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Combining LAN ports on Cisco Firepower /Ethercahnnel or something else

amh4y0001
Level 3
Level 3

Hi,

I have Cisco Firepower 1100 series (FPR-1120) 
System image file is "disk0:/installables/switch/fxos-k8-fp1k-lfbff.2.8.1.105.SPA"

I am in a need to configure two or more LAN interfaces to make a LAN which can communicate at LAN level (in other words, in the same VLAN or same network).
I created a Ether channel as: 

amh4y0001_0-1688734794766.png

amh4y0001_1-1688734865747.png

And let the DHCP (with all default values) to assign the IP addresses.

Now one of the member port is now connected with a network which is distributing IP addresses via DHCP. 
When I connect a PC to second member port, it didn't get any IP from DHCP.

What should be configured to achieve a LAN based communication /switching so that I connect multiple devices belonging to the same network.

Note: I fully understand that Firepower is not designed for switching, and best solution should be to connect a LAN Switch in between to attach multiple clients. But sometimes, needs to find a solution outside of the recommended zone. 
Any suggestion /step by step guide /screenshots will be appreciated.

 

25 Replies 25

you need assign IP to BVI 

 

amh4y0001_0-1688988312460.png

I believe I am doing it correct i.e. assign static IP address to BVI interface.

you need to enable DHCP server in this interface to make endpoint get IP from ASA BVI. >> If static IP address is assigned, how I can enable DHCP server?

amh4y0001
Level 3
Level 3

@MHM Cisco World Thanks for reply.

Now have enabled DHCP on BVI interface as:

amh4y0001_0-1688994727907.png

Connected a client and still I didn't get IP from DHCP scope, but APIPA 169.x.x.x

amh4y0001_1-1688994923174.png

 

 

FPR
endpoint1 connect to Eth1 (for example)
endpoint2 connect to Eth2 (for example)

go to interface Eth1 and Eth2 and add it to group 1 
and config name for each interface (as you want).



003-Remove-ASA-Inteface-From-BVI.png

amh4y0001
Level 3
Level 3

@MHM Cisco World Thanks for supportive reply. 

Can you have a look on the following (step-by-step) procedure? I am still getting 169.x.x.x on the end points side.

amh4y0001_0-1688999048319.png

 

 

amh4y0001_1-1688999048321.png

 

 

amh4y0001_2-1688999048324.png

 

 

amh4y0001_3-1688999048327.png

 

 

amh4y0001_4-1688999048329.png

 

 

amh4y0001_5-1688999048330.png

 

 

amh4y0001_6-1688999048335.png

 

 

amh4y0001_7-1688999048335.png

 

 

FW3# sh ip address
System IP Addresses:
Interface Name IP address Subnet mask Method
Ethernet1/2 inside 192.168.1.1 255.255.255.0 CONFIG
Ethernet1/3 10.11.12.107 255.0.0.0 manual
Ethernet1/4 10.11.12.107 255.0.0.0 manual
Management1/1 management unassigned unassigned DHCP
BVI7 BVI7 10.11.12.107 255.0.0.0 manual
Current IP Addresses:
Interface Name IP address Subnet mask Method
Ethernet1/2 inside 192.168.1.1 255.255.255.0 CONFIG
Ethernet1/3 10.11.12.107 255.0.0.0 manual
Ethernet1/4 10.11.12.107 255.0.0.0 manual
Management1/1 management unassigned unassigned DHCP
BVI7 BVI7 10.11.12.107 255.0.0.0 manual

 

all OK, just add nameif & secuirty level (must be 100) of port connect to endpoint 

amh4y0001
Level 3
Level 3

@MHM Cisco World 
Security level is configured same as for the inside interface i.e. 100 ... or it should be something different? 

amh4y0001_1-1689000215764.png

Regarding the name, you mean Eth3 and Eth4 should be named differently? I tried to have same as BVI7, but that wasn't allowed.

amh4y0001_2-1689000287513.png

 

 

 

security level must same for endpoints ports and BVI 
name must be different like BVI7_1 and BVI7_2

amh4y0001
Level 3
Level 3

A BIG Thank YOU @MHM Cisco World 

Finally, endpoints are received IP address as it should be.

amh4y0001_6-1689001329292.png

 

 
 

 

 

 

 

You are So So welcome
thanks for your words 
have a nice day 
MHM

Have a nice day you too @MHM Cisco World, your suggestion to use BVI instead of Ether channel saved the day, highly appreciated. 

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