Slow Telnet response

Unanswered Question
Mar 2nd, 2008

I am facing problems while telneting to a remote router which is on a P2P link. Ping response the router is perfectly fine, but the telnet response is absolutely slow. Can any one comment on why this can happen???

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fahad.sheikh Sun, 03/02/2008 - 23:17

No!

Here is the config on one end


interface Serial5/6


ip address

no ip redirects

no ip unreachables

no ip proxy-arp

ip tcp header-compression iphc-format

ip tcp compression-connections 256

no ip mroute-cache

load-interval 30

no fair-queue

serial restart-delay 0

no dce-terminal-timing-enable

ip rtp header-compression iphc-format

ip rtp compression-connections 1000

end

dongdongliu Mon, 03/03/2008 - 00:37

hi,


i think telnet traffic has been compressed and decompressed.

btw:make sure there are the same CONNECTION NUMBER behind ip tcp compression-connections in local router`s serial interface.


regards

dongdong



aravindhs Mon, 03/03/2008 - 02:56

Also, have you got service nagle enabled or disabled on the routers ?


How is your show ip tcp header-compression looking ?


arav

fahad.sheikh Mon, 03/03/2008 - 19:32

Hi Aravind,


Here is the out put for the command and also I have attached the config for other end.


Router A


Interface Serial5/6 (compression on, IPHC)

Rcvd: 21929 total, 17614 compressed, 0 errors, 6499 status msgs

0 dropped, 0 buffer copies, 0 buffer failures

Sent: 25141 total, 17859 compressed, 0 status msgs, 0 not predicted

596635 bytes saved, 456031 bytes sent

2.30 efficiency improvement factor

Connect: 256 rx slots, 256 tx slots,

2553 misses, 55 collisions, 0 negative cache hits, 256 free contexts

89% hit ratio, five minute miss rate 0 misses/sec, 0 max




Router B


interface Serial2/0

no ip redirects

no ip unreachables

no ip proxy-arp

ip tcp header-compression iphc-format

ip tcp compression-connections 256

no ip mroute-cache

load-interval 30

no fair-queue

timeslot 1-31

crc4

no cdp enable

ip rtp header-compression iphc-format

ip rtp compression-connections 1000

end


TCP/IP header compression statistics:

Interface Serial2/0:

Rcvd: 24316 total, 18933 compressed, 4867 errors

14066 dropped, 0 buffer copies, 0 buffer failures

Sent: 17495 total, 13978 compressed,

486904 bytes saved, 2399219 bytes sent

1.20 efficiency improvement factor

Connect: 256 rx slots, 256 tx slots,

220 long searches, 133 misses 0 collisions

99% hit ratio, five minute miss rate 0 misses/sec, 0 max

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