netstat/sctp pass commands to display TCP/IP or SCTP/IP network statistics
ualog/asplog/linkinfo pass command to retrieve logs of events in stack and control messages transmitted or received
msucount pass command to display traffic counts of MSUs that have been transmitted, received, rerouted, or discarded, and the discard reason
Verify UIMs and UAMs
If there are any Unsolicited Information Messages (UIMs) or Unsolicited Alarm Messages (UAMs) occurring related to the SIGTRAN configuration, refer to Unsolicited Alarms and Information Messages Reference.
Is the card configured correctly?
Card in system?
rtrv-card
rept-stat-card
IP link configured correctly? (rtrv-ip-lnk; preferred settings are 100/full duplex on card AND switch - no AUTO configure)
IP link configured correctly? (rtrv-ip-lnk; preferred settings are 100/full duplex on card AND switch - no AUTO configure)
IP host table configured? (rtrv-ip-host; check for local and remote addresses)
Signalling links (SLKs) and linksets configured correctly? (rept-stat-slk/rept-stat-ls)
IP link configured correctly?
rtrv-ip-lnk
Preferred settings are 100/full duplex on card AND switch - no AUTO configure
IP routing configured?
rtrv-ip-rte
rtrv-ip-card
IP host table configured?
rtrv-ip-host
Check for local and remote addresses.
Signalling links (SLKs) and linksets configured correctly?
rept-stat-slk
rept-stat-ls
Connection does not become established
Card up and stable?
rept-stat-card
Association status?
rept-stat-assoc
Network connectivity?
netstat -I
rept-stat-card:mode=full
Errors (collisions, etc.) on the network interface?
netstat -d 0/1t
Far end reachable?
ping
traceroute
Near end and far end use same SCTP CRC?
netstat –p
sctp/rtrv-sg-opts
Connection bounces and is unstable
Transport stable?
netstat –i
netstat –d
RMIN set too low?
ping
assocrtt
rtrv-assoc
Rule of thumb is above 1.2 * average RTT
AS/PC in route key does not become available or ACTIVE (IPGWx only)
Connection in correct AS?
rtrv-as
Routing key provisioned for AS?
rtrv-appl-rtkey
Network appearance/routing context required and matched?
rtrv-appl-rtkey
ualog
AS/ASP activated at far end?
aslog
ualog
SS7 APC/SAPC and associated route exists in the same network (and group code) as the PC?
rtrv-rte
rtrv-ls
IP destination is not informed of SS7 destination status changes; network management is not working correctly (IPGWx only)
Route key is not provisioned for IPGWx linkset virtual APC, but SS7 route is?
rtrv-rte
rtrv-appl-rtkey/display-=all
AS connections hosted by cards in different linksets/matesets; is the mateset equivalent to linkset?
rtrv-as
rtrv-assoc
rtrv-ls
Traffic not arriving at IP destination or traffic is lost
Route to destination’s PC entered and available?
rept-stat-dstn
Traffic being received/discarded on IP card? IPGWx application has numerous discard reasons!
msucount -l
Are connection(s) congesting?
Is SCTP buffering set correctly for network RTT?
rtrv-assoc
assocrtt,
sctp
Is IPTPS set correctly for IPGWx?
rept-stat-iptps
rtrv-ls
Is an interface set to half-duplex somewhere in the path to the far end, causing excessive retransmissions?
rtrv-ip-lnk
sctp
Traffic not load-balanced properly
Source traffic has uneven SLS distribution?
All cards in linkset or mateset do not host a connection to the IP Application Server(IPGWx only)?
rtrv-assoc
rtrv-as
IPGWx cards in mateset with no established connections have signaling link deactivated to minimize ‘double-hopping’ (IPGWx only)?
rept-stat-card
msucount -l
Link Level Events
IPLIM pass command
linkinfo -l
IPLIMx linkinfo has other interesting options?
-c
-m
IPGWx pass command
ualog
aslog
Both commands have event filtering (link events vs. traffic), so look at options