WAN Config Blank on 857w

Question:

My client has an 857w, WS-C3750X-24S-S  but although the site for the SDM express loads, the Internet WAN page always shows as blank.  We need access to this to alter the ISP.

On IOS 12.4(6)T5

Telnet access appears to work and shows the details.  

Answer:

your WAN IP is learned dynamically with PPP:

interface Dialer0

description $FW_OUTSIDE$

ip address negotiated

Just change the credentials, they should be given by new ISP and also check this( ask ISP):

interface ATM0.1 point-to-point

description $ES_WAN$$FW_OUTSIDE$

no snmp trap link-status

pvc 0/38

  encapsulation aal5mux ppp dialer

  dialer pool-member 1

For SDM, what is your Java version, try to downgrade it and see if it works.

For more info, WS-C3750X-48P-L Price http://www.3anetwork.com/cisco-ws-c3750x-48p-l-price_p118.html

QoS (dscp-to-exp mutation) on Sup-2T/Cat6500

Question:

 just a quick question WS-C3560X-48T-L  in regards to the crypto certificate keys. I notice on our DMVPN routers, a large hexadecimal key shows up.

For example:

                 

crypto pki certificate chain TP-self-signed-708137789

certificate self-signed 01

  3082024D 308201B6 A0030201 02020101 300D0609 2A864886 F70D0101 04050030

  30312E30 2C060355 04031325 494F532D 53656C66 2D536967 6E65642D 43657274

  69666963 6174652D 37303831 33373738 39301E17 0D313231 31313331 39323230

  375A170D 32303031 30313030 30303030 5A303031 2E302C06 03550403 1325494F

  532D5365 6C662D53 69676E65 642D4365 72746966 69636174 652D3730 38313337

  37383930 819F300D 06092A86 4886F70D 01010105 0003818D 00308189 02818100

  B6C79947 3412D002 025566ABF2C7A830 .................

Answer:

The self signed certificate may be associated with DMVPN but it can also be associated with other things. For example, if you configure ip http secure-server it will cause a self signed certificate to be generated.

For more WS-C3560X-48T-S Price news about Price ans Specification, you can click here.http://www.3anetwork.com/cisco-ws-c3560x-48t-s-price_p47.html

Reset a Router -- Start Over?

Question:

How do I reset WS-C3750X-24S-S a Cisco 876 ISR? I seem to remember from class it was easier than the option to change a register value that I've found through research. Can I just delete the startup.cfg and it will then try to run me through the wizard the next time I boot?

I've got a problem where the Dialer interface is hooked to a FastEthernet interface as it's WAN link. This was because I misconfigured with the pppoe-client command. But now I don't know how to back out of the problem I made for myself. Just negating the commands on the Fa3 interface doesn't seem to work. I need to hook the dialer it to the ATM interface instead.

Answer:

How do I reset a Cisco 876 ISR?

Check the back of the unit.  There should be a "Reset" button.

1.  Power down the router;

2.  Hold down the "Reset" button;

3.  Power up the router  WS-C3750X-48P-L Price

For more Cisco WS-C3750X-24S-S   news about Price ans Specification, you can click here http://www.3anetwork.com/cisco-ws-c3750x-24s-s-price_p112.html

serial inteface shows down/down

Question:

>>serial WS-C3560X-48T-L interface up/down

we have private line. serial inteface shows down/down. private line terminates to csu/dsu and than goes to our router. what could be the issue?

serial interface down/down

I checked status yesterday evening and it was showing down/down. what could be the issue? would there be connectivity issue between router and csu/dsu?

Answer:

The link layer is down. Here's a couple of things to check. First replace the cable between the CSU/DSU and the router. Check that the CSU/DSU is functional, try replacing it if you have a spare. Check the smartjack from the carrier and check that there are no red or WS-C3560X-48T-S Price amber lights. Let us know how that goes.

For more WS-C3560X-48T-L news about Price ans Specification, you can click here.

http://www.3anetwork.com/cisco-ws-c3560x-48t-l-price_p46.html

Tunnel MTU

Question:

I have a Router WS-C3750X-24S-S  running 12.4

I have configured ip mtu 1300 but when I show int it says 1500 ??

Anyone aware of any bugs?

Answer:

Can you check the output of sh ip int tunnel x instead of sh int tunnel?

Does it shows correct or 1500??

If not showing correct, Can you post the output of below:

Sh run int tunnel x

And sh run int for physical interface sourcing the tunnel.

Also sh ip int tunnel x WS-C3750X-48P-L Price

CCIE BGP PRACTICE LAB

Question:

I am preparing for my WS-C3560X-48P-S ccie certification exam. and i am currently practicing bgp. I have a few questions regarding the bgp lab ( http://www.ibrahimhasan.com/content/lab-32-0 ). On task#4, is there any way that you could filter route advertisment outside of local AS without using prefix-lists or any type of filters?

Secondly, in http://ibrahim.drupalgardens.com/content/lab-31-0 task#3 is "network 150.1.1.0 mask 255.255.255.0 route-map SET-COMMUNITY" correct? or are there any way you could send a community string without using a route-map?

Answer:

studying theory is needed to be able to understand the requirements

A)

>> Ensure that these prefixes are NEVER advertised out of AS 254

calls for BGP well known community NO-EXPORT to be set on these routes

B)

your understanding is correct the use of a route-map invoked in the network command looks like the only available option given the constraints

>> you are NOT allowed to use outbound or inbound route-maps when completing this task WS-C3560V2-24PS-S Price

CCIE HELP

Question:

I am recently certified CCNP R & S. WS-C3560V2-48PS-S   My skills and experience lie in this area... Switching, OSPF, EIGRP BGP etc

I would like to progress on to the CCIE R & S but have had very little exposure to QOS and MPLS, VPN's Frame Relay, ATM etc - basically anything not in the CCNP R & S Syllabus.

What would you advise is the best way for me to proceed?  Should I jump straight into CCIE and try and cover these topics with reading / labs whilst going through an INE log book or is there a better route for me to take? E.g Try and do CCNP Service Provide studying first.  I have all my foundation CCNP R & S topics up to date and dont really want to take a break from studying...

Any advice would be appreciated, I am currently eployed as a 2nd line Cisco engineer.

Answer:

Gonna give my two cents:if you've got the CCNP RS  then no need to do CCNP SP before  doing CCIE RS.

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