Hello,
An incoming call received on an x25 serial interface is not routed over XOT as expected. The reason seems to be because the CUD contains a null NLPID i.e. the first byte is =00 in hex. Any other incoming call with a different CUD is routed over XOT. Below are the trace and the router configuration:
1.Here is the debug trace:
Router2#debug x25 int ser 1/6
X.25 packet debugging is on
X.25 debug output restricted to interface Serial1/6
*Apr 30 11:49:38: Serial1/6: X.25 I R1 Call (31) 8 lci 0
*Apr 30 11:49:38: From (9): 120030153 To (2): 44
*Apr 30 11:49:38: Facilities: (4)
*Apr 30 11:49:38: Behavior flags:
*Apr 30 11:49:38: no Reverse charging, no Fast select
*Apr 30 11:49:38: Closed User Group (basic): 00
*Apr 30 11:49:38: Call User Data (16): 0x00000000 (x25-multiprotocol)
*Apr 30 11:49:38: Address map failed
*Apr 30 11:49:38: Serial1/6: X.25 O R1 Clear (5) 8 lci 0
*Apr 30 11:49:38: Cause 0, Diag 68 (DTE originated/Invalid source
address)
*Apr 30 11:49:38: Serial1/6: X.25 I R1 Clear Confirm (3) 8 lci 0
2.Here is the router configuration:
version 12.1
no service single-slot-reload-enable
service pad to-xot
service pad from-xot
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime localtime
service timestamps log datetime localtime
no service password-encryption
!
hostname Router2
!
boot system flash slot0:c3620-is-mz.121-5.T
logging buffered 65536 debugging
logging rate-limit console 10 except errors
enable password ......
!
memory-size iomem 15
ip subnet-zero
!
no ip finger
no ip domain-lookup
!
x25 routing
call rsvp-sync
!
source-bridge ring-group 999
dlsw local-peer
dlsw bridge-group 10
interface Ethernet0/0
ip address 172.18.1.32 255.255.255.0
full-duplex
bridge-group 10
!
interface Ethernet0/0
ip address 172.18.1.32 255.255.255.0
full-duplex
bridge-group 10
!
interface Serial1/6
description XM10008
no ip address
encapsulation x25
x25 address 20030055
x25 alias .*
x25 htc 32
x25 win 3
x25 wout 3
x25 accept-reverse
x25 suppress-calling-address
x25 subscribe lc0 two-way
x25 pad-access
lapb T4 5
qllc dlsw vmacaddr 4000.3622.6001 30 partner 4000.4468.0040
!
ip classless
ip route 0.0.0.0 0.0.0.0 172.18.1.251
ip route 172.18.1.0 255.255.255.0 172.18.1.223
no ip http server
!
snmp-server community public RO
!
x25 route .* source ^20030055$ substitute-source \0 interface Serial1/6
x25 route .* input-interface Serial1/6 substitute-dest 20030055\0 xot 172.18.1.253 xot-keepalive-period 20 xot-keepalive-tries 3
!
bridge 10 protocol ieee
!
dial-peer cor custom
!
line con 0
exec-timeout 0 0
logging synchronous
login
transport input none
line aux 0
line vty 0 4
Question: what to do to get the incoming call with a CUD=00 to be routed over XOT?
Regards.
