06-14-2011 03:29 PM - edited 03-11-2019 01:45 PM
Hi,
I'm having problems configuring an asa 8.2(1) with a backup isp. I followed the asdm instructions in this document:
I have my backup interface configured as DHCP and the static routes set. Pinging the gateway and other external IP address from the backup interfaces works normally. I have also tried configuring the backup interface as a static address but got the same results.
When removing the primary wan link, all traffic stops. When I ping a external DNS, I get these errors in the log:
portmap translation creation failed for udp src inside: 192.168.13.23 dst backup:208.67.222.222_type 8, code0)
I though this type of error is related to a NAT problem, not sure where to look though.
Thanks,
Dustin
Solved! Go to Solution.
06-14-2011 05:09 PM
try this :-
asa(config)#global (backup) 1 interface
Also, There is a known not fixed bug with using this that affects UDP connection , so your firewall might need "clear local" command everytime the failover occurs to clear UDP connection that were established earlier for voice packets etc . Can't recall the Bug_ID but I faced it when I configured similar stuff for a client of mine.
Manish
06-14-2011 03:34 PM
Post your stanitized copy of sh run.
Manish
06-14-2011 03:46 PM
Here is the config. There are no production systems on this network.
ASA Version 8.2(1)
!
hostname ciscoasa
enable password 8GfX8PPxaJVNsUkN encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.13.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address 96.x.x.x 255.255.255.0
!
interface Vlan5
nameif dmz
security-level 50
ip address 192.168.15.1 255.255.255.0
!
interface Vlan15
nameif backup
security-level 1
ip address dhcp
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
switchport access vlan 15
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
ftp mode passive
access-list outside_access_in extended permit icmp any any
access-list backup_access_in extended permit icmp any any
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu dmz 1500
mtu backup 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
nat (backup) 1 0.0.0.0 0.0.0.0
access-group outside_access_in in interface outside
access-group backup_access_in in interface backup
route outside 0.0.0.0 0.0.0.0 96.x.x.x 128 track 1
route backup 0.0.0.0 0.0.0.0 192.168.50.250 150
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 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
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.1.0 255.255.255.0 inside
http 192.168.13.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
sla monitor 123
type echo protocol ipIcmpEcho 96.238.212.1 interface outside
frequency 10
sla monitor schedule 123 life forever start-time now
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
!
track 1 rtr 123 reachability
telnet timeout 5
ssh timeout 5
console timeout 0
dhcp-client client-id interface backup
dhcpd auto_config outside
!
dhcpd address 192.168.13.5-192.168.13.254 inside
dhcpd dns 208.67.222.222 interface inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
!
service-policy global_policy global
prompt hostname context
Cryptochecksum:03b4bb72b671103e050fb463f6194e0a
: end
06-14-2011 05:09 PM
try this :-
asa(config)#global (backup) 1 interface
Also, There is a known not fixed bug with using this that affects UDP connection , so your firewall might need "clear local" command everytime the failover occurs to clear UDP connection that were established earlier for voice packets etc . Can't recall the Bug_ID but I faced it when I configured similar stuff for a client of mine.
Manish
06-14-2011 05:15 PM
Thanks, adding "global (backup) 1 interface" fixed the issue!
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