09-30-2008 02:04 PM - edited 03-03-2019 11:44 PM
We just purchased 2 bonded T1 lines via Verizon/MCI and I am looking for an example config. The Router has two WIC-1DSU-T1-V2 cards and two FastEthernet ports.
This connection uses Frame-Replay encapsulation.
Your help is appreciated.
10-01-2008 10:33 AM
Try this...
!
interface Multilink1
ip address
peer default ip address
ppp chap hostname <> ---> optional
ppp multilink
ppp multilink fragment disable
ppp multilink group 1
!
bond the two serial interfaces via the ML-PPP bundle.
!
interface Serialx/x/x
description ML-PPP
no ip address
encapsulation frame-relay
no ip mroute-cache
no fair-queue
no cdp enable
ppp chap hostname <>
ppp multilink
ppp multilink group 1
frame-relay interface-dlci
!
interface Serialx/x/x
description ML-PPP
no ip address
encapsulation frame-relay
no ip mroute-cache
no fair-queue
no cdp enable
ppp chap hostname <>
ppp multilink
ppp multilink group 1
frame-relay interface-dlci
!
10-01-2008 10:50 AM
I tried that before and it didn't work. I think what I need is the setup a MFR interface. Do you have an example of that?
10-01-2008 11:45 AM
Hello Matt,
use the following doc
explains multilink frame-relay FRF16
note:
do not disable frame-relay inverse-arp on member links this created a problem in another thread
Hope to help
Giuseppe
10-01-2008 12:30 PM
Here is the config I currently have that does not work. Are you saying "no arp frame-relay" command in the Serial interfaces I should enable?
interface MFR1
mtu 4470
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay IETF
no ip route-cache cef
no ip mroute-cache
load-interval 30
no arp frame-relay
frame-relay multilink bid to gw
frame-relay lmi-type ansi
!
interface MFR1.500 point-to-point
ip address
no ip redirects
no ip proxy-arp
no cdp enable
no arp frame-relay
!
interface FastEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0/0$
ip vrf forwarding FE00
ip address
duplex full
speed auto
!
interface Serial0/0/0
mtu 4470
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay MFR1
load-interval 30
service-module t1 timeslots 1-24
no arp frame-relay
!
interface Serial0/1/0
mtu 4470
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay MFR1
load-interval 30
service-module t1 timeslots 1-24
no arp frame-relay
10-01-2008 12:39 PM
Hello Matt,
on each serial interface
int ser0/x/y
arp frame-relay
int MFR1
arp frame-rel
Hope to help
Giuseppe
10-03-2008 11:35 AM
I tried that using the above config and all interfaces came up OK and no alarm lights, but no traffic was passing. Verizon has not been any help. They send me the below config, but it is not setup for bonding 2 T1's. Can you help manipulate this for bonding?
!
version 12.1 ! IOS Version
service timestamps debug uptime ! Requests timestamp of logs
no service password-encryption ! No password encryption
! ! Off by default
hostname ROUTER
!
ip subnet-zero ! Allows the router to use the first subnet of a block
ip cef ! Enables Cisco express forwarding
no ip finger ! Disables finger on the router (UNIX Comand)
!
interface FastEthernet0/0 ! Customer Interior Interface
ip address XX.XX.XX.XX 255.255.255.0 ! Interior IP Address
no ip mroute-cache ! Disables multicast fast
switching
no keepalive ! Disables Ethernet keepalives
speed 100 ! Locks down port speed
full-duplex ! Locks down duplex mode
no cdp enable ! Disable Cisco Discovery Protocol
!
interface Serial0/0 ! Customer WAN interface
no ip address
encapsulation frame-relay IETF ! Sets interface encapsulation
service-module t1 timeslots 1-24 ! Sets timeslots (channels of T1)
service-module t1 framing esf ! Sets T1 Framing
service-module t1 linecode b8zs ! Sets T1 Linecode
service-module t1 clock source internal ! Sets clocking to Internal
frame-relay lmi-type ansi ! Set LMI type
load-interval 30 ! Sets length of time load
calculations
no fair-queue ! Enable Fair Queuing on an Interface
bandwidth ! Bandwidth. Just a description
!
