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sra
New Member

PPP Multilink issues

Hello everyone,

I am using a 2600 router for a large scale dialout implementation, we dial our customers through a PRI line. We didnt have multilink enabled until recently, and everything was working fine. We enabled ppp multilink on the Dialer interface and now we have one particular connection that is not working anymore. What happens is that we dial, we connect, PPP works fine, we authenticate, the line comes up, all looks ok, we have the MP bundles created. But nothing goes through. If I just disable multilink, then it's working again. The problem is that I dont have access to the other router so I only can guess their config (which should be what we told them tho).

We used the following to activate muiltilink:

ppp multilink

multilink max-links 2

multilink min-links 1

multilink load-threshold 200 either

load-interval 30

We told them to have the following on their router:

ppp multilink

multilink load-threshold 200 either

load-interval 30

Here are some debug sessions with Multilink OFF (when it works) and ON (when it doesnt).

MP OFF:

========

Mar 20 10:04:12 nas 95015: 6d22h: DSES 5ABF7: Session create

Mar 20 10:04:13 nas 95016: 6d22h: DSES 0x5ABF7: Building dialer map

Mar 20 10:04:13 nas 95017: 6d22h: DSES 0x5ABF7: Next hop name is isdn_SCHNU

Mar 20 10:04:13 nas 95018: 6d22h: Se1/0:15 DDR: rotor dialout [priority]

Mar 20 10:04:13 nas 95019: 6d22h: Se1/0:15 DDR: Dialing cause ip (s=194.99.35.69, d=49.20.0.219)

Mar 20 10:04:13 nas 95020: 6d22h: Se1/0:15 DDR: Attempting to dial xxxxxx

Mar 20 10:04:13 nas 95021: 6d22h: ISDN Se1/0:15: Outgoing call id = 0x8402, dsl 1

Mar 20 10:04:13 nas 95022: 6d22h: ISDN Se1/0:15: Event: Call to xxxx at 64 Kb/s

Mar 20 10:04:13 nas 95023: 6d22h: ISDN Se1/0:15: process_pri_call(): call id 0x8402, number 09112053556, speed 64, call type DATA, redialed? f, csm call? f, pdata? f

Mar 20 10:04:13 nas 95024: 6d22h: callED type/plan overridden by call_decode

Mar 20 10:04:13 nas 95025: 6d22h: did't copy oct3a reason: not CALLER_NUMBER_IE

Mar 20 10:04:14 nas 95026: 6d22h: building outgoing channel id for call nfas_int is 0 len is 0

Mar 20 10:04:14 nas 95027: 6d22h: ISDN Se1/0:15: TX -> SETUP pd = 8 callref = 0x0126

Mar 20 10:04:14 nas 95028: 6d22h: Bearer Capability i = 0x8890

Mar 20 10:04:14 nas 95029: 6d22h: Channel ID i = 0xA9839C

Mar 20 10:04:14 nas 95030: 6d22h: Called Party Number i = 0x81, '09112053556', Plan:ISDN, Type:Unknown

Mar 20 10:04:14 nas 95031: 6d22h: ISDN Se1/0:15: RX <- SETUP_ACK pd = 8 callref = 0x8126

Mar 20 10:04:14 nas 95032: 6d22h: Channel ID i = 0xA9839C

Mar 20 10:04:14 nas 95033: 6d22h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x8402 CALL_SETUP_ACK

Mar 20 10:04:14 nas 95034: 6d22h: ISDN Se1/0:15: PRI Event: 16, bchan = 27, call type = DATA

Mar 20 10:04:14 nas 95035: 6d22h: ISDN Se1/0:15: RX <- CONNECT pd = 8 callref = 0x8126

Mar 20 10:04:14 nas 95036: 6d22h: Date/Time i = 0x0303140A02

Mar 20 10:04:14 nas 95037: 6d22h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x8402 CALL_CONNECT

Mar 20 10:04:14 nas 95038: 6d22h: %LINK-3-UPDOWN: Interface Serial1/0:27, changed state to up

Mar 20 10:04:14 nas 95039: 6d22h: Se1/0:27 PPP: Using dialer call direction

Mar 20 10:04:14 nas 95040: 6d22h: Se1/0:27 PPP: Treating connection as a callout

Mar 20 10:04:14 nas 95041: 6d22h: Se1/0:27 PPP: Phase is ESTABLISHING, Active Open [0 sess, 1 load]

Mar 20 10:04:14 nas 95042: 6d22h: Se1/0:27 PPP: No remote authentication for call-out

