How to change port speed on a 1750

[quickconnect]

One of our sites had upgraded the frame relay circuit from 1.5m to 2m connected to a serial interface. How can I change the port speed so that the router can now handle the new speed or is this done automatically?

I run Solar Winds and when I look at the interface stats it still show 1.54mbps for that interface..

 

[leedsit]

High,

Have a look at your serial interface and look for a Clock-speed or Bandwidth command... I admit Im not really sure, however you can bet if its set manualy it will be there.

LEEroy
MCNE6,CCNA2,CWNA, Project+, CCSA

 

[quickconnect]

Currently there no click speed or banddwidth speed seetings on that interface. I think and correct me if im wrong but isint the bandwidth command only for a reference point and actually has no effect??

Also can this be a possibility that the serial interface on that router only support up to 1.54bmps ??

 

[doublea1535]

Quickconnect,

Try to run the command "clock rate ?" under that serial interface, that should provide some clues as to what speed it will support. I believe that the majority of sync. serial support up to 2MBs to support E1s. Also "show controller serial x" might help too (note the space between the type and the number).

You are correct that the bandwidth command is only for reference, it doesn't affect how the Layer 1-2 operates.

But to answer your original question, your router is most likely a DTE, which receives clocking from the DCE (the provider), in which case yes, the speed will be adjusted automatically. Run a "show controller serial x | i V.35" and see if it says DCE or DTE to be sure.

HTH!

- Aaron

 

[quickconnect]

Here are my results from clock rate commnad but not sure how to tell what it support?

BNARTR01(config-if)#clock rate ?
Speed (bits per second)
1200
2400
4800
9600
14400
19200
28800
32000
38400
56000
57600
64000
72000
115200
125000
128000
148000
192000
250000
256000
384000
500000
512000
768000
800000
1000000
1300000
2000000
4000000
8000000
<300-8000000> Choose clockrate from list above


Here is the show controllers serial 0 command

BNARTR01#show controllers serial 0
Interface Serial0
Hardware is PowerQUICC MPC860
DTE V.35 TX and RX clocks detected.
idb at 0x81B2F550, driver data structure at 0x81B0EEFC
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]=0x00000800
Mask [CIMR]=0x40204000, In-srv [CISR]=0x00000000
Command register [CR]=0x600
Port A [PADIR]=0x0000, [PAPAR]=0x0F0F
[PAODR]=0x0000, [PADAT]=0xFDFF
Port B [PBDIR]=0x0380F, [PBPAR]=0x0E00E
[PBODR]=0x00000, [PBDAT]=0x0047C
Port C [PCDIR]=0x000, [PCPAR]=0x000
[PCSO]=0x0E0, [PCDAT]=0xF1C, [PCINT]=0x000
Receive Ring
rmd(FF002430): status 9000 length 66 address 2774C64
rmd(FF002438): status 9000 length 66 address 27752E4
rmd(FF002440): status 9000 length AE address 276F164
rmd(FF002448): status 9000 length 20E address 2775964
rmd(FF002450): status 9000 length 4E address 2775964
rmd(FF002458): status 9000 length 96 address 276C3E4
rmd(FF002460): status 9000 length 1FE address 2774C64
rmd(FF002468): status 9000 length 7E address 27704E4
rmd(FF002470): status 9000 length 20E address 27752E4
rmd(FF002478): status 9000 length 96 address 276F164
rmd(FF002480): status 9000 length 76 address 2775964
rmd(FF002488): status 9000 length 20E address 2773F64
rmd(FF002490): status 9000 length 96 address 276D0E4
rmd(FF002498): status 9000 length 1FE address 276A364
rmd(FF0024A0): status 9000 length 7E address 27738E4
rmd(FF0024A8): status B000 length 20E address 2772BE4
Transmit Ring
tmd(FF0024B0): status 5C00 length 8C address 2630298
tmd(FF0024B8): status 5C00 length AC address 27BBC98
tmd(FF0024C0): status 5C00 length 3D address 27B8F74
tmd(FF0024C8): status 5C00 length A4 address 262E998
tmd(FF0024D0): status 5C00 length AC address 262FC58
tmd(FF0024D8): status 5C00 length 144 address 262F938
tmd(FF0024E0): status 5C00 length AC address 262E678
tmd(FF0024E8): status 5C00 length A4 address 27BA9D8
tmd(FF0024F0): status 5C00 length D4 address 262F938
tmd(FF0024F8): status 5C00 length 3D address 262C0D4
tmd(FF002500): status 5C00 length 3D address 262D754
tmd(FF002508): status 5C00 length 3D address 27B9974
tmd(FF002510): status 5C00 length AC address 262E038
tmd(FF002518): status 5C00 length A4 address 27BBC98
tmd(FF002520): status 5C00 length AC address 2630BF8
tmd(FF002528): status 7C00 length DC address 27BA6B8

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]=0x2470
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]=56568
User-defined Address 0000/0000/0000/0000
User-defined Address Mask 0x0000


buffer size 1524

PowerQUICC SCC specific errors:
727 input aborts on receiving flag sequence
0 throttles, 0 enables
0 overruns
0 transmitter underruns
0 transmitter CTS losts

Here is the show controller serial 0 | i V.35 command
BNARTR01#show controller serial 0 | i V.35
DTE V.35 TX and RX clocks detected.


How can I tell if the interface is an E1 or T1 serial card and what speeds it can support?

 

[jneiberger]

Your serial interface probably supports up to E1 speeds. Did you upgrade from a fractional E1 to a full E1? What sort of external CSU/DSU do you use? Have you made the necessary changes to it to handle the new speed?

Also, the speed you see reported in Solarwinds is nothing more than the default value of the "bandwidth" parameter on the interface. It has no bearing whatsoever on the actual clock rate of the link. It is up to you to set the bandwidth parameter to match your actual bandwidth. I'm not sure how you get Solarwinds to poll the device again and pull the new parameters, though.

 

[quickconnect]

That is my question HOW to get my interface to accect the new 2bmps speed? look at notes above

Thanks

 

[jneiberger]

I'm trying to get more information from you in order to answer your question. If you don't provide us with the relevant information, we can't help.

1. Is this an E1 circuit?
2. Did you upgrade from a fractional E1 to a full E1?
3. What sort of CSU/DSU do you have?
3. Have you made any changes to its config?

 

[quickconnect]

Sorry I will try and provide you with this info

 

[plshlpme]

**likely** your isp has upgraded your CSU to clock off the full E1 and your router will now automotaically accept the full E1 speed.

if you want for reference you can enter the bandwidth 2048 command on the interface...

do you have a class map attached to your subinterface that specifies the speeds for the frame-relay link?

youll need to make sure you have changed any traffic shaping and polices to reflect the new speed.

 

[quickconnect]

here is my serial 0 and sub-interface setting from "show run"

interface Serial0
description ***WAN***
no ip address
encapsulation frame-relay IETF
no ip route-cache
no ip mroute-cache
frame-relay lmi-type ansi
!
interface Serial0.1 point-to-point
ip address x.x.x.x 255.255.255.248
ip access-group 110 in
no ip route-cache same-interface
no ip route-cache
no ip mroute-cache
no cdp enable
frame-relay interface-dlci 100
crypto map XXXXXX

Do I need to change anything?

 

[jneiberger]

No, you do not need to change anything on your router except perpahs the "bandwidth" command if you'd like it to reflect the actual speed of the circuit.

 

[quickconnect]

Here is the class maps but nothing that would effect the speed.

interface Serial0
description ***WAN***
bandwidth 2048
no ip address
encapsulation frame-relay IETF
no ip route-cache
no ip mroute-cache
frame-relay lmi-type ansi
!
interface Serial0.1 point-to-point
ip address x.x.x.x 255.255.255.248
ip access-group 110 in
no ip route-cache same-interface
no ip route-cache
no ip mroute-cache
no cdp enable
frame-relay interface-dlci 100
crypto map xxxxxx
!
ip local pool XX_VPN_ippool x.x.x.x x.x.x.x
ip local pool XX_VPN_ippool2 x.x.x.x x.x.x.x
ip nat inside source route-map nonat interface Serial0.1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0.1
ip route 0.0.0.0 0.0.0.0 10.201.1.21 100
ip route x.x.x.x 255.255.0.0 x.x.x.x
ip route x.x.x.x 255.255.0.0 x.x.x.x
ip tacacs source-interface FastEthernet0
no ip http server
no ip http secure-server

 

[quickconnect]

Thanks for all the help everyone.