10-11-2007 01:31 PM - edited 03-05-2019 07:02 PM
Hi geeks,
I've got a trouble as to the DHCP running on ASA 5505. It is not picking any external IP from ADSL router. Upon iterative modification and testing, still no luck in accessing Internet.
My set up is:
Internet--> DSL router--> ASA 5505
Here is the result after issuing "sh route" and "sh ip" command.
C 127.1.0.0 255.0.0.0 directly connected
C 192.168.1.0 255.255.255.0 direcly connected
C 125.xxx.xxx.xxx 255.255.255.255 direcly connected
d* 0.0.0.0 0.0.0.0 [1/0] via 125.xxx.xxx.xxx
Vlan 1: 192.168.1.1 255.255.255.0
Vlan 2: 125.xxx.xxx.xxx 255.255.255.255
c(config)# sh run
: Saved
:
ASA Version 8.0(2)
!
hostname c
domain-name default.domain.invalid
enable password xxx
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0
!
interface Vlan2
nameif o
security-level 0
ip address dhcp setroute
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
passwd xxx
ftp mode passive
dns server-group DefaultDNS
domain-name default.domain.invalid
pager lines 24
logging asdm informational
mtu inside 1500
mtu o 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-602.bin
no asdm history enable
arp timeout 14400
global (o) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
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 uauth 0:05:00 absolute
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
no crypto isakmp nat-traversal
telnet timeout 5
ssh timeout 5
console timeout 0
dhcp-client client-id interface o
dhcpd auto_config o
!
dhcpd address 192.168.1.2-192.168.1.33 inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
!
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:xxx
: end
Coule you please give a clue on Internet access?
Many thanks
Anita
10-11-2007 01:44 PM
Hi,
I am giving additional info regarding my setup here.
As i attempt to configure vpn using ASA 5505, the adsl router needs to be "half bridge". Before i launch any change, i already checked the adsl router alone was working properly. I also confirmed the capability that ASA 5505 can surf Internet when connected to ADSL router without "half bridge".
I think i must miss out something, could you please give me a clue on it?
Any comments or advice would be highly appreciated.
Anita
10-11-2007 01:53 PM
Sorry for the confusing stuff, i have posted the wrong result.
As i used Dlink 302g as "half bridge" previously. It just worked fine with ASA 5505, but no internet access. Then i tried NOKIA M1122, it can't pick any external IP.
My question is whethter dlink incompatible with ASA 5505. If no, how to fulfill Internet access using ASA 5505 and dlink.
Many thanks
Anita
10-16-2007 08:56 AM
Do you have a link light from the dlink router to the ASA? Are duplex/speeds set right? Also, can you pull an IP with a laptop directly connected to that router?
10-27-2007 09:34 PM
Hi Noran,
Thanks for your quick replies.
Yes, the link light from the dlink router to ASA was up. Duplex / speeds settings were auto.
Actually, the outside interface of ASA can pick IP address directly from the dlink router with NAT, for example, 10.1.1.4. It can also pick IP address 125.xxx.xxx.xxx from the dlink router with half bridge, but all other routers, like linksys, netgear, alcatel and nokia don't.
Therefore, I believe it comes to the half bridge problem.
Since i attamp to config remote access VPN, any advice on the dlink router settings would be highly appreciated.
Cheers
Anita
11-28-2007 05:15 PM
Anita,
Sadly, I have no answers for you but I am in the same boat. Any luck for you yet?
I have tried a dlink router and a Westell 2000 modem (with DHCP server built in) to provide a DHCP address to an ASA 5505. No luck. Both will provide DHCP addresses to other routers or networks no problem, just the Cisco won't pick one up.
If I configure the Cisco with a static IP on the outside interface, I can access the dlink's Web interface no problem. If I switch to DHCP and try to renew, I always get a "DHCP lease has not been renewed" error.
I checked the config on the Cisco and it is correctly "ip address dhcp setroute". But the ip address always shows up as unassigned.
I am running 7.2(2) firmware.
Help! I am a moron!!
12-08-2007 07:38 AM
Here is a solution:
If you are running 7.2.3 or later you have a checkbox in ASDM Configuration / Interfaces / Outside / Edit / General. Check the value in "For the client identifier in DHCP option 61" - "Use Mac address".
If you dont have 7.2.3 you can in 7.2.2 try this:
In ASDM open configuration / Interfaces. Click outside (in my case 0/0) and press Edit. Then open the tab Advanced and set the correct Active Mac address for outside. You will find the correct MAC address under the help menu / "About ASA".
Im sure there is some another way to do this but this is a simple "how-to" that works with Swedens biggest ISP and their standard DSL modem.
Hopa this helps!
12-10-2007 02:30 PM
It didn't work on my ASA with 7.2.2, but it seems that you are definitely on the right track. Also I only tried it so far with a dlink router as DHCP server.
I switched to static DSL at the same bum rate of 384-768MBps down (bad wiring in our area). Now I get to pay twice as much, so I will keep trying based on your suggestion. The DSL modem is still serving up DHCP.
Thanks for your excellent idea!
Andrew
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide