! we use two VWIC-2MFT-T1 cards in Cisco 2821 router,
! with 3 T1 from AT&T. We bonded them
! and get total 4.5MB internet bandwidth.
! Following is the actual configuration.
! Hope it helps.
! Please let me know if any questions.
!
no network-clock-participate wic 0
no network-clock-participate wic 1
!
!
voice-card 0
no dspfarm
!
!
controller T1 0/0/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 0/0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 0/1/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 0/1/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
!
!
interface MFR0
no ip address
encapsulation frame-relay IETF
frame-relay lmi-type ansi
!
interface MFR0.801 point-to-point
description WAN
ip address x.x.x.x 255.255.255.252
no cdp enable
frame-relay interface-dlci 801
!
! Internal LAN interface
!
interface GigabitEthernet0/0
ip address x.x.x.x 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0/0:0
no ip address
!
interface Serial0/0/1:0
description Circuit ID: xxxxxxxxxxx
no ip address
encapsulation frame-relay MFR0
no arp frame-relay
frame-relay multilink lid link1
!
interface Serial0/1/0:0
description Circuit ID: xxxxxxxxx
no ip address
encapsulation frame-relay MFR0
no arp frame-relay
frame-relay multilink lid link2
!
interface Serial0/1/1:0
description Circuit ID: xxxxxxxxx
no ip address
encapsulation frame-relay MFR0
no arp frame-relay
frame-relay multilink lid link3
!
interface Serial0/3/0
no ip address
shutdown
!
ip route 0.0.0.0 0.0.0.0 x.x.x.x
!
---------------Configuration End-------------------
Here are some info from Cisco:
==========Quote start===========
Configuring, Verifying, and Debugging Distributed Features
This section covers the show and debug commands that are available to verify and debug each of the distributed features.
Configuring and Verifying dMFR
MFR Sample Configuration
interface MFR1
no ip address
interface MFR1.1 point-to-point
ip address 181.0.0.2 255.255.0.0
frame-relay interface-dlci 16
Note: The MFR interface is like another FR interface and hence supports most of FR configuration.
interface Serial5/0/0/1:0
no ip address
encapsulation frame-relay MFR1
tx-queue-limit 26
interface Serial5/0/0/2:0
no ip address
encapsulation frame-relay MFR1
tx-queue-limit 26
interface Serial5/0/0/3:0
no ip address
encapsulation frame-relay MFR1
Verify MFR Bundle Status on the RP
show frame-relay multilink
Bundle: MFR1, State = up, class = A, fragmentation disabled
BID = MFR1
Bundle links:
Serial5/0/0/3:0, HW state = up, link state = Add_sent, LID = Serial5/0/0/3:0
Serial5/0/0/2:0, HW state = up, link state = Up, LID = Serial5/0/0/2:0
Serial5/0/0/1:0, HW state = up, link state = Up, LID = Serial5/0/0/1:0
This indicates that two interfaces are added correctly, and one interface has not yet negotiated the MLFR LIP messages.
