How I can change size of Ethernet frame at cisco 871 ?
I have channel (point to point) from my ISP.
Topology of this channel is "Bridge".
This schema doesn't work :
cisco871 <- ADSL modem -> ISP <-- ADSL modem --> cisco 871
But this schema work propertly:
cisco2611xm <- ADSL modem -> ISP <-- ADSL modem --> winodws2003(routing on)<--> cisco 871
My ISP said me: "Your cisco871 have outgoing Ethernet-frame more 1508 and ISP reject its. "
I don't understand why cisco2611xm work propertly so cisco871 doesn't when i use ISP's "Bridge".
I'm can't change MTU at FastEthernet inetface:
pervomay(config)#interface fastEthernet 4
<64-17940> MTU size in bytes
% Interface FastEthernet4 does not support user settable mtu.