Validation
To validate the proper configuration of Link Loss Forwarding (LLF), use the show running-config interface xe22.2 command to inspect the interface settings. Ensure that the interface is configured with switchport, encapsulation dot1q 10 for VLAN tagging, access-if-evpn to enable EVPN on the interface, llf-enable to activate LLF, and map vpn-id 10 to associate the service with the correct VPN ID. Verify that these attributes are present and correctly configured. If discrepancies are found, update the configuration and recheck to ensure the LLF setup is correct and operational.
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#show running-config interface xe22.2
interface xe22.2 switchport
encapsulation dot1q 10
access-if-evpn
llf-enable
map vpn-id 10
!
Rvtep#sh evpn mpls llf-status
status : is_up\is_running
ifp-name sub-Ifname llf-configured RT-1-rcvd llf-action
______________________________________________________________________________
xe16 (DOWN\---) xe16.2 (UP\---) YES NO YES
Total number of entries are 1
Rvtep#sh int brief
xe16.2 SUBINTERFACE -- -- down PD 10g -- No No
Rvtep#sh int xe16
Interface xe16
Flexport: Non Control Port (Active)
Hardware is ETH Current HW addr: e8c5.7a8f.c60e
Physical:e8c5.7a8f.c60e Logical:(not set)
Forward Error Correction (FEC) configured is Auto (default)
FEC status is N/A
Port Mode is Router
Protected Mode is Promiscuous
Interface index: 10037
GMPLS index: 39
Metric 1 mtu 1500 duplex-full link-speed 10g
Debounce timer: disable
ARP ageing timeout 1500
<BROADCAST,MULTICAST>
Reason: LLF DOWN
VRF Binding: Not bound
Label switching is disabled
No Virtual Circuit configured
Administrative Group(s): None
Regular Extended-Admin-Group(s): None
Anomaly Extended-Admin-Group(s): None
Bandwidth 10g
Maximum reservable bandwidth 10g
Available b/w at priority 0 is 10g
Available b/w at priority 1 is 10g
Available b/w at priority 2 is 10g
Available b/w at priority 3 is 10g
Available b/w at priority 4 is 10g
Available b/w at priority 5 is 10g
Available b/w at priority 6 is 10g
Available b/w at priority 7 is 10g
DHCP client is disabled.
Last Flapped: 2024 Oct 25 21:46:12 (00:00:44 ago)
Load Interval: 30 seconds.
Statistics last cleared: Never
inet6 fe80::eac5:7aff:fe8f:c60e/64
ND router advertisements are sent approximately every 442 seconds
ND next router advertisement due in 0 seconds.
ND router advertisements live for 1800 seconds
Hosts use stateless autoconfig for addresses.
RX
unicast packets 0 multicast packets 0 broadcast packets 0
input packets 0 bytes 0
jumbo packets 0
undersize 0 oversize 0 CRC 0 fragments 0 jabbers 0
input error 0
input with dribble 0 input discard 0
Rx pause 0
TX
unicast packets 0 multicast packets 10 broadcast packets 0
output packets 10 bytes 1020
jumbo packets 0
output errors 0 collision 0 deferred 0 late collision 0
output discard 0
Tx pause 0
Rvtep#