Mar 20 10:04:14 nas 95043: 6d22h: Se1/0:27 LCP: O CONFREQ [Closed] id 0 len 10

Mar 20 10:04:14 nas 95044: 6d22h: Se1/0:27 LCP: MagicNumber 0x2D378C10 (0x05062D378C10)

Mar 20 10:04:14 nas 95045: 6d22h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x8402 CALL_PROGRESS

Mar 20 10:04:14 nas 95046: 6d22h: ISDN Se1/0:15: RX <- FACILITY pd = 8 callref = 0x8126

Mar 20 10:04:14 nas 95047: 6d22h: Facility i = 0x91A1130202BB38020122300AA1053003020101820100

Mar 20 10:04:14 nas 95048: 6d22h: - ETSI Supplementary Service, Invoke, AOC-D Charging Units: 1

Mar 20 10:04:14 nas 95049: 6d22h: ISDN Se1/0:15: TX ->

Mar 20 10:04:15 nas 95050: CONNECT_ACK pd = 8 callref = 0x0126

Mar 20 10:04:15 nas 95051: 6d22h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x8402 CALL_FACILITY_INVOKE

Mar 20 10:04:15 nas 95052: 6d22h: Serial1/0:27: AOC-D Recorded Units = 1

Mar 20 10:04:15 nas 95053: 6d22h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x8402 CALL_FACILITY

Mar 20 10:04:15 nas 95054: 6d22h: Se1/0:27 LCP: I CONFREQ [REQsent] id 177 len 32

Mar 20 10:04:15 nas 95055: 6d22h: Se1/0:27 LCP: AuthProto CHAP (0x0305C22305)

Mar 20 10:04:15 nas 95056: 6d22h: Se1/0:27 LCP: MagicNumber 0xD8A4BCAE (0x0506D8A4BCAE)

Mar 20 10:04:15 nas 95057: 6d22h: Se1/0:27 LCP: MRRU 1524 (0x110405F4)

Mar 20 10:04:15 nas 95058: 6d22h: Se1/0:27 LCP: EndpointDisc 1 isdn_SCHNU (0x130D016973646E5F5343484E55)

Mar 20 10:04:15 nas 95059: 6d22h: Se1/0:27 LCP: O CONFREJ [REQsent] id 177 len 8

Mar 20 10:04:15 nas 95060: 6d22h: Se1/0:27 LCP: MRRU 1524 (0x110405F4)

Mar 20 10:04:16 nas 95061: 6d22h: Se1/0:27 LCP: I CONFREQ [REQsent] id 178 len 28

Mar 20 10:04:16 nas 95062: 6d22h: Se1/0:27 LCP: AuthProto CHAP (0x0305C22305)

Mar 20 10:04:16 nas 95063: 6d22h: Se1/0:27 LCP: MagicNumber 0xD8A4BCAE (0x0506D8A4BCAE)

Mar 20 10:04:16 nas 95064: 6d22h: Se1/0:27 LCP: EndpointDisc 1 isdn_SCHNU (0x130D016973646E5F5343484E55)

Mar 20 10:04:16 nas 95065: 6d22h: Se1/0:27 LCP: O CONFACK [REQsent] id 178 len 28

Mar 20 10:04:16 nas 95066: 6d22h: Se1/0:27 LCP: AuthProto CHAP (0x0305C22305)

Mar 20 10:04:16 nas 95067: 6d22h: Se1/0:27 LCP: MagicNumber 0xD8A4BCAE (0x0506D8A4BCAE)

Mar 20 10:04:16 nas 95068: 6d22h: Se1/0:27 LCP: EndpointDisc 1 isdn_SCHNU (0x130D016973646E5F5343484E55)

Mar 20 10:04:16 nas 95069: 6d22h: Se1/0:27 LCP: TIMEout: State ACKsent

Mar 20 10:04:16 nas 95070: 6d22h: Se1/0:27 LCP: O CONFREQ [ACKsent] id 1 len 10

Mar 20 10:04:16 nas 95071: 6d22h: Se1/0:27 LCP: MagicNumber 0x2D378C10 (0x05062D378C10)

Mar 20 10:04:16 nas 95072: 6d22h: Se1/0:27 LCP: I CONFACK [ACKsent] id 1 len 10

Mar 20 10:04:16 nas 95073: 6d22h: Se1/0:27 LCP: MagicNumber 0x2D378C10 (0x05062D378C10)

