[OOR-Users] Prefix expiration dropping traffic

[José Miguel Guzmán]

Hi All

We realized that every minute, we are dropping traffic packets due to
expiration of the destination prefix, and time required to update the entry
form server (couple of seconds)

*[2017/6/8 18:53:48] DEBUG: Got expiration for EID 192.168.102.0/24
<http://192.168.102.0/24>*

*[2017/6/8 18:53:49] DEBUG: No map cache for EID 192.168.102.168. Sending
Map-Request!*
[2017/6/8 18:53:49] DEBUG-2: lisp_addr_get_ip_pref_addr: Not applicable to
ip addressess
[2017/6/8 18:53:49] DEBUG: Balancing locator vector for 192.168.102.168/32:
[2017/6/8 18:53:49] DEBUG:   IPv4 locators vector (0 locators):
[2017/6/8 18:53:49] DEBUG:   IPv6 locators vector (0 locators):
[2017/6/8 18:53:49] DEBUG:   IPv4 & IPv6 locators vector (0 locators):
[2017/6/8 18:53:49] DEBUG: locators for req: 172.16.60.8
[2017/6/8 18:53:49] DEBUG: Map-Request-> flags:a=0,m=0,p=0,s=0,P=0,S=0,
irc: 0 (+1), record-count: 1, nonce: 78627d755, itr-rlocs:172.16.60.8,
src-eid: 192.168.101.1, req-eid: 192.168.102.168/32
[2017/6/8 18:53:49] DEBUG-2: lisp_addr_get_ip_addr: Not applicable to
prefixes
[2017/6/8 18:53:49] DEBUG: ECM -> flags:s, inner IP: 192.168.101.1 ->
192.168.102.168/32, inner UDP: 4342 -> 4342
[2017/6/8 18:53:49] DEBUG: Sent control message IP: 172.16.60.8 ->
172.16.60.194 UDP: 4342 -> 4342
*[2017/6/8 18:53:49] DEBUG: Received Map-Reply-> flags:P=0,E=0,S=0,
record-count: 1, nonce: 78627d75597fe77d, IP: 192.168.123.75 ->
172.16.60.8, UDP: 4342 -> 4342*
[2017/6/8 18:53:49] DEBUG:   Mapping-record -> ttl: 1 loc-count: 1 action:
no-action auth: 0 map-version: 0 eid: 192.168.102.0/24
[2017/6/8 18:53:49] DEBUG:     Locator-record -> flags: L=1,p=0,R=1, p/w:
1/100 255/0, addr: 172.16.60.9
[2017/6/8 18:53:49] DEBUG-2: mapping_get_locators_with_afi: List for OOR
AFI 1 and afi 2 not yet created
[2017/6/8 18:53:49] DEBUG-2: mapping_add_locator: Added locator 172.16.60.9
to the mapping with EID 192.168.102.0/24.
[2017/6/8 18:53:49] DEBUG-2: mapping_get_locators_with_afi: List for OOR
AFI 3 and afi 10 not yet created
[2017/6/8 18:53:49] DEBUG: Balancing locator vector for 192.168.102.0/24:
[2017/6/8 18:53:49] DEBUG:   IPv4 locators vector (1 locators):
172.16.60.9
[2017/6/8 18:53:49] DEBUG:   IPv6 locators vector (0 locators):
[2017/6/8 18:53:49] DEBUG:   IPv4 & IPv6 locators vector (0 locators):
*[2017/6/8 18:53:49] DEBUG: The map cache entry of EID 192.168.102.0/24
<http://192.168.102.0/24> will expire in 1 minutes.*
[2017/6/8 18:53:49] DEBUG-2: Programming probing of EID's 192.168.102.0/24
locator 172.16.60.9 (30 seconds)

I am not sure if I am doing something wrong.. (probably :))

Is there any way to handle this transparently? For instance, have xTR
refreshing prefixes 5secs before expiration, so, traffic is not interrupted?
Are these expiration timers, configurable? I only see that rloc-probing
timers are tunable.

Thanks!
JM




-- 

*José Miguel Guzmán*Senior Network Consultant
Latin America & Caribbean
  +1 (650) 248-2490 <+16502482490>
  +56 (9) 9064-2780 <+56990642780>
  jmguzman at whitestack.com
  jmguzmanc
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