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Community Member

how we check if csu is internal to router or not

Hi all

on router

cisco CISCO7606 (R7000) processor (revision 1.0) with 227328K/34816K bytes of memory.

Processor board ID FOX0838006Q

R7000 CPU at 300Mhz, Implementation 0x27, Rev 3.3, 256KB L2, 1024KB L3 Cache

Last reset from power-on

X.25 software, Version 3.0.0.

Bridging software.

Primary Rate ISDN software, Version 1.1.

2 FlexWAN controllers (2 Serial)(16 T1)(1 ATM).

1 Virtual Ethernet/IEEE 802.3 interface(s)

48 FastEthernet/IEEE 802.3 interface(s)

4 Gigabit Ethernet/IEEE 802.3 interface(s)

18 Serial network interface(s)

1 ATM network interface(s)

381K bytes of non-volatile configuration memory.

whic has these interfaces

oktulwanr1#sh ip int brief

Interface IP-Address OK? Method Status Protocol

Vlan1 unassigned YES NVRAM administratively down down

GigabitEthernet1/1 192.168.253.242 YES manual up up

GigabitEthernet1/2 unassigned YES NVRAM administratively down down

GigabitEthernet2/1 unassigned YES NVRAM administratively down down

GigabitEthernet2/2 192.168.253.250 YES manual up up

Serial3/0/0 172.22.3.1 YES manual up up

Serial3/0/1 unassigned YES unset administratively down down

Serial3/1/0:0 172.28.255.1 YES NVRAM up up

Serial3/1/1:0 10.13.253.1 YES manual up up

Serial3/1/2:0 unassigned YES NVRAM up up

Serial3/1/2:0.1 172.26.249.1 YES NVRAM administratively down down

Serial3/1/2:0.2 172.26.249.5 YES NVRAM administratively down down

Serial3/1/2:0.3 172.26.103.205 YES NVRAM up up

Serial3/1/2:0.4 unassigned YES unset administratively down down

Serial3/1/2:0.5 unassigned YES manual administratively down down

Serial3/1/2:0.6 172.26.100.33 YES NVRAM administratively down down

Serial3/1/2:0.7 172.26.18.9 YES NVRAM up up

Serial3/1/2:0.8 172.26.18.5 YES NVRAM up up

Serial3/1/3:0 172.26.16.145 YES manual up up

Serial3/1/4:0 172.26.16.133 YES manual up up

Serial3/1/5:0 172.26.150.253 YES NVRAM up up

Serial3/1/6:0 172.22.40.253 YES NVRAM up up

Serial3/1/7:0 unassigned YES manual administratively down down

Serial4/0/0:0 unassigned YES manual up up

Serial4/0/1:0 unassigned YES manual up up

Serial4/0/2:0 unassigned YES manual administratively down down

Serial4/0/3:0 172.22.4.1 YES NVRAM up up

Serial4/0/4:0 unassigned YES NVRAM up up

Serial4/0/5:0 unassigned YES manual up up

Serial4/0/6:0 unassigned YES manual up up

Serial4/0/7:0 unassigned YES manual up up

ATM4/1/0 unassigned YES NVRAM administratively down down

FastEthernet5/1.1 172.16.100.1 YES NVRAM administratively down down

FastEthernet5/2 unassigned YES TFTP administratively down down

FastEthernet5/3 192.168.9.177 YES NVRAM administratively down down

FastEthernet5/4 unassigned YES NVRAM administratively down down

FastEthernet5/5

i have two questions

1>how we can tell if csu is internal or

external to router

2>what does serial3/1/0:0 mean

my understanding is module 3 wic card 1

slot 00 or 0?

samething for Serial3/1/2:0.5

many thanks

mahesh

3 REPLIES
Hall of Fame Super Silver

Re: how we check if csu is internal to router or not

Hello Mahesh,

your C7600 has two port adapters with 8T1 each.

if you look in the configuration you will find section about

controller t1 ser4/0/x

channel-group 0 unframed

each interface

ser3/1/y:0 and ser4/0/x:0 are derived from the t1 controllers

a Cisco 7600 can support these PAs that have been introduced for C7500 and C7200 using special linecards named flexwan see this line

2 FlexWAN controllers (2 Serial)(16 T1)(1 ATM).

from your sh ver

these PAs have RJ-45 female ports and should have internal CSU.

Serial3/1/2:0.5 is a subinterface of serial ser3/1/2:0 that is derived from controller t1 3/1/2.

Hope to help

Giuseppe

Community Member

Re: how we check if csu is internal to router or not

Hi

thanks for reply

from sh run i have

controller T1 4/0/0

framing esf

clock source internal

linecode b8zs

channel-group 0 timeslots 1-24

how do u came to know that these are

these PAs have RJ-45 female ports

many thanks

mahesh

Community Member

Re: how we check if csu is internal to router or not

Also this 16 T1 lines on 2 serial

modules. right?

what does this mean-

Serial3/1/2:0.5 is a subinterface of serial ser3/1/2:0 that is derived from controller t1 3/1/2.

my understanding is that ser3/1/2:0 is physical interface and Serial3/1/2:0.5

is logical interface right?

i did not understand this line

that is derived from controller t1 3/1/2.

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