I am trying to configure Cisco ASA5506X in transparent mode using bridge groups. I follow all the official guidelines, but ASA does not bridge traffic...
The layout is:
Host (10.200.80.7) ---------- ASA Gi1/2.200 (vlan 200) --- bridge group 200 (10.200.80.2) --- ASA Gi1/1.59 (vlan 59) ----------- Gateway (10.200.80.1).
The configuration is below.
ciscoasa# sh run
: Serial Number: JAD201102AM
: Hardware: ASA5506, 4096 MB RAM, CPU Atom C2000 series 1250 MHz, 1 CPU (4 cores)
ASA Version 9.5(2)
enable password <output deleted> encrypted
ip address 10.200.80.2 255.255.255.0
ftp mode passive
pager lines 24
logging buffer-size 512000
logging buffered debugging
mtu inside200 1500
mtu outside200 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 sctp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
user-identity default-domain LOCAL
no snmp-server location
no snmp-server contact
crypto ipsec security-association pmtu-aging infinite
crypto ca trustpool policy
telnet timeout 5
no ssh stricthostkeycheck
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
prompt hostname context
no call-home reporting anonymous
Interface gig 1/1 and 1/2 do they connect directly to host or a switch. As you have sub-interface with VLAN 200 and 59 make sure interfaces on switch are trunk ports and VLAN 200 and 59 are allowed.
They are connected to a switch. The interfaces on the switch are configured correctly, otherwise ASA could not ping its neoghbors, but it can, as I wrote before.
Can you check logs of SFR ? Or try
no sfr fail-open
Above step is to disable SFR features on ASA, This is just for testing.
I managed to locate the problem, and it looks the same as here:
The problem is that ASA blocks ARP replies. When I ping a host from inside to outside, the host sends out an ARP request. With a packet sniffer, I see that the request reaches the host (10.200.80.1 in my case), and the host replies, but this reply never reaches the ping inititator. Any idea how to solve it? I am currently thinking it is a bug of 9.5(2) and planning to upgrade to the latest version.
Could you please try adding icmp inspection and see if that helps.
service-policy global_policy global
Could you please run the following debugs and also attach the syslogs from the ASA:
debug icmp trace
and take level 6 syslogs.
debug icmp trace showed no ICMP requests. And I decided to go down to ARP level. See my posts below.
level 6 logging showed nothing interesting, no drops.