I have the same issue on 1811 (12.4(15)T7) w/PPPoE to an ADSL Bridge modem. From the Cisco router itself, even pinging the Dialer IP is "very" slow i.e 105 ms. I "pinged extended" the router IP loopback from IP source "inside" interface and it's okay (1 ms). I tried disabled CEF and Inspect on Dialer interface, just in case, and still the same problem when pinging the Dialer IP i.e 105ms. Any idea?
Well, going over our 2 config's - they're almost 100% identical.
I've played with the MTU settings, and even gone as low as 800, but nothing seems to affect it.
Here is the config, and some output commands:
Here are the router specs:
Cisco 1841 (revision 7.0) with 354304K/38912K bytes of memory
Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
no ip address
pppoe enable group global
pppoe-client dial-pool-number 1
no cdp enable
ip address negotiated
ip mtu 1452
ip nat outside
ip tcp adjust-mss 1452
no ip mroute-cache
dialer pool 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname -----
ppp chap password -----
ppp pap sent-username ----- password -----
ppp ipcp route default
The solution that I've had to use as of current - is the have the original ISPs craptastic equipment in place, and drop the cisco router into a DMZ of their equipment.
Doing it that way allows me to get the speed up to par with what it should be, and also use most/all of the features that the Cisco router gives me (VPN, etc.)
Unfortunately - it's very sad that my very expensive Cisco Router and very expensive Cisco modules - can't do the basic things that a $20 over-the-counter router can do. (cough* train itself on vpi/vci etc. cough*)
And thus, a using a combination of the two (Cisco Router and ISPs) is pretty much mandatory at this point in the game.
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