You can configure software Bidirectional Forwarding Detection (BFD) sessions on the Cluster Edge Port (CEP) on SLX 9150 and SLX 9250 platforms. EPG : Port Property shows the attribute bfd-software-session, using which you can choose a software or hardware BFD session.
Transition between software and hardware based BFD is not supported. Therefore, during session formation with SRIOV, BFD does not come up during link failover.
Note
interface Ethernet 0/1 cluster-track bfd-software-session switchport switchport mode trunk switchport trunk allowed vlan add 11 no switchport trunk tag native vlan no shutdown ! |
interface Port-channel 1 cluster-track bfd-software-session switchport switchport mode trunk switchport trunk allowed vlan add 11 no switchport trunk tag native vlan no shutdown ! |
EFA automates the cep-bfd-session-type on the CEP interfaces based on the logic, with no additional input from the users.
| SLX Hardware Type | EFA: Fabric Links (Leaf to Spine) | EFA: Extension EPG | EFA: L3-Handoff EPG | |
|---|---|---|---|---|
| CEP SRIOV | CEP Non-SRIOV | CEP | ||
| SLX 9250 | Hardware | Software | Software | Hardware |
| SLX 8720 | Hardware | Software | Software | Hardware |
| SLX 9740 and other SLX versions | Hardware | Hardware | Hardware | Hardware |
(efa:root)root-2:-# efa fabric show
Fabric Name: default, Fabric Description: Default Fabric, Fabric Stage: 3, Fabric Type: clos, Fabric Status: created
+------------+-----+-----------+-----+------+--------------+-----------+-------------------+-----------------+---------+-------+
| IP ADDRESS | POD | HOST NAME | ASN | ROLE | DEVICE STATE | APP STATE | CONFIG GEN REASON | PENDING CONFIGS | VTLB ID | LB ID |
+------------+-----+-----------+-----+------+--------------+-----------+-------------------+-----------------+---------+-------+
Fabric Name: fs, Fabric Description: , Fabric Stage: 3, Fabric Type: clos, Fabric Status: settings-updated
Updated Fabric Settings: BGP-LL
+-------------+-----+-----------+-------+-------+---------------------+-------------+------------+---------------+---------+-------+
| IP ADDRESS | POD | HOST NAME | ASN | ROLE | DEVICE STATE | APP STATE | CONFIG GEN | PENDING | VTLB ID | LB ID |
| REASON | CONFIGS |
+-------------+-----+-----------+-------+-------+---------------------+-------------+------------+---------------+---------+-------+
| 10.20.246.1 | | SLX-1 | 64512 | Spine | provisioned | cfg in-sync | NA | NA | NA | 1 |
| 10.20.246.7 | | SLX | 65000 | Leaf | provisioning failed | cfg ready | IA,IU,MD,DA| SYSP-C,MCT-C | | |
| | | | | | | | | MCT-PA,BGP-C | | |
| | | | | | | | | INTIP-C,EVPN-C| | |
| | | | | | | | | O-C | 2 | 1 |
| 10.20.246.8 | | slx-8 | 65000 | Leaf | provisioned | cfg in-sync | NA | NA | 2 | 1 |
+-------------+-----+-----------+-------+-------+---------------------+-------------+------------+---------------+---------+-------+
FABRIC SETTING:
BGPLL - BGP Dynamic Peer Listen Limit, BGP-MD5 - BGP MD5 Password , BFD-RX - Bfd Rx Timer, BFD-TX - Bfd Tx Timer, BFD-MULTIPLIER - Bfd multiplier,
BFD-ENABLE - Enable Bfd, BGP-MULTIHOP - BGP ebgp multihop, P2PLR - Point-to-Point Link Range, MCTLR - MCT Link Range, LOIP - Loopback IP Range
CONFIG GEN REASON:
LA/LD - Link Add/Delete, IA/ID/IU - Interface Add/Delete/Update, PLC/PLD/PLU - IPPrefixList Create/Delete/Update
MD/MU - MCT Delete/Update, OD/OU - Overlay Gateway Delete/Update, EU/ED - Evpn Delete/Update, PC/PD/PU - RouterPim Create/Delete/Update
DD - Dependent Device Update, DA/DR - Device Add/ReAdd, ASN - Asn Update, SYS - System Properties Update
MD5 - BGP MD5 Password, BGPU - Router BGP Update, BGPLL - BGP Listen Limit, POU - Port Channel Update, NA - Not Applicable
PENDING CONFIGS:
