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Community Member

Cisco 2951 with SM-ES3G-24 - Need Help !!!!

Hi All,

We have recently purchased a Cisco 2951 + SM-ES3G-24 module. Bit confused when tried to configure it. Much appreciate if  some one can explain following points ?

 

(1). Is GigabitEthernet 1/0 & 1/1 are Virtual ports or Switch module internally connected via these ports ?

GigaEther1/0  |  Gigaeth0/25 ( switch Port )

GigaEther1/0  |  Gigaeth0/26 ( switch Port )

 

(2) Is Port Channeling possible with Giga1/0 & Giga1/1 ?

I have noticed that EtherChannel is possible with Giga1/0 but not with Giga1/1

 

12 REPLIES
Community Member

Any Help ????

Any Help ????

Silver

Could you post whole output

Could you post whole output of command "show ip int brie"?

I think that this module with 24Gig ports is acting as regular L2/L3 switch inside your router chassis...but for answering your question I first need to see how ports are numbered.

BR,

Dragan

HTH, Dragan
Community Member

RouterRouter>show ip int

Router

Router>show ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
Embedded-Service-Engine0/0 unassigned      YES unset  administratively down down
GigabitEthernet0/0         unassigned      YES unset  administratively down down
GigabitEthernet0/1         unassigned      YES unset  administratively down down
GigabitEthernet0/2         unassigned      YES unset  administratively down down
GigabitEthernet1/0         unassigned      YES unset  administratively down down
GigabitEthernet1/1         unassigned      YES unset  up                    up
Vlan1                      unassigned      YES unset  up                    up

 

Switch

Switch>show ip int brief
Interface              IP-Address      OK? Method Status                Protocol
Vlan1                  10.10.10.2      YES manual up                    up
GigabitEthernet0/1     unassigned      YES unset  down                  down
GigabitEthernet0/2     unassigned      YES unset  down                  down
GigabitEthernet0/3     unassigned      YES unset  down                  down
GigabitEthernet0/4     unassigned      YES unset  down                  down
GigabitEthernet0/5     unassigned      YES unset  down                  down
GigabitEthernet0/6     unassigned      YES unset  down                  down
GigabitEthernet0/7     unassigned      YES unset  down                  down
GigabitEthernet0/8     unassigned      YES unset  down                  down
GigabitEthernet0/9     unassigned      YES unset  down                  down
GigabitEthernet0/10    unassigned      YES unset  down                  down
GigabitEthernet0/11    unassigned      YES unset  down                  down
GigabitEthernet0/12    unassigned      YES unset  down                  down
GigabitEthernet0/13    unassigned      YES unset  down                  down
GigabitEthernet0/14    unassigned      YES unset  down                  down
GigabitEthernet0/15    unassigned      YES unset  down                  down
GigabitEthernet0/16    unassigned      YES unset  down                  down
GigabitEthernet0/17    unassigned      YES unset  down                  down
GigabitEthernet0/18    unassigned      YES unset  down                  down
GigabitEthernet0/19    unassigned      YES unset  down                  down
GigabitEthernet0/20    unassigned      YES unset  down                  down
GigabitEthernet0/21    unassigned      YES unset  down                  down
GigabitEthernet0/22    unassigned      YES unset  down                  down
GigabitEthernet0/23    unassigned      YES unset  down                  down
GigabitEthernet0/24    unassigned      YES unset  down                  down
GigabitEthernet0/25    unassigned      YES unset  up                    up
GigabitEthernet0/26    unassigned      YES unset  up                    up

 

Silver

You must connect to your

You must connect to your internal switch module throw internal port which in your case is Gig1/1 I think...so purpose of that port is pure internal and it gives you connection to your switch as it is with regular out of router switches.

Concerning your Gi1/0 port I'm not sure what is it for...

Basically with Gig 1/1 you connect to your switch internally so don't use that port for anything else. When you are on switch ports you can configure them for portchanneling regulary.

BTW you can use integrated ports on router chassis for configuring L3 portchannel also...just for your info.

