[cisco-nas] Problem with PPP on 12.3(15) - IPCP UP but no PPP Add Route

Rodrigo rodas at rocketmail.com
Thu Jun 23 15:18:42 EDT 2005


Hi,

I've upgrade my AS5300 IOS to 12.3(15) to solve the missing
Called-Station-Id attribute (and other problems with 12.2T)

Unfortunately 12.3(15) comes with a new problem. After an usual PPP
authentication/negotiation without any error, PPP doesn't "Add Route"
and terminates the session.

Apparently this is only happening with calls that are being
pre-authenticated using dnis. All this authentication process is being
received correctly by the RADIUS server and it's sending PASS replies.

This the final debug with a 12.2T14 (doesn't have this particularly
problem):

Jun 23 19:54:27.827: Vi3 EVT: IPCP Packet 0 0x62335724
Jun 23 19:54:27.827: Vi3 IPCP: I CONFREQ [ACKrcvd] id 7 len 28
Jun 23 19:54:27.827: Vi3 IPCP:    CompressType VJ 15 slots CompressSlotID (0x0206002D0F01)
Jun 23 19:54:27.827: Vi3 IPCP:    Address 195.23.192.176 (0x0306C317C0B0)
Jun 23 19:54:27.827: Vi3 IPCP:    PrimaryDNS 195.23.129.126 (0x8106C317817E)
Jun 23 19:54:27.827: Vi3 IPCP:    SecondaryDNS 194.79.69.222 (0x8306C24F45DE)
Jun 23 19:54:27.827: Vi3 IPCP: O CONFACK [ACKrcvd] id 7 len 28
Jun 23 19:54:27.827: Vi3 IPCP:    CompressType VJ 15 slots CompressSlotID (0x0206002D0F01)
Jun 23 19:54:27.827: Vi3 IPCP:    Address 195.23.192.176 (0x0306C317C0B0)
Jun 23 19:54:27.831: Vi3 IPCP:    PrimaryDNS 195.23.129.126 (0x8106C317817E)
Jun 23 19:54:27.831: Vi3 IPCP:    SecondaryDNS 194.79.69.222 (0x8306C24F45DE)
Jun 23 19:54:27.831: Vi3 IPCP: State is Open
Jun 23 19:54:27.831: Vi3 EVT: IPCP UP 0 0x633AD524
Jun 23 19:54:27.843: Vi3 EVT: Add Route 0 0xC317C0B0
Jun 23 19:54:27.843: Vi3 IPCP: Install route to 195.23.192.176
Jun 23 19:54:27.843: Vi3 IPCP: Add link info for cef entry 195.23.192.176

This is the final debug with 12.3(15):

Jun 23 19:55:00.766: Vi15 EVT: IPCP Packet 0 0x6242C0A0
Jun 23 19:55:00.766: Vi15 IPCP: I CONFREQ [ACKrcvd] id 7 len 28
Jun 23 19:55:00.766: Vi15 IPCP:    CompressType VJ 15 slots CompressSlotID (0x0206002D0F01)
Jun 23 19:55:00.766: Vi15 IPCP:    Address 195.23.192.104 (0x0306C317C068)
Jun 23 19:55:00.766: Vi15 IPCP:    PrimaryDNS 195.23.129.126 (0x8106C317817E)
Jun 23 19:55:00.766: Vi15 IPCP:    SecondaryDNS 194.79.69.222 (0x8306C24F45DE)
Jun 23 19:55:00.766: Vi15 IPCP: O CONFACK [ACKrcvd] id 7 len 28
Jun 23 19:55:00.770: Vi15 IPCP:    CompressType VJ 15 slots CompressSlotID (0x0206002D0F01)
Jun 23 19:55:00.770: Vi15 IPCP:    Address 195.23.192.104 (0x0306C317C068)
Jun 23 19:55:00.770: Vi15 IPCP:    PrimaryDNS 195.23.129.126 (0x8106C317817E)
Jun 23 19:55:00.770: Vi15 IPCP:    SecondaryDNS 194.79.69.222 (0x8306C24F45DE)
Jun 23 19:55:00.770: Vi15 IPCP: State is Open
Jun 23 19:55:00.778: Vi15 EVT: IPCP UP 0 0x62FFAFFC
Jun 23 19:55:00.778: Vi15 EVT: Soft Disc 0 0x00000000
Jun 23 19:55:00.782: Vi15 PPP: Sending Acct Event[Down] id[28A]
Jun 23 19:55:00.782: Vi15 IPCP: State is Closed
Jun 23 19:55:00.782: Vi15 PPP: Block vaccess from being freed [0x50]
Jun 23 19:55:00.782: Vi15 PPP: Unlocked by [0x10] Still Locked by [0x40]
Jun 23 19:55:00.782: Vi15 PPP: Phase is TERMINATING
Jun 23 19:55:00.782: Vi15 LCP: O TERMREQ [Open] id 2 len 4
Jun 23 19:55:00.782: As34 EVT: Hard Disc 0 0x00000000
Jun 23 19:55:00.786: As34 PPP: Sending Acct Event[Down] id[28A]
Jun 23 19:55:00.786: As34 PPP: Phase is TERMINATING
Jun 23 19:55:00.786: As34 LCP: State is Closed
Jun 23 19:55:00.786: As34 PPP: Phase is DOWN
Jun 23 19:55:00.786: As34 PPP SSS: Send DISCONNECT to mgr_hdl[9C0003C0]
Jun 23 19:55:00.794: Vi15 EVT: Cleanup IP 0 0x00000000

