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New Member

bad mask on 2600 router for secondary IP address

I am trying to add a secondary IP address on the ethernet interface of a 2600 route, IP subnet-zero is configured.

the error is as follows

ajs_internet_gw#

ajs_internet_gw#config t

Enter configuration commands, one per line. End with CNTL/Z.

ajs_internet_gw(config)#interface Ethernet0/0

ajs_internet_gw(config-if)#ip address 65.37.108.72 255.255.255.248 secondary

Bad mask /29 for address 65.37.108.72

ajs_internet_gw(config-if)#exit

this subnet was given to me by my ISP, as I need a bigger block of address ... I need to set up a secondary range while I configure a replacement Firewall....

3 REPLIES
New Member

Re: bad mask on 2600 router for secondary IP address

65.37.108.72/29 is the subnet ip. try configuring 65.37.108.73/29

New Member

Re: bad mask on 2600 router for secondary IP address

Is that not what I have done

"ip address 65.37.108.72 255.255.255.248 secondary"

is the syntax wrong?

New Member

Re: bad mask on 2600 router for secondary IP address

Misread your response.. thanks for the info..

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