3750 - vlan route-map's

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Mar 7th, 2008
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I have a switch stack of 3750's running IPServices 12.2(25)SEE4. I was wanting to implement a route-map to direct certain addresses with in a VLAN to be routed to another default route. Though when I apply the command on the vlan interface, it does not take. Any reason why? Am I missing? the following are the commands I am using


Thanks in advance


~Jeff


Config t

Access-list 20 permit 172.16.12.20

Route-map word permit 10

Match ip address 20

Set ip default next-hop 172.16.2.5

int vlan 12

ip policy route-map word


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Jason Fraioli Fri, 03/07/2008 - 16:13
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I assume you can ping 172.16.2.5 from a host in vlan 12? Do you have any vacls in place that might be blocking traffic from vlan 12 to 172.16.2.5?

Jeff Thompson Fri, 03/07/2008 - 16:18
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thanks for your reply. No vacls any where else, and yes I can ping from the 12 to 172.16.12.5 It is weird, when I apply the policy to int vlan 12, and do a show run int vlan 12, the command does not appear.


I have looked over some unsupported commands for this version of IOS, and from I can see, only route-map commands that set to a prefix-list appear to be unsupported.


Any other thoughts?

Jeff Thompson Mon, 03/10/2008 - 06:25
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Thanks Sundar - I went to apply this command to our switch stack this morning and the option for 'routing-pbr' was not listed. I could issue 'sdm prefer routing' Though I am looking for pbr functionality. Any thoughts as to why that command was not listed. Could it be a IOS version?


Thanks,


~Jeff

Edison Ortiz Mon, 03/10/2008 - 19:30
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The link provided by Sundar was for an old IOS version. You are running 12.2(25) and the software supports IPv4 PBR only when the dual-ipv4-and-ipv6 routing template is configured.


http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_25_see/configuration/guide/swsdm.html



HTH,


__


Edison.

Jeff Thompson Mon, 03/10/2008 - 20:16
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Thanks for the reply Edison. After looking at the link you posted it would appear that by running the command 'sdm prefer routing desktop' I would obtain 512k for pbr ace's.


this is what is currently configured:


Switch# show sdm prefer

The current template is "desktop default" template.

The selected template optimizes the resources in

the switch to support this level of features for

8 routed interfaces and 1024 VLANs.

number of unicast mac addresses: 6K

number of igmp groups + multicast routes: 1K

number of unicast routes: 8K

number of directly connected hosts: 6K

number of indirect routes: 2K

number of policy based routing aces: 0

number of qos aces: 512

number of security aces: 1K



and this is with the command stated above:


Switch# show sdm prefer routing

"desktop routing" template:

The selected template optimizes the resources in

the switch to support this level of features for

8 routed interfaces and 1024 VLANs.

number of unicast mac addresses: 3K

number of igmp groups + multicast routes: 1K

number of unicast routes: 11K

number of directly connected hosts: 3K

number of indirect routes: 8K

number of policy based routing aces: 512

number of qos aces: 512

number of security aces: 1K




Am I reading that correctly?

Edison Ortiz Tue, 03/11/2008 - 07:13
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Just change the SDM from desktop default to routing and the router will have the PBR features you need. You must reboot for the changes to take effect.


Good luck


__


Edison.

Jeff Thompson Tue, 03/11/2008 - 07:53
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Thanks - yes I made the change by applying 'sdm prefer routing desktop' and I now have pbr functionality.


Thanks to everyone for the help


gandrath.nithin Mon, 08/16/2010 - 01:07
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i too face the same kind of issue , might be the IOS doesnt support .


Rgds,

Nithin Gandrath

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