Mar 20 10:04:16 nas 95074: 6d22h: Se1/0:27 LCP: State is Open

Mar 20 10:04:16 nas 95075: 6d22h: Se1/0:27 PPP: Phase is AUTHENTICATING, by the peer [0 sess, 1 load]

Mar 20 10:04:16 nas 95076: 6d22h: Se1/0:27 CHAP: I CHALLENGE id 117 len 31 from "xx"

Mar 20 10:04:16 nas 95077: 6d22h: Se1/0:27 CHAP: Using cached name from dialout xx

Mar 20 10:04:16 nas 95078: 6d22h: Se1/0:27 CHAP: O RESPONSE id 117 len 24 from "xx"

Mar 20 10:04:16 nas 95079: 6d22h: Se1/0:27 CHAP: I SUCCESS id 117 len 4

Mar 20 10:04:16 nas 95080: 6d22h: Se1/0:27 PPP: Phase is UP [0 sess, 1 load]

Mar 20 10:04:16 nas 95081: 6d22h: Se1/0:27 IPCP: O CONFREQ [Closed] id 38 len 10

Mar 20 10:04:16 nas 95082: 6d22h: Se1/0:27 IPCP: Address 1.1.1.1 (0x030601010101)

Mar 20 10:04:16 nas 95083: 6d22h: Se1/0:27 IPCP: I CONFREQ [REQsent] id 240 len 10

Mar 20 10:04:16 nas 95084: 6d22h: Se1/0:27 IPCP: Address 192.168.7.1 (0x0306C0A80701)

Mar 20 10:04:17 nas 95085: 6d22h: Se1/0:27 AAA/AUTHOR/IPCP: Start. Her address 192.168.7.1, we want 192.168.7.1

Mar 20 10:04:17 nas 95086: 6d22h: Se1/0:27 AAA/AUTHOR/IPCP: Done. Her address 192.168.7.1, we want 192.168.7.1

Mar 20 10:04:17 nas 95087: 6d22h: Se1/0:27 IPCP: O CONFACK [REQsent] id 240 len 10

Mar 20 10:04:17 nas 95088: 6d22h: Se1/0:27 IPCP: Address 192.168.7.1 (0x0306C0A80701)

Mar 20 10:04:17 nas 95089: 6d22h: Se1/0:27 CDPCP: I CONFREQ [Not negotiated] id 18 len 4

Mar 20 10:04:17 nas 95090: 6d22h: Se1/0:27 LCP: O PROTREJ [Open] id 2 len 10 protocol CDPCP (0x820701120004)

Mar 20 10:04:17 nas 95091: 6d22h: Se1/0:27 IPCP: I CONFACK [ACKsent] id 38 len 10

Mar 20 10:04:17 nas 95092: 6d22h: Se1/0:27 IPCP: Address 1.1.1.1 (0x030601010101)

Mar 20 10:04:17 nas 95093: 6d22h: Se1/0:27 IPCP: State is Open

Mar 20 10:04:17 nas 95094: 6d22h: Se1/0:27 DDR: dialer protocol up

Mar 20 10:04:17 nas 95095: 6d22h: Se1/0:27: Call connected, 1 packets unqueued, 0 transmitted, 1 discarded

Mar 20 10:04:17 nas 95096: 6d22h: Di2 IPCP: Install route to 192.168.7.1

Mar 20 10:04:18 nas 95097: 6d22h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0:27, changed state to up

MP ON:

=======

Mar 19 13:20:37 nas 74764: 6d01h: DSES 4F3F8: Session create

Mar 19 13:20:37 nas 74765: 6d01h: DSES 0x4F3F8: Building dialer map

Mar 19 13:20:37 nas 74766: 6d01h: DSES 0x4F3F8: Next hop name is isdn_SCHNU

Mar 19 13:20:37 nas 74767: 6d01h: Se1/0:15 DDR: rotor dialout [priority]

Mar 19 13:20:37 nas 74768: 6d01h: Se1/0:15 DDR: Dialing cause ip (s=194.99.35.69, d=49.20.0.219)

Mar 19 13:20:37 nas 74769: 6d01h: Se1/0:15 DDR: Attempting to dial 09112053556

Mar 19 13:20:37 nas 74770: 6d01h: ISDN Se1/0:15: Outgoing call id = 0x838C, dsl 1

Mar 19 13:20:37 nas 74771: 6d01h: ISDN Se1/0:15: Event: Call to xxxx at 64 Kb/s

Mar 19 13:20:37 nas 74772: 6d01h: ISDN Se1/0:15: process_pri_call(): call id 0x838C, number xxxxxxxxx, speed 64, call type DATA, redialed? f, csm call? f, pdata? f

