Etherswitch modules configuration questions

1) what is the difference between HWIC-4ESW and Etherswitch modules.

HWIC-4ESM cards are high speed wan interface cards.  its basically a layer 2 switch with provisions for POE. ES modules are like switches inside a router slot, THE ES modules are insallted in the NM slots. We can acccess these ES modules and we can do ios upgrade also separately. This is not possible with the HWIC cards.

When we have HWIC cards installed in the router, the ports will be shown in the sh ip int brief as fastethernet ports in the router.

But when we have ES modules, the port which is  internally connecting to ES  module will be shown in the show ip int brief . like gig 4/0 or gig 2/0 depending  on the slot its installed. We have to configure a ip address for the gig port and log into the ES module using the command

“service-module gig 4/0 session ”

Once we are in the service module   either you can configure an ip address to the internal port connecting from the switch to the router, or we can configure the ip address for the vlan. by default the port connecting to the router is in the vlan 1 .

then for the internal communication we should have the ip route statement on both the ES and the router .
show inv:
NAME: “NME-XD-48ES-2S-P: EtherSwitch SM 48 10/100T PoE + 2 SFP on Slot 4”, DESCR: “NME-XD-48ES-2S-P: EtherSwitch SM 48 10/100T PoE + 2 SFP”

router#sh ip int brief
Interface                  IP-Address      OK? Method Status                Protocol

GigabitEthernet4/0        YES manual up                    up

router#service-module gigabitEthernet 4/0 session

this will log you into the service module.

ESW-module#GigabitEthernet1/0/4   unassigned      YES unset  up                    up

gig 1/0/4 port is the interface connect to the router via the backplance

either we can give an ip address to this gig1/0/4 or put an ip address to the vlan 1 . by default this port is in vlan 1
ESW-module(config)#interface  vlan  1

ESW-module(config-if)#ip address

ESW-module(config)#ip route is the gig 4/0 ip address on the router through which the packets go out the router.

create anotther vlan for the internal communication for the hosts
ESW-module(config)#interface  vlan  20

ESW-module(config-if)#ip address

also create a route in the router for reaching the vlan 20 in the ES module. this is reachable via which is the vlan 1 ip address in the switch


router(config)#ip route


About mangattu

Networking Engineer
This entry was posted in switching. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s