And I think that following link would be very helpfull:

http://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/software/feature/guide/eesm_sw.html#wp1919696

BR,

Dragan

HTH, Dragan
Community Member

Thanks Llic,I followed same

Thanks Llic,

I followed same document you have shared. Even in that document they use the Gigabit1/0 to open a session to Switch. So I didn't found where to use Gigabit 1/1.

 

If I consider the Architecture behind this ... seems like SM-ES3G-24 modules is connected to Cisco 2951 via one gigabit port ( Giga 1/0 or Giga 1/1 ) is it ?????

Why can't I configure port-channeling with this module ?? is it because they have already done that internally ???

Silver

You can configure PC with

You can configure PC with that module - connect on switch and try with your Gig0/x ports - it should work.

I don't think that there is some internally PC with gig 1/0 and 1/1. Could you give output of "sh run int gi 1/0" and "sh run int gi 1/1" and also "sh int gi 1/0" and 1/1?

Just to see what are HW options for that 2 ports...

BR,

Dragan

HTH, Dragan
Community Member

Router#show run int gi1

Router#show run int gi1/0
Building configuration...

Current configuration : 73 bytes
!
interface GigabitEthernet1/0
 ip address 10.10.10.1 255.255.255.0
end

 

Router#show run int gi1/1
Building configuration...

Current configuration : 118 bytes
!
interface GigabitEthernet1/1
 description Internal switch interface connected to Service Module
 no ip address
end

 

Router#show int gi1/0
GigabitEthernet1/0 is up, line protocol is up
  Hardware is PSE2, address is 6412.25c3.4ca8 (bia 6412.25c3.4ca8)
  Internet address is 10.10.10.1/24
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full Duplex, 1Gbps, media type is internal
  output flow-control is XON, input flow-control is XON
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:06, output 00:00:06, 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
     1395 packets input, 202920 bytes, 0 no buffer
     Received 829 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     123 packets output, 40992 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     132 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out


Router#show int gi1/1
GigabitEthernet1/1 is up, line protocol is up
  Hardware is EE Internal Service Module, address is 0000.0000.0009 (bia 0000.0000.0009)
  Description: Internal switch interface connected to Service Module
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:15, 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: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     3058 packets input, 324486 bytes, 0 no buffer
     Received 2 broadcasts (1398 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     8656 packets output, 649274 bytes, 0 underruns
     0 output errors, 0 collisions, 2 interface resets
     552 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

 

Silver

Give me "show inventory"

Give me "show inventory" output?

It seems that your internal port to switch is gi 1/1...

BR,

Dragan

HTH, Dragan
Community Member

Router#show inventoryNAME:

Router#show inventory
NAME: "CISCO2951/K9", DESCR: "CISCO2951/K9 chassis, Hw Serial#: , Hw Revision: 1.1"
PID: CISCO2951/K9      , VID: V06 , SN:

NAME: "SM-ES3G-24-P: EtherSwitch SM L3 + POE + 24 10/100/1000 on Slot 1", DESCR: "SM-ES3G-24-P: EtherSwitch SM L3 + POE + 24 10/100/1000"
PID: SM-ES3G-24-P      , VID: V02 , SN:

NAME: "C2921/C2951 DC Power Supply", DESCR: "C2921/C2951 DC Power Supply"
PID: PWR-2921-51-DC    , VID: V01 , SN:

 

Silver

Well I can only assume that

Well I can only assume that your Gig 1/1 is for internal communication with switch module and that Gi1/0 is also internal interface to router MGF (multi-gigabit fabric) used for intermodule communication without burdening router CPUs. 

Anyway - use switch module ports (Gig0/x) for Port channeling and it must work...

BR,

Dragan

HTH, Dragan
Community Member

Thanks for the info llic ,

Thanks for the info llic ,

 

Could you please guide me to configure this module with vlans ??

Silver

Here you can find examples of

Here you can find examples of doing that:

http://www.cisco.com/c/en/us/support/docs/interfaces-modules/network-modules/82288-es-mod-config.html

It's pretty similar like on regular catalyst switches...

BR,

Dragan

HTH, Dragan
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