Mar 19 13:20:38 nas 74773: 6d01h: callED type/plan overridden by call_decode

Mar 19 13:20:38 nas 74774: 6d01h: did't copy oct3a reason: not CALLER_NUMBER_IE

Mar 19 13:20:38 nas 74775: 6d01h: building outgoing channel id for call nfas_int is 0 len is 0

Mar 19 13:20:38 nas 74776: 6d01h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x838C CALL_SETUP_ACK

Mar 19 13:20:38 nas 74777: 6d01h: ISDN Se1/0:15: PRI Event: 16, bchan = 29, call type = DATA

Mar 19 13:20:38 nas 74778: 6d01h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x838C CALL_CONNECT

Mar 19 13:20:38 nas 74779: 6d01h: %LINK-3-UPDOWN: Interface Serial1/0:29, changed state to up

Mar 19 13:20:38 nas 74780: 6d01h: Se1/0:29 PPP: Using dialer call direction

Mar 19 13:20:38 nas 74781: 6d01h: Se1/0:29 PPP: Treating connection as a callout

Mar 19 13:20:38 nas 74782: 6d01h: Se1/0:29 PPP: Phase is ESTABLISHING, Active Open [0 sess, 1 load]

Mar 19 13:20:38 nas 74783: 6d01h: Se1/0:29 PPP: No remote authentication for call-out

Mar 19 13:20:38 nas 74784: 6d01h: Se1/0:29 CHAP: Using cached name from dialout rts

Mar 19 13:20:38 nas 74785: 6d01h: Se1/0:29 LCP: O CONFREQ [Closed] id 140 len 20

Mar 19 13:20:38 nas 74786: 6d01h: Se1/0:29 LCP: MagicNumber 0x28C4ED60 (0x050628C4ED60)

Mar 19 13:20:38 nas 74787: 6d01h: Se1/0:29 LCP: MRRU 1524 (0x110405F4)

Mar 19 13:20:38 nas 74788: 6d01h: Se1/0:29 LCP: EndpointDisc 1 rts (0x130601727473)

Mar 19 13:20:38 nas 74789: 6d01h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x838C CALL_PROGRESS

Mar 19 13:20:38 nas 74790: 6d01h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x838C CALL_FACILITY_INVOKE

Mar 19 13:20:39 nas 74791: 6d01h: ISDN Se1/0:15: LIF_EVENT: ces/callid 1/0x838C CALL_FACILITY

Mar 19 13:20:40 nas 74792: 6d01h: Se1/0:29 LCP: I CONFREQ [REQsent] id 127 len 32

Mar 19 13:20:40 nas 74793: 6d01h: Se1/0:29 LCP: AuthProto CHAP (0x0305C22305)

Mar 19 13:20:40 nas 74794: 6d01h: Se1/0:29 LCP: MagicNumber 0xD4321CE6 (0x0506D4321CE6)

Mar 19 13:20:40 nas 74795: 6d01h: Se1/0:29 LCP: MRRU 1524 (0x110405F4)

Mar 19 13:20:40 nas 74796: 6d01h: Se1/0:29 LCP: EndpointDisc 1 isdn_SCHNU (0x130D016973646E5F5343484E55)

Mar 19 13:20:40 nas 74797: 6d01h: Se1/0:29 LCP: O CONFACK [REQsent] id 127 len 32

Mar 19 13:20:40 nas 74798: 6d01h: Se1/0:29 LCP: AuthProto CHAP (0x0305C22305)

Mar 19 13:20:40 nas 74799: 6d01h: Se1/0:29 LCP: MagicNumber 0xD4321CE6 (0x0506D4321CE6)

Mar 19 13:20:40 nas 74800: 6d01h: Se1/0:29 LCP: MRRU 1524 (0x110405F4)

Mar 19 13:20:40 nas 74801: 6d01h: Se1/0:29 LCP: EndpointDisc 1 isdn_SCHNU (0x130D016973646E5F5343484E55)

Mar 19 13:20:40 nas 74802: 6d01h: Se1/0:29 LCP: TIMEout: State ACKsent

Mar 19 13:20:40 nas 74803: 6d01h: Se1/0:29 LCP: O CONFREQ [ACKsent] id 141 len 20

Mar 19 13:20:40 nas 74804: 6d01h: Se1/0:29 LCP: MagicNumber 0x28C4ED60 (0x050628C4ED60)