To get more information on the MFR bundle and Member links, issue this command:
show frame-relay multilink mfr1 detailed
Bundle: MFR1, State = up, class = A, fragmentation disabled
BID = MFR1
No. of bundle links = 3, Peer's bundle-id = MFR1
Rx buffer size = 36144, Lost frag timeout = 1000
Bundle links:
Serial5/0/0/3:0, HW state = up, link state = Add_sent, LID = Serial5/0/0/3:0
Cause code = none, Ack timer = 4, Hello timer = 10,
Max retry count = 2, Current count = 0,
Peer LID = , RTT = 0 ms
Statistics:
Add_link sent = 35, Add_link rcv'd = 0,
Add_link ack sent = 0, Add_link ack rcv'd = 0,
Add_link rej sent = 0, Add_link rej rcv'd = 0,
Remove_link sent = 0, Remove_link rcv'd = 0,
Remove_link_ack sent = 0, Remove_link_ack rcv'd = 0,
Hello sent = 0, Hello rcv'd = 0,
Hello_ack sent = 0, Hello_ack rcv'd = 0,
outgoing pak dropped = 0, incoming pak dropped = 0
Serial5/0/0/2:0, HW state = up, link state = Up, LID = Serial5/0/0/2:0
Cause code = none, Ack timer = 4, Hello timer = 10,
Max retry count = 2, Current count = 0,
Peer LID = Serial6/1/0/2:0, RTT = 32 ms
Statistics:
Add_link sent = 0, Add_link rcv'd = 0,
Add_link ack sent = 0, Add_link ack rcv'd = 0,
Add_link rej sent = 0, Add_link rej rcv'd = 0,
Remove_link sent = 0, Remove_link rcv'd = 0,
Remove_link_ack sent = 0, Remove_link_ack rcv'd = 0,
Hello sent = 7851, Hello rcv'd = 7856,
Hello_ack sent = 7856, Hello_ack rcv'd = 7851,
outgoing pak dropped = 0, incoming pak dropped = 0
Serial5/0/0/1:0, HW state = up, link state = Up, LID = Serial5/0/0/1:0
Cause code = none, Ack timer = 4, Hello timer = 10,
Max retry count = 2, Current count = 0,
Peer LID = Serial6/1/0/1:0, RTT = 32 ms
Statistics:
Add_link sent = 0, Add_link rcv'd = 0,
Add_link ack sent = 0, Add_link ack rcv'd = 0,
Add_link rej sent = 0, Add_link rej rcv'd = 0,
Remove_link sent = 0, Remove_link rcv'd = 0,
Remove_link_ack sent = 0, Remove_link_ack rcv'd = 0,
Hello sent = 7851, Hello rcv'd = 7856,
Hello_ack sent = 7856, Hello_ack rcv'd = 7851,
outgoing pak dropped = 0, incoming pak dropped = 0
MFR Debug Commands
These debugs are useful to troubleshoot issues where a link does not get added to the bundle.
debug frame-relay multilink control
Note: When a specific MFR interface or Serial interface is not specified, this enables debug for all MFR links. This can be overwhelming, if the router has a large number of MFR links.
To debug MFR packets that are received at the RP, as well as to debug the MFR control activities, this debug is useful:
debug frame-relay multilink
Note: Under heavy traffic, this can overwhelm the CPU.
Verify dMLFR Bundle Status on the LC
show frame-relay multilink
Note: Currently, this is not available on the LC, but it will soon be added. Until then, use show ppp multilink.
Bundle MFR1, 2 members
bundle 0x62DBDD20, frag_mode 0
tag vectors 0x604E8004 0x604C3628
Bundle hwidb vector 0x6019271C
idb MFR1, vc 0, RSP vc 0
QoS disabled, fastsend (mlp_fastsend), visible_bandwidth 3072
board_encap 0x60577554, hw_if_index 0, pak_to_host 0x0
max_particles 400, mrru 1524, seq_window_size 0x200
working_pak 0x0, working_pak_cache 0x0
una_frag_list 0x0, una_frag_end 0x0, null_link 0
rcved_end_bit 1, is_lost_frag 0, resync_count 0
timeout 0, timer_start 0, timer_running 0, timer_count 0
next_xmit_link Serial0/0:1, member 0x3, congestion 0x3
dmlp_orig_pak_to_host 0x603E7030
dmlp_orig_fastsend 0x6035DBC0
bundle_idb->lc_ip_turbo_fs 0x604A7750
0 lost fragments, 0 reordered, 0 unassigned
0 discarded, 0 lost received
0x0 received sequence, 0x58E sent sequence
DLCI: 16
769719 lost fragments, 22338227 reordered,
0 unassigned
27664 discarded, 27664 lost received
0xF58 received sequence, 0x8DE sent sequence
timer count 767176
Member Link: 2 active
Serial0/0:0, id 0x1, fastsend 0x60191E34, lc_turbo 0x601913AC, PTH 0x603E7030, OOF 0
Serial0/0:1, id 0x2, fastsend 0x60191E34, lc_turbo 0x601913AC, PTH 0x603E7030, OOF 0
=============Quote end==============
[ link (look for MLFR]
