Prerequisites
Before proceeding with configuring the device for a Chassis Cluster, complete these prerequisites:
a. In
the SRX configuration, remove any existing configuration associated
with the interfaces that will be transformed into fxp0 (out-of-band
management) and fxp1 (control link) when the chassis cluster feature is
enabled.
Important note:
If you do not perform this prerequisite, then your chassis cluster may
not come up; it may go into a Hold/Lost state on both nodes.
b. Confirm that the HARDWARE on both devices is the same.
Verify using this command on both devices:
root> show chassis hardware detail
Hardware inventory:
Item Version Part number Serial number Description
Chassis AD4109AA0352 SRX210H
Routing Engine REV 33 750-021779 AAAX5645 RE-SRX210H
da0 999 MB ST72682 Nand Flash
usb0 (addr 1) DWC OTG root hub 0 vendor 0x0000 uhub0
usb0 (addr 2) product 0x005a 90 vendor 0x0409 uhub1
usb0 (addr 3) ST72682 High Speed Mode 64218 STMicroelectronics umass0
FPC 0 FPC
PIC 0 2x GE, 6x FE, 1x 3G
For more information, refer to
KB16141 - What are the minimum hardware and software requirements for a Chassis Cluster on SRX?
c. Confirm that the SOFTWARE on both standalone devices is the same Junos OS version.
Verify using this command on both devices:
root> show version
Model: srx210h
JUNOS Software Release [11.4R7.5]
There is not a separate license for chassis cluster. However, both firewalls must have the identical features and license keys enabled or installed. Note that the license keys are not required to configure your chassis cluster, but they are required once your chassis cluster is in production and you need to use those features on either device.
Verify the license keys by using this command on both devices:
root> show system license
e. If running Junos 10.4, Ethernet switching is not supported. For more information, refer to
Disabling Switching on SRX Devices Before Enabling Chassis Clustering.
Configuration
The following are the basic steps required for configuring a Chassis Cluster on SRX210 devices.
Physically connect the two devices together to form the control and fabric (data) links. Control link: On the SRX210 device, connect
fe-0/0/7 on device A to
fe-0/0/7 on device B. The fe-0/0/7 interface on device B will change to fe-2/0/7 after clustering is enabled in Step 2.
Note: It is strongly recommended that the interfaces used for the control link are connected directly with a cable (instead of a switch). If a switch must be used, then refer to
KB25017.
Fabric (Data) link: On the SRX210 device, connect
ge-0/0/1 on device A to
ge-0/0/1 on device B. The ge-0/0/1 interface on device B will change to ge-2/0/1 after clustering is enabled in Step 2.
Note: For the Fabric (Data) link, it is recommended to use a GE port. If ge-0/0/1 is not available, you can choose another open port on your devices. The Fabric (Data) link can be any available open port either onboard or gPIM other than fe-0/0/6 and fe-0/0/7.
It is helpful to know that after step 2, the following will interface assignments will occur:
- fe-0/0/6 will become fxp0 and used as for individual management of each of the devices
- fe-0/0/7 will become fxp1 and used as the control link between the two devices (This is also documented in KB15356.)
- The other interfaces are also renamed on the secondary device. For example, on a SRX 210 device, the ge-0/0/0 interface is renamed to ge-2/0/0 on the secondary node 1. Refer to the complete mapping for each SRX Series device: Node Interfaces on Active SRX Series Chassis Clusters.
Enable cluster mode and reboot the devices. Note that this is done in
operational mode and not with a
configure mode command.
> set chassis cluster cluster-id <0-15> node <0-1> reboot
For example:
On device A: >set chassis cluster cluster-id 1 node 0 reboot
On device B: >set chassis cluster cluster-id 1 node 1 reboot
- Cluster id will be the same on both devices, but the node id should be different as one device is node0 the other device is node1.
- This command will need to be done on both devices.
- The range for the cluster-id is 0-15. Setting it to 0 is the equivalent of disabling cluster mode. User has only 1-15 (15 cluster IDs) ids for working cluster, so user can calculate virtual MAC only for these 15 cluster ids. For more information, refer to [KB13689] How is the virtual MAC address derived for reth interfaces on J-Series and SRX?
After the reboot, note how the fe-0/0/6 and fe-0/0/7 interfaces are re-purposed to fxp0 and fxp1 respectively.
NOTE: The following steps 3 - 8 can all be performed on the primary device (Device A), and they will be automatically copied over to the secondary device (Device B) when a commit is done.