Mar 19 13:20:40 nas 74805: 6d01h: Se1/0:29 LCP: MRRU 1524 (0x110405F4)

Mar 19 13:20:40 nas 74806: 6d01h: Se1/0:29 LCP: EndpointDisc 1 rts (0x130601727473)

Mar 19 13:20:40 nas 74807: 6d01h: Se1/0:29 LCP: I CONFACK [ACKsent] id 141 len 20

Mar 19 13:20:40 nas 74808: 6d01h: Se1/0:29 LCP: MagicNumber 0x28C4ED60 (0x050628C4ED60)

Mar 19 13:20:40 nas 74809: 6d01h: Se1/0:29 LCP: MRRU 1524 (0x110405F4)

Mar 19 13:20:40 nas 74810: 6d01h: Se1/0:29 LCP: EndpointDisc 1 rts (0x130601727473)

Mar 19 13:20:40 nas 74811: 6d01h: Se1/0:29 LCP: State is Open

Mar 19 13:20:40 nas 74812: 6d01h: Se1/0:29 PPP: Phase is AUTHENTICATING, by the peer [0 sess, 0 load]

Mar 19 13:20:40 nas 74813: 6d01h: Se1/0:29 CHAP: I CHALLENGE id 94 len 31 from "isdn_SCHNU"

Mar 19 13:20:41 nas 74814: 6d01h: Se1/0:29 CHAP: Using cached name from dialout rts

Mar 19 13:20:41 nas 74815: 6d01h: Se1/0:29 CHAP: O RESPONSE id 94 len 24 from "rts"

Mar 19 13:20:41 nas 74816: 6d01h: Se1/0:29 CHAP: I SUCCESS id 94 len 4

Mar 19 13:20:41 nas 74817: 6d01h: Se1/0:29 MLP: Request add link to bundle

Mar 19 13:20:41 nas 74818: 6d01h: Se1/0:29 PPP: Phase is VIRTUALIZED [0 sess, 0 load]

Mar 19 13:20:41 nas 74819: 6d01h: Se1/0:29 MLP: Adding link to bundle

Mar 19 13:20:41 nas 74820: 6d01h: Vi7 PPP: Phase is DOWN, Setup [0 sess, 0 load]

Mar 19 13:20:41 nas 74821: 6d01h: Vi7 PPP: No remote authentication for call-out

Mar 19 13:20:41 nas 74822: 6d01h: Vi7 MLP: Added to huntgroup Di2

Mar 19 13:20:41 nas 74823: 6d01h: Vi7 MLP: Clone from Di2

Mar 19 13:20:41 nas 74824: 6d01h: %LINK-3-UPDOWN: Interface Virtual-Access7, changed state to up

Mar 19 13:20:41 nas 74825: 6d01h: Vi7 DDR: Dialer statechange to up

Mar 19 13:20:41 nas 74826: 6d01h: Vi7 DDR: Dialer call has been placed

Mar 19 13:20:41 nas 74827: 6d01h: Vi7 PPP: Using dialer call direction

Mar 19 13:20:41 nas 74828: 6d01h: Vi7 PPP: Treating connection as a callout

Mar 19 13:20:41 nas 74829: 6d01h: Vi7 PPP: Phase is ESTABLISHING, Active Open [0 sess, 0 load]

Mar 19 13:20:41 nas 74830: 6d01h: Vi7 PPP: No remote authentication for call-out

Mar 19 13:20:41 nas 74831: 6d01h: Vi7 LCP: O CONFREQ [Closed] id 1 len 20

Mar 19 13:20:41 nas 74832: 6d01h: Vi7 LCP: MagicNumber 0x28C4F58A (0x050628C4F58A)

Mar 19 13:20:41 nas 74833: 6d01h: Vi7 LCP: MRRU 1524 (0x110405F4)

Mar 19 13:20:41 nas 74834: 6d01h: Vi7 LCP: EndpointDisc 1 nas (0x1306016E6173)

Mar 19 13:20:41 nas 74835: 6d01h: Vi7 PPP: Phase is UP [0 sess, 0 load]

Mar 19 13:20:41 nas 74836: 6d01h: Vi7 IPCP: O CONFREQ [Closed] id 1 len 10

Mar 19 13:20:41 nas 74837: 6d01h: Vi7 IPCP: Address 1.1.1.1 (0x030601010101)

Mar 19 13:20:41 nas 74838: 6d01h: Vi7 MLP: Added first link Se1/0:29 to bundle isdn_SCHNU

