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how to tell if IP Sourse Routing is enabled on MSFC

We're running MSFC with the IOS ver 12.1(13)E6 inside the Cat-6505. The IP Source Routing is not explicitly disabled in the config. I have not been able to determine if Cisco has enabled it by the default. Is there a way to tell whether or not the IP Sourse Routing is enabled on these MSFC's?

Thanks.

_ Alex

4 REPLIES
Community Member

Re: how to tell if IP Sourse Routing is enabled on MSFC

Alex,

By IP source routing I assume you mean can will the device route packets for networks that it knows about. If that is the question then the answer is that IP routing is enabled by default on the MSFC. You can determine this by issuing the command "show ip route". If the MSFC returns something like this:

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area

* - candidate default, U - per-user static route, o - ODR

P - periodic downloaded static route

Gateway of last resort is not set

C 127.0.0.0/8 is directly connected, EOBC0/0

That is an indication that ip routing is enabled. If it looks like this:

Router#sh ip route

Default gateway is not set

Host Gateway Last Use Total Uses Interface

ICMP redirect cache is empty

That is an indication that IP routing has been disabled.

If this is not what you are looking for then let me know and we'll try again.

Community Member

Re: how to tell if IP Sourse Routing is enabled on MSFC

Steve,

Thanks for your response. Our default gateway is in fact set. However, I would still like to disable the IP source routing for security reasons. I just wanted to make sure it was enabled by default.

_ Alex

Community Member

Re: how to tell if IP Sourse Routing is enabled on MSFC

I suggest you to disable this feature, it will written explicitly in the config.

mpls-t#sh run | inc source-rout

no ip source-route

Hope this helps

Philippe~~

Community Member

Re: how to tell if IP Sourse Routing is enabled on MSFC

Phil, thanks for your response. Why do you suggest to disable the IP source routing?

_ Alex

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