Configuring two 1751 w/serial int

[FlyboyLDB]

I am attempting to connect two 1751 routers w/serial interfaces via t1 line. Router "A" (host side) is identical to router "B" remote side. I want to keep them on the same subnet for simplicity purposes. I have performed this feat with csu/dsu modules in the past, but never with serial interfaces. Host side has an internet gateway seperate from the router itself - which the remote side will need access to also. For the life of me I cannot figure out what I am doing wrong. This is the configuration from router "A", router "B's" configuration is identical except for the BVI 1 IP address is x.x.x.22 instead of x.x.x.21. I cannot ping router "B" from router "A" or vice versa. Router "B" BVI 1 goes down - states "No Active Members" - that inturn takes down int fe0/0. Any help is greatly appreciated.

Using 876 out of 29688 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname Cisco1
!
enable password 7 1404071B1C0B383F75
!
memory-size iomem 25
ip subnet-zero
no ip domain lookup
!
!
!
bridge irb
!
!
interface FastEthernet0/0
description connected to EthernetLAN_1
no ip address
no keepalive
speed auto
bridge-group 1
!
interface Serial0/0
description connected to CiscoB
ip unnumbered FastEthernet0/0
bridge-group 1
!
interface BVI1
ip address 192.168.0.21 255.255.255.0
!
router rip
version 2
network 192.168.0.0
no auto-summary
!
ip classless
no ip http server
!
!
snmp-server community public RO
snmp-server enable traps tty
bridge 1 protocol ieee
!
line con 0
exec-timeout 0 0
password 7 111A0C15071D1918
login
line aux 0
line vty 0 4
password 7 095F5B19090A0506
login
!
no scheduler allocate
end

 

[jeter]

Given this is a point to point T1 all you need to do is give your serial interfaces an ip say something like this

routerA Ser0/0 ip address 192.168.1.1 255.255.255.252
no shut
routerB Ser0/0 ip address 192.168.1.2 255.255.255.252
no shut
routerB router eigrp 1 network 192.168.1.0 VLSM
routerB ip default-gateway to your internet ip address


remove the bridge on both routers
copy running-config startup-config ( WR MEM )

buid uo your ethernet ip and add a network address EIGRP
Make sure one router is external clocking and the other internal.

“Reserve your right to think, for even to think wrongly is better than not to think at all”

Fisher CCNA, Network+

 

[fmonteiro]

I believe you are missing the following statements:

bridge irb
bridge 1 route ip

 

[FlyboyLDB]

I'll take a look and let you know the outcome. Thanks for the help thus far! Greatly appreciated!

 

[FlyboyLDB]

fmonteiro you were correct that I was missing this line. I have inserted it. I have corrected most of my bugs, But I keep getting int s0/0 up - line protocol down. Any idea on how to correct? Here is an up to date configuration. Thanks to all.

Router config:
Using 891 out of 29688 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname CiscoA
!
enable password 7 1404071B1C0B383F75
!
memory-size iomem 25
ip subnet-zero
no ip domain lookup
!
!
!
bridge irb
!
!
interface FastEthernet0/0
description connected to EthernetLAN_1
no ip address
no keepalive
speed auto
bridge-group 1
!
interface Serial0/0
description connected to CiscoB
ip unnumbered FastEthernet0/0
encapsulation ppp
bridge-group 1
!
interface BVI1
ip address 192.168.0.21 255.255.255.0
!
router rip
version 2
network 192.168.0.0
no auto-summary
!
ip classless
no ip http server
!
!
snmp-server community public RO
snmp-server enable traps tty
bridge 1 protocol ieee
bridge 1 route ip
!
line con 0
exec-timeout 0 0
password 7 111A0C15071D1918
login
line aux 0
line vty 0 4
password 7 095F5B19090A0506
login
!
end
*********************************************
sh controller:
Interface FastEthernet0/0
Hardware is PQUICC MPC860P ADDR: 80C91310, FASTSEND: 80011BA4
DIST ROUTE ENABLED: 0
Route Cache Flag: 1
ADDR_LOW =0x000B466B, ADDR_HIGH =0x00003BF0, HASH_HIGH =0x04000100, HASH_LOW =0x04200000
R_DES_ST =0x01917720, X_DES_ST =0x01917960, R_BUFF_SIZ=0x00000600, ECNTRL =0xF0000006
IEVENT =0x00000000, IMASK =0x0A000000, IVEC =0xC0000000, R_DES_ACT=0x01000000
X_DES_ACT=0x00000000, MII_DATA =0x50821000, MII_SPEED =0x00000014, R_BOUND =0x00000600
R_FSTART =0x00000500, X_FSTART =0x00000440, FUN_CODE =0x7F000000, R_CNTRL =0x0000000C
R_HASH =0xEF0005F2
X_CNTRL =0x00000004
HW filtering information:
Promiscuous Mode Enabled
Software MAC address filter(hash:length/addr/mask/hits):
pquicc_fec_instance=0x80C93070
rx ring entries=64, tx ring entries=32
rxring=0x1917720, rxr shadow=0x80C93264, rx_head=30, rx_tail=0
txring=0x1917960, txr shadow=0x80C93390, tx_head=19, tx_tail=19, tx_count=0

RX_RING_ENTRIES
status 8000, len 40, buf_ptr 1917AE0
status 8000, len F7, buf_ptr 1918140
status 8000, len 40, buf_ptr 19187A0
status 8000, len 60, buf_ptr 1918E00
status 8000, len 68, buf_ptr 1919460
status 8000, len 60, buf_ptr 1919AC0
status 8000, len 68, buf_ptr 191A120
status 8000, len 60, buf_ptr 191A780
status 8000, len 68, buf_ptr 191ADE0
status 8000, len F2, buf_ptr 191B440
status 8000, len FA, buf_ptr 191BAA0
status 8000, len 40, buf_ptr 191C100
status 8000, len 40, buf_ptr 191C760
status 8000, len F7, buf_ptr 191CDC0
status 8000, len F7, buf_ptr 191D420
status 8000, len 40, buf_ptr 191DA80
status 8000, len 40, buf_ptr 191E0E0
status 8000, len F7, buf_ptr 191E740
status 8000, len 40, buf_ptr 191EDA0
status 8000, len 40, buf_ptr 191F400
status 8000, len 40, buf_ptr 191FA60
status 8000, len 40, buf_ptr 19200C0
status 8000, len F7, buf_ptr 1920720
status 8000, len 40, buf_ptr 1920D80
status 8000, len F7, buf_ptr 19213E0
status 8000, len 40, buf_ptr 1921A40
status 8000, len 40, buf_ptr 19220A0
status 8000, len 40, buf_ptr 1922700
status 8000, len 40, buf_ptr 1922D60
status 8000, len F7, buf_ptr 19233C0
status 8000, len 0, buf_ptr 1855E20
status 8000, len 0, buf_ptr 18557A0
status 8000, len 0, buf_ptr 1855120
status 8000, len 0, buf_ptr 1854AA0
status 8000, len 0, buf_ptr 1854420
status 8000, len 0, buf_ptr 1853DA0
status 8000, len 0, buf_ptr 1853720
status 8000, len 0, buf_ptr 18530A0
status 8000, len 0, buf_ptr 1852A20
status 8000, len 0, buf_ptr 18523A0
status 8000, len 0, buf_ptr 1851D20
status 8000, len 0, buf_ptr 18516A0
status 8000, len 0, buf_ptr 1851020
status 8000, len 0, buf_ptr 18509A0
status 8000, len 0, buf_ptr 1850320
status 8000, len 0, buf_ptr 184FCA0
status 8000, len 0, buf_ptr 184F620
status 8000, len 0, buf_ptr 184EFA0
status 8000, len 0, buf_ptr 184E920
status 8000, len 0, buf_ptr 184E2A0
status 8000, len 0, buf_ptr 184DC20
status 8000, len 0, buf_ptr 184D5A0
status 8000, len 0, buf_ptr 184CF20
status 8000, len 0, buf_ptr 184C8A0
status 8000, len 0, buf_ptr 184C220
status 8000, len 0, buf_ptr 184BBA0
status 8000, len 0, buf_ptr 184B520
status 8000, len 0, buf_ptr 184AEA0
status 8000, len 0, buf_ptr 184A820
status 8000, len 0, buf_ptr 184A1A0
status 8000, len 0, buf_ptr 1849B20
status 8000, len 0, buf_ptr 18494A0
status 8000, len 0, buf_ptr 1848E20
status A000, len 0, buf_ptr 18487A0

TX_RING_ENTRIES
status 0, len 3C, buf_ptr 1800E87
status 0, len 3C, buf_ptr 1801107
status 0, len 3C, buf_ptr 1801387
status 0, len 3C, buf_ptr 1801747
status 0, len 3C, buf_ptr 1801887
status 0, len 3C, buf_ptr 18019C7
status 0, len 3C, buf_ptr 1801C47
status 0, len 3C, buf_ptr 1801EC7
status 0, len 3C, buf_ptr 19717C7
status 0, len 3C, buf_ptr 1971A47
status 0, len 3C, buf_ptr 1971CC7
status 0, len 3C, buf_ptr 1971F47
status 0, len 3C, buf_ptr 19721C7
status 0, len 3C, buf_ptr 1972587
status 0, len 3C, buf_ptr 1972807
status 0, len 3C, buf_ptr 1972D07
status 0, len 3C, buf_ptr 18014C7
status 0, len 3C, buf_ptr 1800207
status 0, len 3C, buf_ptr 1800347
status 0, len 3C, buf_ptr 18005C7
status 0, len 169, buf_ptr 1806562
status 0, len 3C, buf_ptr 1800487
status 0, len 3C, buf_ptr 1800707
status 0, len 3C, buf_ptr 1800847
status 0, len 3C, buf_ptr 1800FC7
status 0, len 3C, buf_ptr 1800E87
status 0, len 3C, buf_ptr 1801107
status 0, len 3C, buf_ptr 1800487
status 0, len 3C, buf_ptr 1800987
status 0, len 3C, buf_ptr 1800C07
status 0, len 3C, buf_ptr 1800D47
status 2000, len 3C, buf_ptr 1800FC7
throttled=0, enabled=0, disabled=0
rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0
rx_no_enp=0, rx_discard=0
tx_one_col_err=0, tx_more_col_err=0, tx_no_enp=0, tx_deferred_err=0
tx_underrun_err=0, tx_late_collision_err=0, tx_loss_carrier_err=1
tx_exc_collision_err=0, tx_buff_err=0, fatal_tx_err=0
PHY registers:
Register 00 1000
Register 01 782D
Register 02 7810
Register 03 0003
Register 04 01E1
Register 05 45E1
Register 06 0001
Register 16 0000
Register 17 0000
Register 18 4000
Register 19 0000
Register 20 38C8


Interface Serial0/0
Hardware is PowerQUICC MPC860
DTE V.35 TX and RX clocks detected.
idb at 0x80CAB1C0, driver data structure at 0x80CB2CCC
SCC Registers:
General [GSMR]=0x2:0x00000030, Protocol-specific [PSMR]=0x8
Events [SCCE]=0x0000, Mask [SCCM]=0x001F, Status [SCCS]=0x06
Transmit on Demand [TODR]=0x0, Data Sync [DSR]=0x7E7E
Interrupt Registers:
Config [CICR]=0x00365F80, Pending [CIPR]=0x84008000
Mask [CIMR]=0x40204000, In-srv [CISR]=0x00000000
Command register [CR]=0x600
Port A [PADIR]=0x0000, [PAPAR]=0x0903
[PAODR]=0x0000, [PADAT]=0xFFFF
Port B [PBDIR]=0x0180F, [PBPAR]=0x0E00E
[PBODR]=0x00000, [PBDAT]=0x3077C
Port C [PCDIR]=0x000, [PCPAR]=0x000
[PCSO]=0x020, [PCDAT]=0xFCC, [PCINT]=0x000
Receive Ring
rmd(FF002430): status 9000 length F address 1967144
rmd(FF002438): status 9000 length 10 address 1965744
rmd(FF002440): status 9000 length F address 19677C4
rmd(FF002448): status 9000 length F address 1966444
rmd(FF002450): status 9000 length F address 19643C4
rmd(FF002458): status 9000 length F address 1964A44
rmd(FF002460): status 9000 length 60C address 1965DC4
rmd(FF002468): status 9000 length 60C address 1966AC4
rmd(FF002470): status 9000 length 60C address 1864AE4
rmd(FF002478): status 9000 length 60C address 1864464
rmd(FF002480): status 9000 length 60C address 1863DE4
rmd(FF002488): status 9000 length 60C address 1863764
rmd(FF002490): status 9000 length 60C address 18630E4
rmd(FF002498): status 9000 length 60C address 1862A64
rmd(FF0024A0): status 9000 length 60C address 18623E4
rmd(FF0024A8): status B000 length 60C address 1861D64
Transmit Ring
tmd(FF0024B0): status 0 length E address 0
tmd(FF0024B8): status 0 length E address 0
tmd(FF0024C0): status 0 length E address 0
tmd(FF0024C8): status 0 length E address 0
tmd(FF0024D0): status 0 length E address 0
tmd(FF0024D8): status 0 length E address 0
tmd(FF0024E0): status 0 length E address 0
tmd(FF0024E8): status 0 length E address 0
tmd(FF0024F0): status 0 length E address 0
tmd(FF0024F8): status 0 length E address 0
tmd(FF002500): status 0 length 0 address 0
tmd(FF002508): status 0 length 0 address 0
tmd(FF002510): status 0 length 0 address 0
tmd(FF002518): status 0 length 0 address 0
tmd(FF002520): status 0 length 0 address 0
tmd(FF002528): status 2000 length 0 address 0

tx_limited=1(2)

SCC GENERAL PARAMETER RAM (at 0xFF003C00)
Rx BD Base [RBASE]=0x2430, Fn Code [RFCR]=0x18
Tx BD Base [TBASE]=0x24B0, Fn Code [TFCR]=0x18
Max Rx Buff Len [MRBLR]=1548
Rx State [RSTATE]=0x18008440, BD Ptr [RBPTR]=0x2460
Tx State [TSTATE]=0x18000548, BD Ptr [TBPTR]=0x24B8

SCC HDLC PARAMETER RAM (at 0xFF003C38)
CRC Preset [C_PRES]=0xFFFF, Mask [C_MASK]=0xF0B8
Errors: CRC [CRCEC]=0, Aborts [ABTSC]=0, Discards [DISFC]=0
Nonmatch Addr Cntr [NMARC]=0
Retry Count [RETRC]=0
Max Frame Length [MFLR]=1608
Rx Int Threshold [RFTHR]=0, Frame Cnt [RFCNT]=65530
User-defined Address 0000/0000/0000/0000
User-defined Address Mask 0x0000


buffer size 1524

PowerQUICC SCC specific errors:
0 input aborts on receiving flag sequence
0 throttles, 0 enables
0 overruns
0 transmitter underruns
0 transmitter CTS losts
******************************************
show Interface serial0/0
Serial0/0 is up, line protocol is down
Hardware is PowerQUICC Serial
Description: connected to CiscoB
Interface is unnumbered. Using address of FastEthernet0/0 (0.0.0.0)
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, loopback not set
LCP REQsent
Closed: BRIDGECP, IPCP, CCP, CDPCP, LLC2, BACP
Last input 00:00:06, output 00:00:01, output hang never
Last clearing of "show interface" counters 00:06:53
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1158 kilobits/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
62 packets input, 813 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
2 input errors, 0 CRC, 2 frame, 0 overrun, 0 ignored, 0 abort
85 packets output, 1190 bytes, 0 underruns
0 output errors, 0 collisions, 7 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
*************************************************************
sh int fastethernet0/0
FastEthernet0/0 is up, line protocol is up
Hardware is PQUICC_FEC, address is 000b.466b.3bf0 (bia 000b.466b.3bf0)
Description: connected to EthernetLAN_1
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue :0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
153 packets input, 16757 bytes
Received 75 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
353 packets output, 24787 bytes, 0 underruns
1 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
1 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
********************************************************
sh interface bvi 1
BVI1 is up, line protocol is up
Hardware is BVI, address is 000b.466b.3bf0 (bia 0000.0000.0000)
Internet address is 192.168.0.21/24
MTU 1500 bytes, BW 1544 Kbit, DLY 5000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue :0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
4 packets output, 246 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
***************************************
show protocol serial0/0
Serial0/0 is up, line protocol is down
Interface is unnumbered. Using address of FastEthernet0/0 (0.0.0.0)
CiscoA#>

 

[gconnect]

although i have not worked heavily with BVI interfaces, here's a thought......

have you tried to see what will happen if you let the serial and ethernet interfaces use the IP address of the BVI interface?

 

[FlyboyLDB]

Under the int s0/0 and int fe0/0 just do a ip unnumbered bvi 1? Can you have two interfaces port unnumbered? I'll give it a shot - I see what you are talking about. If any others have an idea, I am open. Still getting int s0/0 up - line protocol down. Take a look at the earlier posted config and see what you think. Thanks

 

[fmonteiro]

I am also concerned about your IP addressing. I would suggest assigning an IP address to the FastEthernet interface and supressing the "ip unnumbered" from the serial interface, which will assume the BVI address.

But this will not solve our "protocol down" problem, which means that we are not receiving keepalive packets. Do you have a provider for the T1 link? Could you check with then if everything is fine with your circuit? Is the circuit really enabled?

 

[FlyboyLDB]

I agree that I may have to assign IP to ethernet. I have the telecom checking on the line - Two seperate telecoms involved - one for each side - which always complicates matters. I will keep you posted. Thanks for all you advise.