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PIX VPN wont re-establish when peer IP has changed.

d.bigerstaff
Level 1
Level 1

I have a PIX501 at a remote site (213.x.x.186).

I had to install a Linksys VPN router at another remote site and VPN between the two.

I configured the Linksys in my office on a static IP (84.x.x.14) and remotely configured the PIX, i got these working fine.

I have since installed the Linksys at the other remote site and changed the static IP (213.x.x.235).

On the PIX i reconfigured:

crypto map transam 1 set peer 213.x.x.235

isakmp key ******** address 213.x.x.235 netmask 255.255.255.255 no-xauth no-config-mode.

On the pix "show crypto ipsec sa" shows:

interface: outside

Crypto map tag: transam, local addr. 213.x.x.186

local ident (addr/mask/prot/port): (10.0.0.0/255.255.255.0/0/0)

remote ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)

current_peer: 84.x.x.14:500

PERMIT, flags={origin_is_acl,}

#pkts encaps: 88, #pkts encrypt: 88, #pkts digest 88

#pkts decaps: 83, #pkts decrypt: 83, #pkts verify 83

#pkts compressed: 0, #pkts decompressed: 0

#pkts not compressed: 0, #pkts compr. failed: 0, #pkts decompress failed: 0

#send errors 0, #recv errors 0

local crypto endpt.: 213.x.x.186, remote crypto endpt.: 84.x.x.14

path mtu 1500, ipsec overhead 56, media mtu 1500

current outbound spi: 0

inbound esp sas:

inbound ah sas:

inbound pcp sas:

outbound esp sas:

outbound ah sas:

outbound pcp sas:

This output shows the connection to my office still, and the Linksys connected in the remote site will not re-establish a connection.

show crypto isakmp sa shows:

Total : 1

Embryonic : 0

dst src state pending created

213.x.x.186 213.x.x.235 QM_IDLE 0 0

I've tried clearing this entry with "clear crypto ipsec sa peer" and it will not disappear and reestablish with the new configuration.

Can anyone throw me some suggestions?

2 Replies 2

Kamal Malhotra
Cisco Employee
Cisco Employee

Hi,

When you do 'show cryptoo map' you should see something like :

crypto map transam interface

do a

no crypto map transam interface

and

crypto map transam interface

It should resolve the problem. Please do not forget to clear the SAs.

HTH,

Kamal

Thanks for your help,

The issue actually turned out to be my boss changing the local subnet on the Linksys to be 192.168.101.0 , when it was initially 192.168.1.0.

I only changed the access-lists on the PIX but also needed to change local secure group on the PIX.

Thanks anyways mate.