<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
		>
<channel>
	<title>Comments on: OSPF routing between 3 sites over IPSec VPN terminated by ASA</title>
	<atom:link href="http://www.networkingblog.in/ospf-routing-between-3-sites-over-ipsec-vpn-terminated-by-asa-2-2875/feed" rel="self" type="application/rss+xml" />
	<link>http://www.networkingblog.in/ospf-routing-between-3-sites-over-ipsec-vpn-terminated-by-asa-2-2875</link>
	<description>Cisco Netpro Blog</description>
	<lastBuildDate>Wed, 23 Jun 2010 06:07:14 +0000</lastBuildDate>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.0</generator>
	<item>
		<title>By: arul</title>
		<link>http://www.networkingblog.in/ospf-routing-between-3-sites-over-ipsec-vpn-terminated-by-asa-2-2875/comment-page-1#comment-2014</link>
		<dc:creator>arul</dc:creator>
		<pubDate>Sat, 13 Mar 2010 16:12:08 +0000</pubDate>
		<guid isPermaLink="false">http://www.networkingblog.in/?p=2875#comment-2014</guid>
		<description>Thanks a lot for your time and willingness to help. The ASA config is pretty standard even if I have two IPSec tunnels configured on it.
I&#039;m providing you with sections of the config covering interfaces and crypto configuration to save space:
interface GigabitEthernet0/0
nameif outside
security-level 0
ip address x.x.x.26 255.255.255.248
!
interface GigabitEthernet0/1
shutdown
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/2
nameif inside
security-level 100
ip address 192.168.228.1 255.255.255.0

 

crypto ipsec transform-set SET1 esp-aes-256 esp-md5-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto map MAP1 1 match address TUNNEL-TO-PEER1
crypto map MAP1 1 set peer y.y.y.254
crypto map MAP1 1 set transform-set SET1

crypto map MAP1 1 match address TUNNEL-TO-BWY
crypto map MAP1 1 set peer z.z.z.254
crypto map MAP1 1 set transform-set SET1
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption aes
hash md5
group 2
lifetime 86400

 

router ospf 1
network 192.168.228.0 255.255.255.0 area 0
log-adj-changes
redistribute connected
redistribute static subnets route-map REDISTRIBUTE

 

If I were to follow the guide that I already mentioned I would need to add this line to interface Ethernet0/0:

 

ospf network point-to-point non-broadcast

 

There&#039;s no way to say point-to-multipoint under the ASA code as opposed to IOS.

 

One would say why not allocate one more outside interface/subinterface and configure it to point to other peer but it would greatly complicate things. It&#039;s just not viable at all.

 

And there&#039;s no problem adding networks under router ospf section at all. The only problem is how to make OSPF to send unicasts over IPSec tunnel to more than one peer.

 

Eugene</description>
		<content:encoded><![CDATA[<p><!--INFOLINKS_ON-->Thanks a lot for your time and willingness to help. The ASA config is pretty standard even if I have two IPSec tunnels configured on it.<br />
I&#8217;m providing you with sections of the config covering interfaces and crypto configuration to save space:<br />
interface GigabitEthernet0/0<br />
nameif outside<br />
security-level 0<br />
ip address x.x.x.26 255.255.255.248<br />
!<br />
interface GigabitEthernet0/1<br />
shutdown<br />
no nameif<br />
no security-level<br />
no ip address<br />
!<br />
interface GigabitEthernet0/2<br />
nameif inside<br />
security-level 100<br />
ip address 192.168.228.1 255.255.255.0</p>
<p>crypto ipsec transform-set SET1 esp-aes-256 esp-md5-hmac<br />
crypto ipsec security-association lifetime seconds 28800<br />
crypto ipsec security-association lifetime kilobytes 4608000<br />
crypto map MAP1 1 match address TUNNEL-TO-PEER1<br />
crypto map MAP1 1 set peer y.y.y.254<br />
crypto map MAP1 1 set transform-set SET1</p>
<p>crypto map MAP1 1 match address TUNNEL-TO-BWY<br />
crypto map MAP1 1 set peer z.z.z.254<br />
crypto map MAP1 1 set transform-set SET1<br />
crypto isakmp enable outside<br />
crypto isakmp policy 10<br />
authentication pre-share<br />
encryption aes<br />
hash md5<br />
group 2<br />
lifetime 86400</p>
<p>router ospf 1<br />
network 192.168.228.0 255.255.255.0 area 0<br />
log-adj-changes<br />
redistribute connected<br />
redistribute static subnets route-map REDISTRIBUTE</p>
<p>If I were to follow the guide that I already mentioned I would need to add this line to interface Ethernet0/0:</p>
<p>ospf network point-to-point non-broadcast</p>
<p>There&#8217;s no way to say point-to-multipoint under the ASA code as opposed to IOS.</p>
<p>One would say why not allocate one more outside interface/subinterface and configure it to point to other peer but it would greatly complicate things. It&#8217;s just not viable at all.</p>
<p>And there&#8217;s no problem adding networks under router ospf section at all. The only problem is how to make OSPF to send unicasts over IPSec tunnel to more than one peer.</p>
<p>Eugene<!--INFOLINKS_OFF--></p>
]]></content:encoded>
	</item>
	<item>
		<title>By: karan</title>
		<link>http://www.networkingblog.in/ospf-routing-between-3-sites-over-ipsec-vpn-terminated-by-asa-2-2875/comment-page-1#comment-2013</link>
		<dc:creator>karan</dc:creator>
		<pubDate>Sat, 13 Mar 2010 16:09:57 +0000</pubDate>
		<guid isPermaLink="false">http://www.networkingblog.in/?p=2875#comment-2013</guid>
		<description>The link that you show builds a single IPSec tunnel for a single OSPF neighbor. And you want a second OSPF neighbor. Have you added a second IPSec tunnel?
Perhaps if you post the configuration from your ASA we might be able to provide better answers.</description>
		<content:encoded><![CDATA[<p><!--INFOLINKS_ON-->The link that you show builds a single IPSec tunnel for a single OSPF neighbor. And you want a second OSPF neighbor. Have you added a second IPSec tunnel?<br />
Perhaps if you post the configuration from your ASA we might be able to provide better answers.<!--INFOLINKS_OFF--></p>
]]></content:encoded>
	</item>
</channel>
</rss>

