EzVPN sometimes ping only in one direction or only one interface
Guys, I have lots of 857's routers in the field with mostly the latest OS - 12.4(15)T17 making ezVPN connections to a 2951 with 15.1(4)M5.
All the 857's have lookback and vlan interfaces similar to :
interface Loopback0
ip address 50.43.8.1 255.255.255.255
ip tcp adjust-mss 1452
end
interface Vlan1
ip address 40.43.8.1 255.255.255.128
ip tcp adjust-mss 1452
crypto ipsec client ezvpn SMS_VPN inside
end
This is my Dialer interface :
interface Dialer0
ip ddns update hostname my_custom_host_name
ip ddns update SMS_DynDNS
ip address negotiated
ip access-group 102 in
ip access-group 101 out
ip mtu 1492
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer idle-timeout 0
dialer persistent
ppp authentication chap pap callin
ppp chap hostname my_hostname
ppp chap password 0 my_password
ppp pap sent-username my_hostname password 0 my_password
ppp ipcp dns request accept
crypto ipsec client ezvpn SMS_VPN
And their crypto's are defined as :
crypto ipsec client ezvpn SMS_VPN
connect auto
group HW_Client key my_client_key
mode network-extension
peer my_peer_ip
acl 100
username my_username password my_password
xauth userid mode local
Now lately for some or other reason we have instances where I can ping either the VLAN or the LOOPBACK interface, but not both. Or I have instances where the 2951 can ping all the interfaces on the 857, but the 857 can not ping the 2951. Or I have instances where the 2951 can not ping the 857, but the 857 can ping the 2951.
The way I have been fixing this is either to add crypto ipsec client ezvpn SMS_VPN inside to the loopback interface, or if it is there already to remove it. This usually works for a few days, but then suddenly I have to reverse this again. If that does not work then I usually do lots of clear crypt sess and/or clear crypt ipsec client ezvpn on the 857, or clear crypt sess remote 857_ip_address from the 2951 and then suddenly it starts working again.
Surely there must be something wrong, but I just can not figure out what. Any ideas ?!
Bump ... Anyone please ...
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Jayson wrote:
> Hi all,
>
> I think you saw one post regarding this issue in SDN, but I can't find the post any more.
>
> So, I have message splitting (it's multiple mappings to map one outbound msg to multip inbound msgs, not one mapping to map 1 to n. This is because of our own reason, but should not affect the analysis of the issue) to split one message to multiple. It works fine if the outbound message contains data for every inbound interface. However if the outbound message does NOT contain data for any one inbound message, there is an error in MONI and all subsequently splitted messages will not be passed in IE. The error in MONI says Split mapping created no messages, and Queue status turns to be Queue Stopped, and thus all the subsequently splitted messages are stuck in the queue.
>
> Why this? and how to solve this problem?
>
> Thanks
> Jayson
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tick in that interface detemination and it will surely work
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536E56A4 200.11.98.9.61369 200.11.96.126.179 ESTAB
53359454 200.11.98.9.22913 200.11.96.81.646 ESTAB
4B6C25EC 200.11.98.9.646 200.111.117.251.53802 ESTAB
537CFBE4 200.11.98.9.62975 200.11.96.125.179 ESTAB
5330A774 200.11.98.9.646 200.111.117.86.62367 ESTAB
4B4D97EC 200.11.98.9.18753 200.11.96.88.646 ESTAB
4B018A28 200.11.98.9.61292 200.11.98.8.646 ESTAB
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4B1976F0 200.11.98.9.17760 190.151.97.92.646 ESTAB
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537CEFF8 200.11.98.9.646 200.111.117.74.54785 ESTAB
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PE2-PCS-RANCAGUA#
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Edited by: user11410176 on Oct 21, 2009 9:55 AMHi Lucky,
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