MCT - MCT Cluster, O - Overlay Gateway, SYSP - System Properties, INTIP - Interface IP, BGP - Router BGP
C/D/U - Create/Delete/Update, PA/PD - Port Add/Port Delete
(efa:root)root-2:-# efa tenant show +------+---------+------------+-------------+-------------+-----------+------------+----------------------+ | Name | Type | VLAN Range | L2VNI Range | L3VNI Range | VRF Count | Enable BD | Ports | +------+---------+------------+-------------+-------------+-----------+------------+----------------------+ | ten1 | Private | 11-20 | | | 10 | false | 10.20.246.6[0/1-10]| | | | | | | | | | 10.20.246.5[0/1-10]| | +------+---------+------------+-------------+-------------+-----------+------------+----------------------+ efa tenant vrf create --name ten1vrf1 --tenant ten1
EPG Create
Run the following command to create a cep-bfd-session-type automation on EPG port property:
efa tenant epg create --name ten1epg1 --tenant ten1
--port 10.20.246.5[0/1],10.20.246.6[0/1]
--switchport-mode trunk
--vrf ten1vrf1 --ctag-range 11
--anycast-ip 11:20.0.11.1/24
--local-ip 11,10.20.246.5:10.1.1.1/24 --local-ip 11,10.20.246.6:10.1.1.2/24
Example
(efa:root)root@node-2:-# efa tenant epg show --detail
===============================================================
Name : ten1epg1
Tenant : ten1
Type : extension
State :
Description :
Ports : 10.20.246.5[0/1]
: 10.20.246.6[0/1]
POs :
Port Property : SwithchPort Mode : trunk
: Native Vlan Tagging : false
: BFD Session Type : Auto
NW Policy : Ctag Range : 11
: VRF : ten1vrf1
: L3Vni : 8192
+------+---------------+-------+---------+--------------+--------------+--------------------------+---------+----------------+--------------+-------------+-------------+
| Ctag | Ctag | L2Vni | BD Name | Anycast IPv4 | Anycast IPv6 | Local IP | IPv6 ND | IPv6 ND | IPv6 ND | Dev State | App State |
| | Description | | | | | [Device-IP->Local-IP] | Mtu | Managed Config | Other Config | | |
+------+---------------+-------+---------+--------------+--------------+--------------------------+---------+----------------+--------------+-------------+-------------+
| 11 | Tenant L3 | 11 | | 20/0.11.1/24 | | 10.20.246.5->10.1.1.1/24 | | false | false | provisioned | cfg-in-sync |
| | Extended VLAN | | | | | 10.20.246.6->10.1.1.1/24 | | | | | |
+------+---------------+-------+---------+--------------+--------------+--------------------------+---------+----------------+--------------+-------------+-------------+
Network Property [Flags : * - Native Vlan]
+------+----------------+--------------+----------------+--------------------+-------------+
| CTAG | IPv6 ND Prefix | No Advertise | Valid Lifetime | Preferred Lifetime | Config Type |
+------+----------------+--------------+----------------+--------------------+-------------+
IPv6 ND Prefix Flags
For 'unstable' entities, run 'efa tenant po/vrf show' for details
====================================================================================
VRF Update
Run the following command to update a tenant VRF on the static route BFD:
efa tenant vrf update --name ten1vrf1 --tenant ten1
--operation static-route-bfd-add
--ipv4-static-route-bfd 10.20.246.5,10.1.1.3,10.1.1.1
--ipv4-static-route-bfd 10.20.246.6,10.1.1.3,10.1.1.2
Example
(efa:root)root@node-2:-# efa tenant vrf show --detail
===============================================================
Name : ten1vrf1
Tenant : ten1
Type : extension
Routing Type : distributed
Centralized Routers :
Redistribute : connected
Max Path : 8
Local ASN :
L3VNI : 8192
EVPN IRB BD : 4096
EVPN IRB VE : 8192
BR VNI : 4096
BR BD :
BR VE :
RH Max Path :
Enable RH ECMP : false
Enable Graceful Restart : false
Route Target : import 101:101
: export 101:101
Static Route :
Static Rout BFD : Switch-IP->[DestIP,SourceIP][Interval,Min-Rx,Multiplier], ...