Also checking the output of "show ppp queues" we can see that and "IPCP UP"
event doesn't trigger an "Add route" event:

#sh ppp queues 

5 Event Queues
                 size   max      kicks     starts    false   suspends ticks(ms)
 1 PPP Events       0     8      26381      26326       10          0 20
 5 PPP Bind         0     0          0          0        0          0 20
 3 PPP IPCP         0     3        267        267        0          0 20
 2 PPP IP Route     0     2        131        131        0          0 100
 4 PPP Hooks        0     1        268        268        0          0 20

 34 Events
 #  Q Name                 Events   Queued  MaxQueued Suspends  usec/evt  max/evt
 1  1 Setup                    71        0        2        0        35    61
 2* 1 Timer                 25314        0        2        0        27 2008
 3  1 Cstate                  271        0        1        0       126 1653
 4  1 Restart CP              130        0        2        0         6 9
 5    UNREGISTERED
 6  1 Hard Disc                63        0        1        0       895 1592
 7  1 Soft Disc                61        0        1        0      2174 2654
 8  1 Packet                  433        0        4        0       424 2805
 9  1 Auth Packet              71        0        1        0       228 299
10* 3 IPCP Packet             285        0        3        0       339 996
11* 2 Add Route                 5        0        1        0       473 495
12* 2 Remove Route              4        0        1        0       282 288
13* 2 Remove Top                0        0        0        0         0 0
14* 2 Remove Flag               0        0        0        0         0 0
15* 2 Neg Addr Add              0        0        0        0         0 0
16* 2 Neg Addr Remov            0        0        0        0         0 0
17* 2 DHCP Opt Add              0        0        0        0         0 0
18* 2 DHCP Opt Del              0        0        0        0         0 0
19* 2 Cleanup IP               65        0        1        0        15 95
20* 2 IPCP UP                  66        0        1        0       524 5646
21  1 Set LCP Open             63        0        1        0      1393 1744
22  1 Virtualize                4        0        1        0       653 704
23  1 Redirect                 67        0        1        0        26 666
24  1 Forwarded               134        0        1        0       750 1402
25  4 Hook                    268        0        1        0       132 509
26  1 AAA Response            201        0        2        0       940 2491
27  1 Static Bind               0        0        0        0         0 0
28  5 Dynamic Bind              0        0        0        0         0 0
29  1 Bound                     0        0        0        0         0 0
30  1 Virtual Profil           63        0        1        0      1748 2136
31  1 Multilink Up              4        0        1        4         7 7
32  1 Multilink Down            3        0        1        0      2915 2937
33  1 Multilink Clea            0        0        0        0         0 0
34    UNREGISTERED

Pre-processed Requests  LCP:         2  IPCP:         1
PPP Request Failures: 0
PPP Hold Queue Drops: 0
IPCP Skipped - Add Route:         0  AddrAdd:         0  AddrRem: 0
PPP Handles:  alloc[3164] free[2905] outstanding[259]

On the 12.2T:

10  1 Auth Packet              19        0        1        0       243 292
11* 3 IPCP Packet              90        0        2        0       296 1141
12* 2 Add Route                16        0        1        0       571 594
13* 2 Remove Route             12        0        1        0       249 353
14* 2 Remove Top                0        0        0        0         0 0
15* 2 Remove Flag               0        0        0        0         0 0
16* 2 Neg Addr Add              0        0        0        0         0 0
17* 2 Neg Addr Remov            0        0        0        0         0 0
18* 2 IPCP UP                  16        0        1        1      7470 12782
19  1 Set LCP Open             17        0        1        0      1231 1356

Does anyone have any idea about what could be the problem, or have
already run into it?

Best Regards,

--
Rodrigo 


More information about the cisco-nas mailing list