[dhcp] Allow for links that remained blocked for up to three minutes

With the default timeouts for Cisco MAC Authentication Bypass, the
link will remain blocked for around 90 seconds (plus a likely
subsequent delay for STP).

Extend the maximum number of DHCP discovery deferrals to allow for up
to three minutes of waiting for a link to become unblocked.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/config/dhcp.h b/src/config/dhcp.h
index bff5b56d63c1cd00930ff178d18eb49208d3283b..adfa74a153f5183a4d05b3c2731e7cbce5463bf0 100644 (file)
--- a/src/config/dhcp.h
+++ b/src/config/dhcp.h
@@ -28,7 +28,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  * Maximum number of discovery deferrals due to blocked links
  * (e.g. from non-forwarding STP ports)
  */
-#define DHCP_DISC_MAX_DEFERRALS                60
+#define DHCP_DISC_MAX_DEFERRALS                180
 
 /*
  * ProxyDHCP offers are given precedence by continue to wait for them