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Enthusiast

cisco886 with IOS 15.1T and "ppp multilink"

Hello,

we're testing a couple of new low-end cisco devices to use at customer sites and found out that the new Cisco886 has no support of PPP multilink, it simply means eg, that we can't use both ISDN chanells.

here is the short output:


yourname# sh ver
Cisco IOS Software, C880 Software (C880DATA-UNIVERSALK9-M), Version 15.1(3)T, RELEASE SOFTWARE ( c1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Tue 16-Nov-10 04:53 by prod_rel_team

ROM: System Bootstrap, Version 12.4(22r)YB5, RELEASE SOFTWARE (fc1)

yourname uptime is 1 minute
System returned to ROM by reload at 15:21:37 UTC Wed Mar 2 2011 System image file is "flash:c880data-universalk9-mz.151-3.T.bin"
Last reload type: Normal Reload
Last reload reason: Reload Command

!

interface BRI0
no ip address
encapsulation hdlc
dialer pool-member 10
isdn switch-type basic-net3
isdn termination multidrop
!

interface Dialer10
mtu 1456
ip address negotiated
no ip redirects
no ip proxy-arp
encapsulation ppp
load-interval 30
dialer pool 10
dialer idle-timeout 10
dialer string 080099999
dialer load-threshold 30 outbound
no cdp enable



yourname(config)#int di 10
yourname(config-if)#ppp ?
  accm              Set initial Async Control Character Map
  accounting        Set PPP network accounting method
  acfc              Options for HDLC Address & Control Field Compression
  authentication    Set PPP link authentication method
  authorization     Set PPP network authorization method
  bcp               Set BCP negotiation options
  bridge            Enable PPP bridge translation
  callback          Set PPP link callback option
  caller            Caller option when no CLID is available
  chap              Set CHAP authentication parameters
  direction         Override default PPP direction
  disconnect-cause  Set disconnect-cause code
  dnis              Authentication via DNIS before LCP
  eap               Set EAP authentication parameters
  encrypt           Enable PPP encryption
  ipcp              Set IPCP negotiation options
  iphc              Set IPCP Header Compression control options
  lcp               PPP LCP configuration
  link              Set miscellaneous link parameters
  loopback          PPP loopback options
  max-bad-auth      Allow multiple authentication failures
  max-configure     Number of conf-reqs sent before assuming peer is unable to
                    respond
  max-failure       Number of conf-naks sent before assuming configuration is
                    not converging
  max-terminate     Number of term-reqs sent before assuming peer is unable to
                    respond
  ms-chap           Set MS-CHAP authentication parameters
  ms-chap-v2        Set MS-CHAP-V2 authentication parameters
  mtu               PPP MTU configuration
  ncp               Set NCP link parameters
  pap               Set PAP authentication parameters
  pfc               Options for Protocol Field Compression
  quality           Set parameters related to Link Quality Monitoring (LQM)
  timeout           Set PPP timeout parameters

yourname(config-if)#ppp multilink
                                           ^
% Invalid input detected at '^' marker.

we're now in contact with our support partner, but they haven't opened a TAC case yet, they are trying to convince us that this is a normal. Command reference says that (of course) the command "ppp multilink" exists and there is no any hardware restrictions or limitations.

Is it a bug or a feature of cisco886 ?

6 REPLIES 6
Highlighted
Advocate

can you configure "ppp multilink" under the BRI0 interface?

Highlighted

Hello Andrew,

andrew.prince@monster.com

can you configure "ppp multilink" under the BRI0 interface?

no, BRI0 doesn't have such command as well:

interface BRI0
no ip address
encapsulation ppp
dialer pool-member 10
isdn switch-type basic-net3
isdn termination multidrop

yourname(config-if)#ppp ?
  accm              Set initial Async Control Character Map
  accounting        Set PPP network accounting method
  acfc              Options for HDLC Address & Control Field Compression
  authentication    Set PPP link authentication method
  authorization     Set PPP network authorization method
  bcp               Set BCP negotiation options
  bridge            Enable PPP bridge translation
  callback          Set PPP link callback option
  caller            Caller option when no CLID is available
  chap              Set CHAP authentication parameters
  direction         Override default PPP direction
  disconnect-cause  Set disconnect-cause code
  dnis              Authentication via DNIS before LCP
  eap               Set EAP authentication parameters
  encrypt           Enable PPP encryption
  ipcp              Set IPCP negotiation options
  iphc              Set IPCP Header Compression control options
  lcp               PPP LCP configuration
  link              Set miscellaneous link parameters
  loopback          PPP loopback options
  max-bad-auth      Allow multiple authentication failures
  max-configure     Number of conf-reqs sent before assuming peer is unable to
                    respond
  max-failure       Number of conf-naks sent before assuming configuration is
                    not converging
  max-terminate     Number of term-reqs sent before assuming peer is unable to
                    respond
  ms-chap           Set MS-CHAP authentication parameters
  ms-chap-v2        Set MS-CHAP-V2 authentication parameters
  ncp               Set NCP link parameters
  pap               Set PAP authentication parameters
  pfc               Options for Protocol Field Compression
  quality           Set parameters related to Link Quality Monitoring (LQM)
  timeout           Set PPP timeout parameters

yourname(config-if)#ppp   multilink
                                            ^
% Invalid input detected at '^' marker.

yourname(config-if)#

Highlighted

Then I would say that the feature is not available - but you can confirm using the Feature Navigator

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

HTH>

Highlighted

Hello,

"ppp multilink" is not available als feature for ISDN interface? It simply can't be.

I've checked allready  before all Cisco  sources and MLPPP is listed as a feature which is available on all platforms. I've tested 881 and 886 with all possible IOS's (12.4T as well)  already and on both platform the same problem.

Highlighted
Enthusiast

Hello,

Did nobody face such a bug? It's really strange! the cisco800 series is quite popular and there are a lot of routers around the world.

I don't know yet if the case was opened by TAC, service partner didn'T update me yet.

Highlighted

I know this is very old but I ran into the same issue and searched this forum.

Solution is to upgrade license to Advanced IP Services, works fine.

Hope this helps others ...

Michael

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Michael Please rate all helpful posts
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