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Multilink PPP-Packet loss?

rephil
Level 1
Level 1

Hi All,

I have set up multilink PPP between our primary office and a branch office. The links are private line T-1's. I have just brought this on line and when testing across the links i am getting some dropped packets. I have pasted the config below. I would be grateful for any help.

ROUTER-1

interface Loopback0

ip address 10.1.105.1 255.255.255.0

!

interface Ethernet0/0

ip address 10.1.1.12 255.255.255.0

half-duplex

!

interface Serial0/0

no ip address

encapsulation ppp

dialer in-band

dialer rotary-group 1

dialer-group 1

pulse-time 1

no fair-queue

!

interface Serial0/1

no ip address

encapsulation ppp

dialer in-band

dialer rotary-group 1

dialer-group 1

pulse-time 1

no fair-queue

!

interface Dialer1

ip unnumbered Loopback0

encapsulation ppp

dialer in-band

dialer idle-timeout 300

dialer map ip 10.1.105.2 name Ranch-ICE broadcast

dialer load-threshold 2 either

dialer-group 1

no fair-queue

ppp authentication chap

ppp direction callout

ppp multilink

!

no ip http server

ip classless

ip route 0.0.0.0 0.0.0.0 10.1.1.5

ip route 10.1.105.2 255.255.255.255 Dialer1

ip route 10.2.25.0 255.255.255.0 10.1.105.2

ROUTER-2

interface Loopback0

ip address 10.1.105.2 255.255.255.0

!

interface FastEthernet0/0

ip address 10.2.25.1 255.255.255.0

speed 100

full-duplex

!

interface Serial0/0

no ip address

encapsulation ppp

no ip mroute-cache

dialer in-band

dialer rotary-group 1

dialer-group 1

pulse-time 1

no fair-queue

!

interface FastEthernet0/1

no ip address

shutdown

duplex auto

speed auto

!

interface Serial0/1

no ip address

encapsulation ppp

dialer in-band

dialer rotary-group 1

dialer-group 1

pulse-time 1

no fair-queue

!

interface Dialer1

ip unnumbered Loopback0

encapsulation ppp

dialer in-band

dialer idle-timeout 300

dialer map ip 10.1.105.1 name ICE-Ranch broadcast

dialer load-threshold 2 either

dialer-group 1

no fair-queue

ppp authentication chap

ppp direction callin

ppp multilink

!

ip http server

ip classless

ip route 0.0.0.0 0.0.0.0 10.1.105.1

ip route 10.1.105.1 255.255.255.255 Dialer1

#sh ppp multilink

Virtual-Access1, bundle name is Ranch-ICE

Bundle up for 03:42:05, 1/255 load

Receive buffer limit 24384 bytes, frag timeout 1000 ms

Dialer interface is Dialer1

0/0 fragments/bytes in reassembly list

1234 lost fragments, 3030 reordered

413/543272 discarded fragments/bytes, 0 lost received

0xCBAC received sequence, 0x1341A sent sequence

Member links: 2 (max not set, min not set)

Se0/0, since 03:42:05

Se0/1, since 00:45:30

1 Reply 1

ebreniz
Level 6
Level 6

1. Physical problems with

a. Cabling (patch panels, wall jacks)

b. Line (Telco issue)

2. A Defective WIC

These issues can be solved by doing a hardware loopback test , the issuing extended ping , for details of test check out the following link

http://www.cisco.com/warp/customer/471/hard_loopback.html