Configure the device specific configurations such as host names and management IP addresses. This is specific to each device and is the only part of the configuration that is unique to its specific node. This is done by entering the following commands (all on the primary node):
On device A:
{primary:node0}
# set groups node0 system host-name <name-node0> -Device A's host name
# set groups node0 interfaces fxp0 unit 0 family inet address <ip address/mask> -Device A's management IP address on fxp0 interface
# set groups node1 system host-name <name-node1> -Device B's host name
# set groups node1 interfaces fxp0 unit 0 family inet address <ip address/mask -Device B's management IP address on fxp0 interface
The 'set apply-groups' command is run so that the individual configs for each node, set by the above commands, are applied only to that node. This command is required.
Configure the FAB links (data plane links for RTO sync, etc). For this example we will use physical ports ge-0/0/1 from each node.
On device A:
{primary:node0}
-fab0 is node0 (Device A) interface for the data link
# set interfaces fab0 fabric-options member-interfaces ge-0/0/1
-fab1 is node1 (Device B) interface for the data link
# set interfaces fab1 fabric-options member-interfaces ge-2/0/1
Configure the Redundancy Group 0 for the Routing Engine failover properties. Also configure Redundancy Group 1 (all the interfaces will be in one Redundancy Group in this example) to define the failover properties for the Reth interfaces.
Note: If you want to use multiple Redundancy Groups for the interfaces, refer to the
Security Configuration Guide.
{primary:node0}
# set chassis cluster redundancy-group 0 node 0 priority 100
# set chassis cluster redundancy-group 0 node 1 priority 1
# set chassis cluster redundancy-group 1 node 0 priority 100
# set chassis cluster redundancy-group 1 node 1 priority 1
Configure interface monitoring. Monitoring the health of the interfaces is one way to trigger Redundancy group failover.
Note: Interface monitoring is not recommended for redundancy-group 0.
On device A:
{primary:node0}
# set chassis cluster redundancy-group 1 interface-monitor ge-0/0/0 weight 255
# set chassis cluster redundancy-group 1 interface-monitor fe-0/0/2 weight 255
# set chassis cluster redundancy-group 1 interface-monitor ge-2/0/0 weight 255
# set chassis cluster redundancy-group 1 interface-monitor fe-2/0/2 weight 255
Configure the Redundant Ethernet interfaces (Reth interface) and assign the Redundant interface to a zone. Make sure that you setup your max number of redundant interfaces as follows:
On device A:
{primary:node0}
# set chassis cluster reth-count <max-number>
-for first interface in the group (on Device A)
# set interfaces <node0-interface-name> fastether-options redundant-parent reth0
-for second interface in the group (on Device B)
# set interfaces <node1-interface-name> fastether-options redundant-parent reth0
-set up redundancy group for interfaces
# set interfaces reth0 redundant-ether-options redundancy-group <group-number>
# set interfaces reth0.0 family inet address <ip address/mask>
# set security zones security-zone <zone> interfaces reth0.0
For example:
On device A:
{primary:node0}
# set chassis cluster reth-count 2
-for first interface in the group (on Device A)
# set interfaces fe-0/0/2 fastether-options redundant-parent reth1
-for second interface in the group (on Device B)
# set interfaces fe-2/0/2 fastether-options redundant-parent reth1
-set up redundancy group for interfaces
# set interfaces reth1 redundant-ether-options redundancy-group 1
# set interfaces reth1 unit 0 family inet address 192.168.1.1/24
-for first interface in the group (on Device A)
# set interfaces ge-0/0/0 gigether-options redundant-parent reth0
-for second interface in the group (on Device B)
# set interfaces ge-2/0/0 gigether-options redundant-parent reth0
-set up redundancy group for interfaces
# set interfaces reth0 redundant-ether-options redundancy-group 1
# set interfaces reth0 unit 0 family inet address 10.10.10.200/24
# set security zones security-zone untrust interfaces reth0.0
# set security zones security-zone trust interfaces reth1.0
Commit and changes will be copied over to the Secondary Node, Device B.
On device A:
{primary:node0}
# commit
This will prepare the basic clustering setting for both the devices.
TIP: If you want to manage this cluster via NSM or any other Management devices, refer to
KB20795.
For more configuration help, check out the
SRX High Availability Configurator Tool
Technical Documentation
Chassis Cluster for Security Devices
Junos 12.1X45-D10
Junos 11.4
- PDF--See Chapter 48, Chassis Cluster (page 1319)
- HTML
Verification
You can check the cluster status with the following commands.
show chassis cluster status
show chassis cluster interfaces
show chassis cluster statistics
show chassis cluster control-plane statistics
show chassis cluster data-plane statistics
