100 area 0.0.0.0

 ospf cost 1

 ospf enable 100 area 0.0.0.0

#

#

interface XGigabitEthernet0/0/21

 description ### SM ###

 port link-type trunk

 port trunk allow-pass vlan 2

#

interface XGigabitEthernet0/0/21.3700

 description ### TEST ###

 mtu 9216

 dot1q termination vid 10 to 20

 mpls l2vc x.0.0.1 123456

#

CPE Configuration:

vlan 10

 name test

!

vlan 20

name test2

!

Interface Vlan10

description ### TEST ###

ip address 10.35.29.2 255.255.255.0

!

Interface Vlan20

description ### TEST ###ip address 10.35.28.2 255.255.255.0

!

Interface GigabitEthernet0/1

description ### Link to SE ##

switchport trunk encapsulation dot1q

switchport trunk allowed 2,10,20

switchport mode trunk

switchport non-negociate

load-interval 30

Solution

There is a chip limitation on this equipment that makes the egress switch (BA) not being able to have both physical interfaces (end and start of the mpls l2vc tunnel of the trunk for the mapped VLANs 10 and 20).

For example interface below is a main interface.

#

interface XGigabitEthernet0/0/45

 undo portswitch

 description ### Smer ba-rs-tp01, [NNI_L3] ###

 mtu 1998

 ip address 87.244.238.193 255.255.255.252

 pim sm

 pim bfd enable

 ospf cost 50000

 ospf mtu-enable

 ospf network-type p2p

 ospf timer hello 1

 ospf timer dead 30

 ospf enable 100 area 0.0.0.0

 mpls

 mpls mtu 9216

 mpls te

 mpls rsvp-te

 mpls ldp

 jumboframe enable 12288

#


To overcome this limitation, customer needs to configure the end of the mpls l2vc tunnel as a VLAN interface instead of a physical interface.

END