Mar 19 13:20:42 nas 74839: 6d01h: Vi7 IPCP: I CONFREQ [REQsent] id 1 len 10

Mar 19 13:20:42 nas 74840: 6d01h: Vi7 IPCP: Address 192.168.7.1 (0x0306C0A80701)

Mar 19 13:20:42 nas 74841: 6d01h: Vi7 AAA/AUTHOR/IPCP: Start. Her address 192.168.7.1, we want 192.168.7.1

Mar 19 13:20:42 nas 74842: 6d01h: Vi7 AAA/AUTHOR/IPCP: Done. Her address 192.168.7.1, we want 192.168.7.1

Mar 19 13:20:42 nas 74843: 6d01h: Vi7 IPCP: O CONFACK [REQsent] id 1 len 10

Mar 19 13:20:42 nas 74844: 6d01h: Vi7 IPCP: Address 192.168.7.1 (0x0306C0A80701)

Mar 19 13:20:42 nas 74845: 6d01h: Vi7 CDPCP: I CONFREQ [Not negotiated] id 1 len 4

Mar 19 13:20:42 nas 74846: 6d01h: Vi7 LCP: O PROTREJ [Open] id 2 len 10 protocol CDPCP (0x820701010004)

Mar 19 13:20:42 nas 74847: 6d01h: Vi7 IPCP: I CONFACK [ACKsent] id 1 len 10

Mar 19 13:20:42 nas 74848: 6d01h: Vi7 IPCP: Address 1.1.1.1 (0x030601010101)

Mar 19 13:20:42 nas 74849: 6d01h: Vi7 IPCP: State is Open

Mar 19 13:20:42 nas 74850: 6d01h: Vi7 DDR: dialer protocol up

Mar 19 13:20:42 nas 74851: 6d01h: Vi7: Call connected, 1 packets unqueued, 0 transmitted, 1 discarded

Mar 19 13:20:42 nas 74852: 6d01h: Di2 IPCP: Install route to 192.168.7.1

Mar 19 13:20:42 nas 74853: 6d01h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0:29, changed state to up

Mar 19 13:20:42 nas 74854: 6d01h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access7, changed state to up

Mar 19 13:20:45 nas 74855: 6d01h: %ISDN-6-CONNECT: Interface Serial1/0:29 is now connected to xxxxxx isdn_SCHNU

Any idea what might be the cause ? What could be wrong on the other side ? I have to mention that we use the same dialer to connect to lots of other customers, for which Multilink works fine.

  • Other Network Infrastructure Subjects
7 REPLIES
Cisco Employee

Re: PPP Multilink issues

We do need to see the config from the router receiving the call with the same debug that you have on this router.

Now you can have them use "virtual-template" config for multilink. Virtual profiles is the better way to control the multilink connection. Pl. visit following url for that

http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/113ed_cr/dial_c/dcprt7/dcvprof.htm

New Member

Re: PPP Multilink issues

Check the other side IOS release, I had the same problem with 12.0(5) (I'm not sure this was the release with the bug), anyway ask the other side responsible to change the IOS version

Hope this help...

Silver

Re: PPP Multilink issues

It will be interesting to see the same debugs on the other end too (debugs on both ends together)....but understand that you do not have control on the remote end router to do that, can we atleast get the config (sh run) for the remote?

Would like to see the difference between the site that does not work & that works. There are some known issues with Fast switching enabled, a quick config/ version check will help.

Thanks, Mak.

sra
New Member

Re: PPP Multilink issues

The customer is kinda reluctant to give his config away but I will try to push things a bit because this is weird. Will post back here as soon as I have news.

New Member

Re: PPP Multilink issues

I seem to have the same problem. I'm using EasyIP to call my ISP (who has a Cisco access server) and everything works fine with 1 B channel.

If I configure it for 2, as soon as I get the Connected message, name resolution dies. (www.cisco.com can't be resolved) However, if I punch in the IP address of a site, it works fine.

If for some reason the 2nd B-channel disconnects, name resolution comes back.

2610 router w/ IOS 12.1

Cisco Employee

Re: PPP Multilink issues

Scot, your problem seems different than this. In your case only DNS stops working. Anyway, since you mentioned you are running 12.1 , I hope you are running something after 12.1(3.3) since CSCdr45407 ( cannot ping between routers when both channels are up) was fixed in 12.1(3.3) release. I would suggest to check the IOS in this one too and make sure it has CSCdr45407 integrated.

~Zulfi

New Member

Re: PPP Multilink issues

Hi,

Yup, I'm running 12.1(10)

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