: 10.20.246.6->10.1.1.3,10.1.1.2
: 10.20.246.5->10.1.1.3,10.1.1.1
State : vrf-device-created
Dev State : provisioned
App State : cfg-in-sync
====================================================================================
Switch Config
Rack1-Device1(config)# do show running-config vlan 11 vlan 11 router interface Ve 11 suppress-arp description Tenant L3 Extended VLAN ! Rack1-Device1(config)# do show running config interface Ve 11 interface Ve 11 vrf forwarding ten1vrf1 ip anycast address 20.0.11.1/24 ip address 10.1.1.1/24 no shutdown ! Rack1-Device1(config)# do show running config interface Ethernet 0/1 interface Ethernet 0/1 cluster-track bfd software session switchport switchport mode trunk switchport trunk allowed vlan add 11 no switchport trunk tag native-vlan no shutdown ! Rack1-Device1(config)# do show running config vrf ten1vrf1 address family ipv4 unicast vrf ten1vrf1 address family ipv4 unicast route target export 101:101 evpn route target import 101:101 evpn ip route static bfd 10.1.1.3 10.1.1.1 ! ! Rack1-Device1(config)# |
Rack1-Device2(config)# do show running config vlan 11 vlan 11 router interface Ve 11 suppress arp description Tenant L3 Extended VLAN ! Rack1Device2(config)# do show running config in Ve 11 interface Ve 11 vrf forwarding ten1vrf1 ip anycast address 20.0.11.1/24 ip address 10.1.1.2/24 no shutdown ! Rack1Device2(config)# do show running config int eth 0/1 interface Ethernet 0/1 cluster track bfd software session switchport switchport mode trunk switchport trunk allowed vlan add 11 no switchport trunk tag native-vlan no shutdown ! Rack1-Device2(config)# do show running config vrf ten1vrf1 address family ipv4 unicast vrf ten1vrf1 address family ipv4 unicast route target export 101:101 evpn route target import 101:101 evpn ip route static bfd 10.1.1.3 10.1.1.2 ! ! Rack1-Device2(config)# |
The cep-bfd-session-type feature enables you to provide cep bfd session type per EPG which gets configured on all the ethernet and single homed port channel interfaces defined in the EPG.
The default value of cep bfd session type is set to “auto”. EFA automatically derives the appropriate cep bfd session type based on the use case (extension or l3 hand off) and endpoint type.
You can provide the cep bfd session type configuration during EPG create and EPG update port group add operations.
| Operation | Command |
|---|---|
| Create EPG |
efa tenant epg create --name < epg-name> --tenant <tenant-name>
--port <port-list> po <po-list>
--switchport-mode <access | trunk> --cep-bfd-session-type {auto | software | hardware}
|
| Update EPG |
efa tenant epg update --name < epg-name> tenant <tenant-name>
--operation port group add
--port <port-list> --po <po-list>
switchport-mode < access|trunk > --cep-bfd-session-type {auto | software | hardware}
|
| CEP SRIOV and Non SRIOV | Upgrade Handling |
|---|---|
|
During the upgrade from EFA 2.4.0 to 2.4.1 and onwards, all the CEP ports (on SLX 9250 and SLX 8720 platforms) used in the “extension” EPG must have cep bfd session type as software, and you must perform an explicit DRC to reconcile the EFA configuration to synchronize with the SLX. |
Co-existence of centralize and distributed routing on a CEP
