--begin ciscomoderator note-- The following post has been edited to remove potentially confidential information. Please refrain from posting confidential information on the site to reduce security risks to your network. -- end ciscomoderator note --
Hi there,
I am trying to configure a ML-PPP setup between a Cisco 1721 CPE (thru a Redback as the LAC) to a Cisco 2621XM acting as the LNS.
I have managed to get the multilink connection to establish, however when I try to run traffic through the bundle I get a lot of MLP out-of-sequence errors. As follows:
00:39:01: Mu1 MLP: Lost fragment 167 in 'nms-cll' (all links have rcvd higher seq#)
00:39:01: Mu1 MLP: Received lost fragment seq 168, expecting 16D in 'nms-cll'
00:39:01: Mu1 MLP: Out of sync with peer, resyncing to last rcvd seq# (000168)
00:39:01: Mu1 MLP: Unusual jump in seq number, from 00016D to 000169
00:39:01: Mu1 MLP: Lost fragment 169 in 'nms-cll' (all links have rcvd higher seq#)
00:39:01: Mu1 MLP: Lost fragment 16B in 'nms-cll' (all links have rcvd higher seq#)
Does any know how to overcome this problem? I have tried to increase the 'ppp multilink fragment delay' variable but it doesn't seems to work.
One WIC is a ADSL and the other is G.SHDSL.
I thought ML-PPP was suppose to have the capability of handle different media types (ie, latency, bandwidth and so on)?
Here are the config at the CPE (Cisco 1721):
multilink virtual-template 1
!
!
!
interface Multilink1
ip address negotiated
ip nat outside
no cdp enable
ppp direction callout
ppp multilink
ppp multilink fragment-delay 1000
ppp multilink interleave
no ppp multilink fragmentation
multilink-group 1
!
interface ATM0
bandwidth 2000
no ip address
load-interval 60
shutdown
no atm ilmi-keepalive
dsl equipment-type CPE
dsl operating-mode GSHDSL symmetric annex B
dsl linerate AUTO
!
interface ATM0.38 point-to-point
pvc shdsl-line 0/38
oam-pvc manage
protocol ppp Virtual-Template1
!
!
interface ATM1
no ip address
load-interval 60
shutdown
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM1.38 point-to-point
pvc adsl-line 0/38
oam-pvc manage
protocol ppp Virtual-Template1
!
!
interface Virtual-Template1
no ip address
ppp authentication chap callin
ppp chap hostname xxxxxxxxxxxxxx
ppp chap password 7 xxxxxxxxxxxxxx
ppp direction callout
ppp multilink
ppp multilink endpoint hostname
multilink min-links 2
multilink-group 1
!
ip nat inside source list 10 interface Multilink1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Multilink1
===============================================
Here are the config at the LNS (Cisco 2621XM):
!
username xxxxxxxxxxxxxx password 7 xxxxxxxxxxxxxx
username user2@test.bddsl.com password 7 xxxxxxxxxxxxxx
!
vpdn enable
!
vpdn-group 1
accept-dialin
protocol l2tp
virtual-template 1
terminate-from hostname xxxxxxxxxxxxxxx
local name bulldog_lns_01
lcp renegotiation always
l2tp tunnel password 7 xxxxxxxxxxxxxx
source-ip 192.168.7.1
!
interface Virtual-Template1
ip address xxx.xxx.xxx.201 255.255.255.248
peer default ip address pool lns_pool_public
ppp authentication chap
ppp ipcp dns xxx.xxx.xxx.2 xxx.xxx.xxx.3
ppp multilink
ppp multilink fragment-delay 1000
ppp multilink interleave
ppp multilink endpoint hostname
multilink min-links 1
no ppp multilink fragmentation
!
ip local pool lns_pool_public xxx.xxx.xxx.202 xxx.xxx.xxx.207
