Hi Jonathan
Thank you for your help, I did not know about cisco router term type
limitations
I will try to find how to set up term type in guacamole .

Thanks!
Amartya Thorat

On Tue, Apr 5, 2022 at 9:07 PM Hankins, Jonathan <
[email protected]> wrote:

> Doubt this is helpful, but I looked at your Cisco-Device-Log file where it
> complains about various term types. What happens if you set the term type
> to vt100 in the guacamole connection settings?
>
>
> https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k-r7-0/system-security/configuration/guide/b-system-security-cg-asr9000-70x/b-system-security-cg-asr9000-70x_chapter_01001.html
>
> Use of a terminal type other than vt100 is unsupported, and the software
>> generates a warning message in this case.
>
>
> On Fri, Apr 1, 2022 at 1:34 AM Amartya Thorat <
> [email protected]> wrote:
>
>> Hi All
>> I am facing same issue for CISCO-IOS XR  DEVICE
>> Can we get more help on this
>>
>> Attaching device ssh logs
>>
>>
>> Thanks !
>> Amartya Thorat
>>
>>
>> On 2021/04/06 13:08:32 Yaroslav Nikonorov wrote:
>> > Hi There,
>> > When connect to Cisco-IOS-XRv-9000 by ssh guacd failed with "Unable to
>> > allocate PTY" error.
>> > As it is critical for us, I played around and found that guacd failed
>> on PTY
>> > request "libssh2_channel_request_pty()".
>> > After some debugging on guacd and libssh2 I found that request is sent
>> > successfully, but it failed on receiving specific packet type.
>> > I created the below patch for  guacd, added warning instead of
>> > "guac_client_abort()" and it worked.
>> >
>> > Currently we are using custom builds, but it would be great to add the
>> fix
>> > to the code base to avoid such cases.
>> > Can you help me with the solution?
>> > Thanks.
>> >
>> >
>> > From d5c0e7aa4c38db04d0bf7adb817ca9f392c7f619 Mon Sep 17 00:00:00 2001
>> > From: Yaroslav <[email protected]>
>> > Date: Fri, 2 Apr 2021 07:05:20 +0000
>> > Subject: [PATCH] Continue execution if PTY request failed
>> >
>> > ---
>> >  src/protocols/ssh/ssh.c | 3 +--
>> >  1 file changed, 1 insertion(+), 2 deletions(-)
>> >
>> > diff --git a/src/protocols/ssh/ssh.c b/src/protocols/ssh/ssh.c
>> > index 81fb0855..e7f9eeb0 100644
>> > --- a/src/protocols/ssh/ssh.c
>> > +++ b/src/protocols/ssh/ssh.c
>> > @@ -368,8 +368,7 @@ void* ssh_client_thread(void* data) {
>> >              settings->terminal_type, strlen(settings->terminal_type),
>> >              ssh_ttymodes, ttymodeBytes, ssh_client->term->term_width,
>> >              ssh_client->term->term_height, 0, 0)) {
>> > -        guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR,
>> > "Unable to allocate PTY.");
>> > -        return NULL;
>> > +        guac_client_log(client, GUAC_LOG_WARNING, "Unable to allocate
>> > PTY.");
>> >      }
>> >
>> >      /* Forward specified locale */
>> > --
>> > 2.20.1
>> >
>> >
>> >
>> > --
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>> http://apache-guacamole-general-user-mailing-list.2363388.n4.nabble.com/
>> >
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>
>
> --
> Jonathan Hankins
>
> Homewood City Schools
>
> W: 205-877-4548
>
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