I dont exactly know the answer to this, but I do know that Qwest (a US
RBOC/IXC) requires ppp fragmentation disabled on their NxT-1 offerings,
not only when connecting to their Nortel platform, but their Cisco as well.
HTH
kr
Karnov wrote:
> Hi all,
>
> Can anyone think of a reason why 2 T-1s brought together with MLPPP only works
> when ppp multilink fragmentation is disabled? With "no ppp multilink fragment
> disable", the bundle will only work when 1 T-1 is online (not both). Both T-1
> lines check out OK and can be used individually without any problems.
>
> My router is a 2621XM with 12.3. The ISP has a 7200 series with 12.0, and they
> also have ip cef enabled.
>
> The 2621XM config (has ip cef):
>
> interface Multilink3
> description bonded T-1s
> ip address 1.1.1.218 255.255.255.252
> ip access-group 113 in
> ip verify unicast reverse-path
> ip nat outside
> ip inspect DEFAULT101 out
> no cdp enable
> ppp multilink
> ppp multilink fragment disable
> ppp multilink group 3
> crypto map SDM_CMAP_1
> !
> interface FastEthernet0/0
> description LAN
> ip address 192.168.2.2 255.255.255.0
> ip access-group 100 in
> ip nat inside
> ip route-cache flow
> duplex auto
> speed auto
> no cdp enable
> !
> interface Serial0/0
> description Primary
> no ip address
> encapsulation ppp
> no fair-queue
> no cdp enable
> ppp multilink
> ppp multilink group 3
> !
> interface Serial0/1
> description Secondary
> no ip address
> encapsulation ppp
> no fair-queue
> no cdp enable
> ppp multilink
> ppp multilink group 3
>
> thanks
> Karnov
>
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