interface Serial0/0.1 point-to-point ! Enables sub-interface
ip addresss XX.XX.XX.XX 255.255.255.252 ! IP address of WAN interface
frame-relay interface-dlci 500 IETF ! Sets DLCI and Encapsulation
no ip redirects ! Disables redirect messages from WAN INT.
no ip proxy-arp ! Disables ARP per RFC1027
no arp frame-relay ! Disables ARP for the interface
no cdp enable ! Disable Cisco Discovery Protocol
bandwidth ! Bandwidth. Just a description
!
ip route 0.0.0.0 0.0.0.0 Serial0/0.1 ! Sets default gateway of last esort
ip classless ! Enable classless routing behavior
no cdp run ! Disable Cisco Discovery Protocol
no ip http server ! Disables HTTP server feature (for security)
!
ip domain-name ALTER.NET ! Sets domain-name
ip name-server 198.6.1.1 ! DNS server router uses
ip name-server 198.6.1.2 ! Secondary DNS server router uses
snmp-server community 6f270ca640 RO ! SNMP community string
snmp-server trap-authentication
!
10-03-2008 12:12 PM
Hello Matt,
for the specific type of serial interfaces you have you need to configure some layer1 parameters.
so on each serial you need to add the following commands:
service-module t1 timeslots 1-24 ! Sets timeslots (channels of T1)
service-module t1 framing esf ! Sets T1 Framing
service-module t1 linecode b8zs ! Sets T1 Linecode
service-module t1 clock line
see
http://www.cisco.com/en/US/docs/ios/interface/configuration/guide/ir_dsu_rtrs.html#wp1025039
However, as Edison has correctly noted the multilink FR bundle will work only if configured on both sides yours and the router on the other side.
So check if Verizon has given you just a second T1 or actually they are ready for multilink FR FRF.16 bundle
Hope to help
Giuseppe
10-03-2008 12:51 PM
I have confirmed that this circuit is configured for bonding on Verizon's end. Below is the config that I have, but I am not sure where the MLPPP comes into place.
interface MFR1
mtu 4470
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay IETF
no ip route-cache cef
no ip mroute-cache
load-interval 30
no arp frame-relay
frame-relay multilink bid to gw
frame-relay lmi-type ansi
!
interface MFR1.500 point-to-point
ip address x.x.x.x 255.255.255.252
no ip redirects
no ip proxy-arp
no cdp enable
no arp frame-relay
!
!
interface Serial0/0/0
mtu 4470
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay MFR1
load-interval 30
service-module t1 timeslots 1-24
service-module t1 framing esf
service-module t1 linecode b8zs
frame-relay lmi-type ansi
no fair-queue
no arp frame-relay
!
interface Serial0/1/0
mtu 4470
bandwidth 1536
no ip address
no ip redirects
no ip proxy-arp
encapsulation frame-relay MFR1
load-interval 30
service-module t1 timeslots 1-24
service-module t1 framing esf
service-module t1 linecode b8zs
frame-relay lmi-type ansi
no fair-queue
no arp frame-relay
10-03-2008 01:03 PM
Hello Matt,
MLPPP is a different matter and here you have FRF.16 multilink FR.
I see you still have the arp frame-rel disabled I had suggested to enable it in previous post in another thread this was the problem and the collegue had the same symptom : everything looks like well but no traffic flows
so enable it on all interfaces
int serx/y
arp frame-rel
int mfr1
arp frame-rel
int mfr1.500
arp frame-rel
Why you should need it: the bundle has its own signaling that need to be able to flow on the links
see
see section link integrity protocol control messages
By the way in the config examples in the document the arp frame-rel is not disabled and the default should be to be enabled
if Verizon did a MLPPP bundle a similar but different configuration is needed
Hope to help
Giuseppe
10-03-2008 03:00 PM
They can't configure MLPPP in their end while you are running the non-MLPPP way.
Any time I've have migrated configurations from non-MLPPP to MLPPP, we have to schedule with the ISP so they can change their configuration at the same time I'm changing my side.
You really need to talk to your provider to get this going. MLPPP needs the directly attached routers to be talking the same protocol, else it won't work.
HTH,
__
Edison.
10-01-2008 02:11 PM
One thing to keep in mind, for bonding, both sides need to be configured for MLPPP.
You need to work w/ your provider so they can configure their internet routers. The provider internet router must be the same holding both T1s, else this configuration won't work.
HTH,
__
Edison.
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